Tilton-on-the-Hill Fossil Hunting

1879 – Railway exposes the succession
Opening of the railway through the Tilton area created the cutting and helped expose the fossiliferous Lias sequence. The geology subsequently became accessible to systematic description; later neighbouring ironstone workings are separate sites.

1889 – Wilson and Crick document the section and fauna
E. Wilson and W. D. Crick published a detailed cutting section and a substantial Marlstone fossil appendix. They explained that much of the collection came from Tilton rock reused in the East Norton embankment, an important limit on its bed-by-bed provenance.

1893 – The cutting enters the Survey synthesis
H. B. Woodward included a description of Tilton in the Geological Survey’s Jurassic synthesis, extending the published record beyond the first detailed faunal paper.

1903 – District memoir develops the local account
C. Fox-Strangways described Tilton’s Lias succession and nearby exposures in the district memoir. Some of the thicker lower beds were recorded in a stream outside the principal entrance face, a distinction needed when comparing historical sections.

1913–1914 – Tilton material enters ammonite nomenclature
S. S. Buckman introduced Tiltoniceras and published the type material of Tiltoniceras costatum. The type specimens are labelled Tilton, without the precise cutting provenance given for some later museum vouchers. Their nomenclatural history is important, but it should not be converted into a more exact collecting locality than the labels establish.

1952 – Ironstone study compares cutting and district
Whitehead and colleagues included Tilton cutting in their ironstone assessment. Their sandstone-based interpretation of some lower hard beds became part of the later debate over where to place the Dyrham–Marlstone boundary.

1954 – A distinctive brachiopod is described
D. V. Ager described Gibbirhynchia tiltonensis, highlighting the palaeontological distinctiveness of the Tilton Marlstone fauna. The name is a taxonomic milestone, not a label to apply to every ribbed brachiopod at the site.

1955 – Hallam establishes detailed beds and shell bands
A. Hallam divided the section into numbered beds and studied its fossil assemblages, including the conspicuous brachiopod concentrations. His scheme remains important, although later formation boundaries do not coincide with all his original lithological divisions.

1956 – Tilton’s palaeogeographical significance is developed
Ager discussed the distinctive brachiopod assemblage in palaeogeographical terms and proposed a Tilton faunal subprovince. This describes a pattern of fossil distribution, not a separate formation or member in the rock succession.

1962 – Shell clusters are interpreted as living assemblages
Hallam’s analysis of articulated brachiopod clusters developed the interpretation of quieter seabeds interrupted by stronger currents. The contrast between complete clusters and fragmented shells made preservation an essential part of the environmental interpretation.

1965 – The railway closes
The railway line closed, leaving the cutting as an abandoned exposure that later became a nature reserve managed for its geology and wildlife. This closure date concerns the railway, not the separate ironstone quarries.

1967 – Boundary beds receive renewed analysis
Hallam’s work on Pliensbachian–Toarcian boundary beds drew on Tilton as part of a wider investigation. The cutting’s upper ironstone and overlying mudstones continued to test interpretations of faunal and sedimentary change.

1968 – Facies and historical bed scheme are reassessed
Hallam’s revised account examined the Marlstone’s sedimentary character and lateral variations. Its bed numbering remains a reference point for subsequent ammonite and microfossil studies.

1972–1979 – Museum workers record the Whitby Mudstone
Jones and Mathieson and later Leicestershire Museums work documented the thin mudstones and limestones above the Marlstone. Their numbered intervals provide a basis for correlating fossil horizons in later composite accounts.

1974 – Microfossils add a different view of the section
Lord investigated the cutting’s microfauna, including a small, poorly preserved ostracod assemblage from the unit historically called Tilton Sandrock. These studies supplemented the better-known shells and ammonites.

1980 – The upper Marlstone is shown to be Toarcian
M. K. Howarth used ammonites to demonstrate that the upper Marlstone extends into the Toarcian. He also interpreted the so-called Transition Bed as a weathered top rather than necessarily a separate bed, changing how the boundary succession was understood.

1981–1983 – The cutting receives statutory protection
Tilton Cutting was notified as a Site of Special Scientific Interest in 1981 and under the later legislation in 1983. The designation recognises its key Marlstone and boundary succession and its important fossil assemblages.

