Speeton Clay Fm, Bed D2C, Filey, Yorkshire (Cretaceous of the United Kingdom)

Where: England, United Kingdom (54.2° N, 0.3° W: paleocoordinates 44.8° N, 9.7° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: D Member (Speeton Clay Formation), Early/Lower Hauterivian (136.4 - 130.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; claystone

• The Speeton Clay Fm. consists of a condensed succession, about 130m thick, spanning much of the Lower Cretaceous from the Upper Berriasian to Middle Albian. The sediments are dominantly bioturbated open marine clays, some levels being rich in diagenetic carbonate and phosphate concretions and many units being rich in glauconite. There are a number of distinct horizons of hiatal condensation and erosion at which phosphatic fish material is concentrated.

Size class: macrofossils

Collected in 1985; reposited in the BMNH

Primary reference: V. Fischer, M. W. Maisch, D. Naish, R. Kosma, J. Liston, U. Joger, F. J. Krüger, J. Pardo Pérez, J. Tainsh and R. M. Appleby. 2012. New ophthalmosaurid ichthyosaurs from the European Lower Cretaceous demonstrate extensive ichthyosaur survival across the Jurassic–Cretaceous boundary. PLoS One 7(1):e29234 [P. Mannion/P. Mannion]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 122652: authorized by Philip Mannion, entered by Philip Mannion on 04.01.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Reptilia
 Ichthyosauria - Ophthalmosauridae
Acamptonectes densus
Acamptonectes densus Fischer et al. 2012 ichthyosaur
NHMUK R11185 - paratype (a partial rostrum and mandible, fragmentary ribs and a complete right humerus)