Sample UB1Ai, Speeton (Cretaceous of the United Kingdom)

Where: England, United Kingdom (54.2° N, 0.2° W: paleocoordinates 44.2° N, 10.6° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Prodeshayesites fissicostatus ammonoid zone, Speeton Clay Formation, Early/Lower Aptian (121.4 - 122.5 Ma)

• bed-level stratigraphic resolution

Environment/lithology: offshore; poorly lithified, black, calcareous shale

Size class: macrofossils

Collected by C.J. Underwood, S.F. Mitchell in 1996-1998; reposited in the BMNH

Collection methods: chemical, mechanical

Primary reference: C. J. Underwood. 2004. Barremian and Aptian (Cretaceous) sharks and rays from Speeton, Yorkshire, NE England. Proceedings of the Yorkshire Geological Society 55:107-118 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 213576: authorized by Matthew Clapham, entered by Matthew Clapham on 05.09.2020

Creative Commons license: CC BY (attribution)

Taxonomic list

Chondrichthyes
 Heterodontiformes - Heterodontidae
Heterodontus sp. de Blainville 1816 bullhead shark
 Hexanchiformes - Hexanchidae
"Notorhynchus aptiensis" = Gladioserratus aptiensis
"Notorhynchus aptiensis" = Gladioserratus aptiensis Pictet 1865 cow shark
 Rajiformes - Rhinobatidae
Belemnobatis cf. picteti Cappetta 1975 guitarfish
 Orectolobiformes - Hemiscylliidae
Hemiscylliidae indet. Gill 1862 carpet shark
 Lamniformes - Anacoracidae
Anacoracidae indet. Casier 1947 mackerel shark
 Lamniformes - Cretoxyrhinidae
Cretoxyrhinidae indet. Glückman 1958 mackerel shark
 Carcharhiniformes - Scyliorhinidae
Pteroscyllium speetonensis Underwood 2004 cat shark
 Synechodontiformes - Palaeospinacidae
Synechodus dubrisiensis Mackie 1863 elasmobranch