1986 – Clements adds detailed field records
R. G. Clements recorded further detail in the Whitby Mudstone succession. The RGC numbers used in the later Survey table preserve that fieldwork alongside the museum numbering, including the thin insect- and crustacean-bearing limestone lenses.

1987 – Upper Dyrham beds are investigated
Blake studied the lower part of the exposed succession and its fossils. Beds then described as sandstone were later reclassified in the Survey synthesis as sandy, ferruginous shell-detrital limestone.

1991 – Black-shale interpretation uses Tilton evidence
P. B. Wignall used observations from Tilton’s Whitby Mudstone in a model for transgressive black-shale deposition. The interpretation concerns particular mudstone intervals and does not mean that every bed at the site formed without oxygen.

1992 – Ammonite revision revisits the boundary material
Howarth’s monograph on hildoceratid ammonites brought further taxonomic and stratigraphic treatment to the boundary faunas, including material discussed from Tilton. Later authors have continued to disagree over some Tiltoniceras name relationships.

1998 – Ooids and mudstone minerals are analysed
Chatwin’s work examined the geochemistry and mineralogy of the Whitby Mudstone material. Its largely phosphatic ooids are distinct from the berthierine-rich ooids of the Marlstone, an important difference between superficially similar granular rocks.

1999 – Tilton becomes the national Marlstone type section
The formal Marlstone Rock Formation framework designated Tilton railway cutting as its national type section. This established the cutting as a reference for defining and comparing the formation.

2001 – Microfaunas and palynology refine the age evidence
I. P. Wilkinson’s calcareous microfossil work and J. B. Riding’s palynological work supplied independent age constraints. Their evidence helped distinguish Pliensbachian lower Marlstone beds from the Toarcian upper part while preserving uncertainty over the exact boundary position.

2006 – A field account revisits the exposed succession
K. Ambrose’s field account explained the Dyrham, Marlstone and Whitby succession and gave a stage-boundary interpretation for the Marlstone. Its estimate is one published constraint rather than a replacement for all earlier measurements.

2009 – Survey synthesis publishes the modern measured framework
The Leicester district synthesis brought together lithology, historical logs, ammonites, microfaunas and palynology. Its separate Dyrham, Marlstone and Whitby tables retain the detailed beds needed to understand the cutting beyond a simple ironstone summary.

Scope and numbering
The principal entrance section is at SK 7616 0555, within the railway cutting. The following measured intervals follow the 2009 Survey account and are described upwards, from older to younger beds. They are historical measurements, not a promise that all beds are currently visible. RGC numbers and the museum numbers in brackets belong to distinct published recording schemes; neither should be confused with Hallam’s older bed numbers.

LIAS GROUP

Dyrham Formation

Upper Dyrham fossils and environment
Ammonites recorded from the upper Dyrham include Amaltheus margaritatus and Amaltheus subnodosus. Microfaunal records include Lingulina tenera subsp. A, Dentalina matutina and Lenticulina muensteri acutiangulata; the higher Lenticulina record suggests biozone JF11, and their combined age evidence allows the succeeding gibbosus interval to be thin or absent. Abundant Botryococcus occurs with marine palynomorphs, suggesting terrestrial or freshwater input to a marine setting rather than a wholly freshwater deposit.

Lower exposed siltstone, more than 0.2 m
Grey, micaceous siltstone contains abundant shell detritus towards its top. The “more than” thickness records the exposed part only, rather than a complete bed or formation thickness.

Sandy ferruginous limestone, 0.4 m
Fine-grained grey limestone is sandy and iron-bearing, with shells and shell debris particularly concentrated towards its base. It passes down into the siltstone beneath. This is the hard layer reclassified from older sandstone or Sandrock descriptions.

Upper laminated siltstone, 1.15 m
Grey, muddy, micaceous siltstone shows good lamination and ochreous mottling. It is the highest of the three measured Dyrham intervals beneath the Marlstone.

Marlstone Rock Formation

Lithology and historical nomenclature
The modern Marlstone includes Hallam’s beds 2–8; his bed 1 is Dyrham and bed 9 Whitby Mudstone. Its lower hard beds are sandy ferruginous limestone and iron grainstone, not simply a separate sandstone formation. Fresh berthierine ooids, siderite cement and calcite weather to brown iron-rich material. Reworked Amaltheus near the base cannot, by itself, give the depositional age of the enclosing rock.

Basal fine limestone, 0.10 m
Grey fine-grained limestone contains a few intraformational pebbles and shell debris concentrated low in the bed. Faint lamination fines upwards. The upper surface is strongly irregular, eroded and burrowed; younger sediment fills the relief and burrows, some of which have a discontinuous siderite rim.

Pebbly ooidal limestone, 0.15 m
This grey limestone weathers ochreous and is fine- to medium-grained, ooidal and shell-detrital. Scattered pebbles of older sediment reach 4 cm across, and the base is strongly irregular on the underlying limestone.

Lower sandy iron grainstone, 0.35–0.45 m
Fine-grained, ochreous iron grainstone contains shell debris, ooids and sand. Its variable thickness is retained rather than reduced to a single nominal value.

Lower brachiopod limestone, 0.2–0.3 m
A grey fine-grained limestone is crowded with brachiopod shells. It lies below the better-known Band A, so the separate shell concentrations should not be merged into one thick shell bed.

Iron grainstone beneath Band A, 0.7 m
Another fine-grained, ochreous, sandy and ooidal iron grainstone separates the lower shell bed from Band A. Broken shells contribute to its sediment.

Brachiopod Band A, 0.2 m
Grey fine-grained limestone is packed with Tetrarhynchia tetrahedra and Lobothyris punctata. The distinction between whole, articulated shell clusters and broken-shell accumulations is important to the interpretation of quieter living assemblages versus transported material.

Iron grainstone between Bands A and B, 1.55 m
This is a substantial interval of fine-grained, ochreous, sandy and ooidal iron grainstone with shell detritus. It separates the two named brachiopod bands rather than forming part of either shell concentration.

Brachiopod Band B, 0.15 m
A brachiopod-rich layer lies within fine-grained sandy ooidal iron grainstone. The published lists include Tetrarhynchia tetrahedra, Lobothyris punctata and Zeilleria subdigona. The Survey table’s name Gibbithyris northamptonensis differs from the GCR’s Gibbirhynchia northamptonensis; the source usage is retained as a nomenclatural qualification rather than silently conflated. Broken and disarticulated shells indicate disturbance. The GCR also records Gibbirhynchia tiltonensis in the cutting’s distinctive Marlstone brachiopod fauna; it should not be assigned automatically to every Band B specimen.

Iron grainstone above Band B, 0.3 m
Fine-grained, ochreous iron grainstone again contains shell debris, ooids and sand. This thin interval intervenes between Band B and the thick upper iron-oolite bed.

Upper iron oolite, 2.0–2.5 m
Ochreous, fine-grained, shell-detrital iron oolite contains scattered belemnites, bivalves and brachiopods. It is largely massive, but crinoid-rich layers locally define cross-lamination with varying current directions. Its upper surface is burrowed.

Cross-lamination at the eastern exposure
A separate 0.4 m exposure at SK 7615 0563 is grey, coarse-crystalline, ooidal and shell-detrital limestone. Crinoid debris defines cross-lamination recording northward, southward, eastward, south-westward and south-eastward current directions. This is an observation from another point in the cutting, not an extra layer to add to the entrance log.

The upper weathered interval and stage boundary
The so-called Transition Bed is described as a weathered upper part of the Marlstone, about 0.01–0.25 m in published accounts, rather than necessarily a separate deposited bed. Upper Marlstone ammonites include records named Tiltoniceras antiquum, Dactylioceras semicelatum and Harpoceras? serpinatum; Ambrose’s 2006 account also records Dactylioceras cf. directum. Tiltoniceras antiquum/acutum usages are not universally equivalent, and historical disagreements must not be erased.

Different age indicators, different boundary estimates
A record of Pleuroceras cf. hawskerense about 3 m below the top contrasts with secure earliest Toarcian ammonites in roughly the upper 0.9 m and an uncertain interval beneath. The foraminifer Rheinholdella macfadyeni suggested a larger Toarcian component, but dinoflagellate cysts place lower Hallam beds 3–4 and the base of bed 7 in the Pliensbachian; upper bed 7 and lower bed 8 are Toarcian. The Survey synthesis puts the boundary about 4–5 m above the base of a roughly 5.7 m formation, whereas the 2006 field account gives about 2.5 m below the top. These are differing published constraints, not one precisely established boundary.

Gastropods in the topmost Marlstone
The GCR account records numerous small gastropods in the uppermost 0.2 m, alongside fossils named Tiltoniceras antiquum, Dactylioceras semicelatum and Gibbirhynchia tiltonensis. This is a particular historical horizon within the upper Marlstone, not an additional bed thickness to stack above it.

Ostracod and microfaunal correlations
The upper weathered Marlstone has been assigned to the Kinkinella sermiosensei/Kinkinella intrepida ostracod zone. A zone name is a correlation label, not proof that both named species were found in every sample. Separately, Lord’s records of Pachycythere tubulosa tubulosa and a taxon abbreviated as T. verrucosa came from the historically named Tilton Sandrock, not this upper weathered interval. Many of those ostracods were encrusted with quartz and unidentifiable; the abbreviation is retained without an unsupported genus expansion. Lord’s 1974 study recovered only a few poorly preserved ostracods from the historically named Tilton Sandrock; that preservation limits the detail that can be inferred from them.

Whitby Mudstone Formation

The basal Whitby contact: a published disagreement
The GCR account interprets the absence of Cleviceras exaratum as evidence that the lower Exaratum interval is missing at the Marlstone–Whitby contact. The Survey describes a sharp contact but reports that Howarth found no biostratigraphical evidence for a non-sequence there. These published interpretations differ and are retained separately; the contact is not assigned one unqualified duration of missing time.

Source-qualified ammonite names
The GCR’s Figure 5.16 labels Orthodactylites semicelatum and Cleviceras elegans. Other accounts and the historical tables use Dactylioceras semicelatum and Harpoceras elegans. The guide preserves these cross-references as source usage rather than treating every historical generic assignment as a universally accepted modern synonym.

A partial lower-formation log
The historical section includes up to about 9 m of lower Whitby Mudstone. Published lower and higher intervals of roughly 2.8 m and 6.2 m are broader descriptions than the short table below and must not be added to its rows. Museum and RGC numbers preserve the correlations among the 1972, 1979 and 1986 records.

RGC 12 (museum 9), 0.51 m
Ferruginous mudstone forms the lowest interval in this measured partial Whitby Mudstone table.

RGC 13a (museum 10), 0.37 m
Fissile mudstone forms thin, papery partings, contrasting with the small limestone lenses above.

RGC 13b (museum 11), 0–0.02 m
A discontinuous lenticular limestone contains fragmented crustacean and insect remains. Its zero lower limit means the lens is locally absent.

RGC 13c (museum 12), 0.03 m
A thin interval of fissile paper-shale mudstone separates the two fossiliferous limestone lenses.

RGC 13d (museum 13), 0–0.08 m
A second lenticular limestone contains fragmented crustacean and insect remains. Its thickness varies laterally and the lens may disappear.

RGC 13e (museum 14), 0.19 m
Fissile mudstone returns above the upper insect- and crustacean-bearing lens.

RGC 13f (museum 15), 0.06 m
Fine-grained limestone contains a small number of bivalves and harpoceratid ammonites.

RGC 14 (museum 16), 0.52 m
Mudstone contains belemnites, bivalves and ammonites. Howarth’s equivalent horizon includes material named Harpoceras serpentinum.

RGC 15a (museum 17), 0.10 m
Limestone contains material recorded as Harpoceras cf. exaratum, other harpoceratid and dactylioceratid ammonites, bivalves and belemnites. Howarth’s correlated interval spanning RGC 15a–15b records Harpoceras elegans, common Harpoceras serpentinum and numerous indeterminate Dactylioceras.

RGC 15b (museum 18), 0.04 m
A thin rubbly limestone continues the ammonite-bearing limestone interval. The correlated fauna applies to the paired 15a–15b interval, not a newly demonstrated separate species list for this 4 cm layer.

RGC 16a (museum 19), 0.86 m
Oolitic mudstone succeeds the thin limestones. In the Survey’s printed top-down table, “fauna as above” refers to the overlying RGC 16b entry, which lists harpoceratid and dactylioceratid ammonites and belemnites. Separately, Howarth’s equivalent horizon specifically records large specimens named Harpoceras serpentinum.

RGC 16b (museum 20), 0.45 m
Ferruginous mudstone with non-calcareous ooids contains Harpoceras cf. falcifer, other harpoceratid and dactylioceratid ammonites and belemnites. Howarth’s equivalent 16b–16c interval includes Harpoceras falciferum and Phylloceras heterophyllum; the different printed name forms are not silently treated as separate species.

RGC 16c (museum 21), 0.23 m
Mudstone with non-calcareous ooids contains dactylioceratid ammonites. It is the upper part of the interval correlated with Howarth’s Harpoceras falciferum and Phylloceras heterophyllum records.

RGC 17 (museum 22), more than 0.60 m
Mudstone with harpoceratid and dactylioceratid ammonites forms the highest part of the partial table. The open-ended thickness does not define the top of the Whitby Mudstone Formation.

Phosphatic ooids and changing water conditions
The Whitby mudstone’s ooids and pisoids are mainly calcium phosphate, with goethite, calcite and aluminosilicates. The matrix contains illite, muscovite and quartz, with trace chamosite and possible authigenic kaolinite. These differ from the iron-silicate ooids of the Marlstone. Immediately above the Marlstone, the calcareous microfauna belongs to JF13–JF14. Low-diversity calcareous microfaunas and marine microplankton support oxygen-poor conditions in parts of the early Toarcian succession; higher dinocyst and miospore evidence reaches the lowermost bifrons interval and indicates improved circulation.

The GCR’s alternative terminology and lower section
The GCR account uses a two-fold Marlstone terminology, with a lower Tilton Sandrock Member and an upper Banbury Ironstone Member. These are retained here as the terms of that account, without adding formal rank bars or assuming that their boundaries coincide exactly with the 2009 Survey framework. It describes about 2 m of underlying Dyrham with a 0.25 m bipartite hard bed. That is an alternative published description, not an extra thickness to add to the three-row Survey log.

Ambrose’s 2006 entrance measurements
Ambrose described an upper ironstone unit about 2.8 m thick and a lower sandy unit about 2.85 m thick. Below that sandy unit he recorded a pebble bed about 0.15 m thick above 0.05–0.12 m of bored limestone. These belong to his own field account and recording scheme; they are not additional beds to stack above or below the Survey’s measured succession.

Changing exposure and slope movement
Ambrose’s second exposure included seepages with iron-oxide deposits and small landslides. His third exposure revealed the Whitby Mudstone discontinuously in steps rather than as a single clean face. These observations explain why comparing logs requires attention to which part of the cutting was visible, and why visitors should keep to the managed route rather than approach unstable faces.

The 1889 section, retained as a separate historical scheme
The following eight intervals reproduce the scope and imperial measurements of Wilson and Crick’s cutting description, from bottom to top. Their old unit names and fossil identifications are historical usage. These rows are an alternative record of the same locality, not extra strata to stack above the modern measured section.

Middle Lias shales, about 13 ft
Wilson and Crick described shales with sandstone bands and scattered limestone nodules, noting that the beds rose northwards. Their fossil list included Amaltheus margaritatus, Protocardium truncatum, Monotis cygnipes, Avicula inaequivalvis and Leda complanata.

Lower arenaceous rock, 3 ft 6 in
The greenish rock had a shell-rich upper part and a nodular lower part. Historical identifications included Amaltheus margaritatus, Gresslya lunulata, Gresslya intermedia, Pleuromya sp., Rhynchonella tetrahedra and Terebratula punctata.

Upper arenaceous rock, 4 ft 6 in
Another greenish interval had a shell-rich upper part and nodular lower part. It yielded shells named Rhynchonella tetrahedra and Terebratula punctata, with belemnites.

Jack bed, 1 ft 6 in
This bluish-green rock locally formed brachiopod-rich “jack”. The recorded fauna included Pecten aequivalvis, Rhynchonella tetrahedra, Terebratula punctata and belemnites.

Oolitic limestone, 4 ft 2 in
Bluish-green finely oolitic limestone contained irregular seams of crinoid material. The authors divided it into three blocks and recorded Pecten aequivalvis, Pecten lunularis and belemnites.

Upper ferruginous limestone, 4 ft 3 in
Bluish-green finely oolitic limestone was described in two blocks. Recorded names included Harpoceras acutum, Stephanoceras commune, Pecten aequivalvis, Pecten lunularis, Terebratula punctata and belemnites.

Transition Bed, printed as 0 ft 9 to 0 ft 6 in
The flaggy limestone contained diverse gastropods, fossil wood and material named Harpoceras acutum, Amaltheus spinatus, Stephanoceras commune, Stephanoceras annulatum, Nautilus truncatus, Belemnites elongatus, Belemnites paxillosus, Lima pectinoides, Pecten aequivalvis, Rhynchonella tetrahedra var. Northamptonensis and Terebratula punctata. The bed-specific gastropods were named Pleurotomaria rustica, Cryptaenia expansa, Trochus lineatus, Trochus ariel, Cerithium(?) confusum and Cerithium ferreum. The original descending thickness range is preserved here; the paper’s 18 ft 5 in total uses the six-inch endpoint. Later interpretation of the weathered top differs, so this is not added as a new bed to the modern log.

Upper Lias shales, about 30 ft
The upper shales were concealed on grass-grown slopes. The few fossils named in this Tilton section were Harpoceras serpentinum, Stephanoceras crassum, Turbo Theodori, Trochus Northamptonensis, Leda ovum and belemnites. This is the Tilton section entry; it is separate from the East Norton Upper Lias assemblage discussed elsewhere in the paper.

A distinctive brachiopod province
Ager’s palaeogeographical comparison highlighted abundant Zeilleria subdigona high in the succession and the absence of characteristic south-western Quadratirhynchia species and Homoeorhynchia acuta from the characteristic Tilton assemblage. These are comparative absences, not records of those taxa being found at the cutting.

Museum specimens with exact cutting provenance
Howarth’s 1992 Plate 6 identifies BM C.80471 and BM C.80246 as Tiltoniceras antiquum from the top 0.1 m of the Marlstone in Tilton railway cutting, SK 762 055. These are precisely localised vouchers. The Tiltoniceras costatum holotype MM L.11431 and paratype BM C.41733 are labelled more broadly as Tilton. By contrast, the Ammonites acutus lectotype GSM 24783 is from King’s Sutton and the Tiltoniceras antiquum lectotype BM C.1885 is Yorkshire material. The historical names and the differing precision of the labels should remain attached to their individual specimens.

Historical fauna and displaced blocks
Wilson and Crick’s 1889 appendix records 110 entries, including varieties, uncertain identifications and indeterminate forms. It is a historical inventory, not a count of 110 accepted modern species. Much of the material was collected from Tilton Marlstone transported to the East Norton railway embankment; original horizons were commonly uncertain. The separate East Norton Upper Lias assemblage is excluded. The grouped names below preserve the appendix’s historical usage, including question marks and provisional names; they are not a modern identification list for fossils visible today.

Provisional names and preserved evidence
The historical Pinna Tiltonensis was proposed from incomplete material and must retain that provisional status. The account of Eodiadema granulata also belongs to the displaced-rock collecting context. The authors discussed fossil wood and inferred that many cephalopods came from the upper transition interval, but that inference cannot restore a precise bed label to every old specimen.

1889 inventory: Reptilia
Ichthyosaurus sp. (vertebrae).

1889 inventory: Cephalopoda
Amaltheus margaritatus; Amaltheus spinatus; Harpoceras acutum; Harpoceras ovatum; Harpoceras serpentinum; Stephanoceras annulatum; Stephanoceras commune; Stephanoceras semicelatum; Belemnites apicicurvatus; Belemnites breviformis; Belemnites clavellatus; Belemnites paxillosus; Nautilus truncatus.

1889 inventory: Gasteropoda
Actaeonina fragilis; Actaeonina ferrea; Actaeonina Ilminsterensis; Actaeonina sinemuriensis; Amberleya (Trochus) Gaudryana; Amberleya (Trochus) Gaudryana, a variety; Cerithium confusum; Cerithium costulatum ?; Cerithium ferreum; Cerithium Ilminsterensis ?; Cerithium liassicum; Cerithium reticulatum ?; Chemnitzia (?) Periniana; Chemnitzia (?) (Turritella) undulata; Cryptaenia expansa; Cryptaenia rotellaeformis; Cryptaenia solarioides; Cylindrites aequalis; Monodonta bullata; Pseudomelania (Chemnitzia) Brannoviensis; Pseudomelania (Phasianella) turbinata; Pseudomelania sp.; Pleurotomaria (Turbo) canalis; Pleurotomaria (Trochus) helicinoides; Pleurotomaria rustica; Pleurotomaria similis (= anglica); Trochus ariel; Trochus Fidia; Trochus lineatus; Trochus Pethertonensis; Trochus rotulus; Turbo cyclostoma; Turbo rugifera (= T. coronatus; = P. costulatum); Turbo latilabrus.

1889 inventory: Lamellibranchiata
Anomia numismalis; Astarte striato-sulcata; Cardinia concinna; Cardinia (Isocardia) Slatteri; Ceromya bombax; Goniomya heteropleura; Gresslya intermedia; Gresslya lunulata; Hinnites abjectus; Hinnites velatus; Inoceramus sp.; Lima eucharis; Lima Hermanni; Lima pectinoides; Limea acuticosta; Limea Juliana; Macrodon Buckmanni; Modiola numismalis; Modiola ornata; Modiola scalprum; Monotis inaequivalvis; Ostrea (Gryphaea) cymbium var. depressa; Ostrea submargaritacea; Pecten acutiradiatus; Pecten aequivalvis; Pecten calvus; Pecten dentatus; Pecten lunularis; Pecten priscus; Pecten textorius; Pinna Tiltonensis n.sp.; Plicatula spinosa; Protocardium truncatum; Tellina gracilis; Unicardium subglobosum.

1889 inventory: Brachiopoda
Discina reflexa; Rhynchonella acuta var. bidens; Rhynchonella Amalthei; Rhynchonella fodinalis; Rhynchonella tetrahedra; Rhynchonella tetrahedra var. Northamptonensis; Spiriferina rostrata; Terebratula punctata; Terebratula punctata var. Edwardsi; Terebratula punctata var. Havesfieldensis; Terebratula punctata var. Radstockensis; Terebratula Walfordi; Waldheimia indentata; Waldheimia numismalis; Waldheimia resupinata; Waldheimia sub-numismalis.

1889 inventory: Bryozoa
Diastopora oolitica; Diastopora stomatoporoides ?.

1889 inventory: Annelida
Ditrupa capitata; Ditrupa etalensis; Ditrupa quinquesulcata; Serpula tetragona; Serpula tricristata.

1889 inventory: Echinodermata
Eodiadema granulata n.sp.; Pentacrinus laevis.

1889 inventory: Actinozoa
Thecocyathus sp.

1889 inventory: Incerta sedis
Onychites sp.

References

British Geological Survey (2009). Geology of the Leicester district. Lias Group account, Tilton measured sections and associated figures.
Simms, M. J., Chidlaw, N., Morton, N. and Page, K. N. (2004). Tilton Railway Cutting, in British Lower Jurassic Stratigraphy. Geological Conservation Review Series, volume 30.
Wilson, E. and Crick, W. D. (1889). The Lias Marlstone of Tilton, Leicestershire. Geological Magazine, pages 296–305 and 337–342. Original section and historical fossil appendix.
Ambrose, K. (2006). Tilton field account. Mercian Geologist, volume 16(3), page 215.
Howarth, M. K. (1992). The ammonite family Hildoceratidae in the Lower Jurassic of Britain. Palaeontographical Society monograph. Tiltoniceras account and Plate 6 locality records.