Christian Malford (Jurassic of the United Kingdom)

Where: England, United Kingdom (51.5° N, 2.1° W: paleocoordinates 41.2° N, 8.0° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Oxford Clay Formation, Callovian (166.1 - 163.5 Ma)

• probably Jason zone

Environment/lithology: offshore; lithified, carbonaceous mudstone

• "accumulated in a wide, shallow (30–50 m deep) epeiric sea"
• "The Lower Oxford Clay is composed predominantly of organic-rich mudstones that on exposure rapidly develop a shale-like fissility" (Hudson & Martill 1991, p. 20-21)

Size class: macrofossils

Preservation: adpression, soft parts

Reposited in the BMNH

Collection methods: quarrying, surface (in situ), mechanical,

Primary reference: D. H. Rayner. 1948. The Structure of Certain Jurassic Holostean Fishes with Special Reference to Their Neurocrania. Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences 233(601):287-345 [M. Clapham/P. Vazquez]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 130656: authorized by Matthew Clapham, entered by Priscilla Vazquez on 12.07.2012, edited by Roger Benson and Valerie Syverson

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Actinopteri
 Teleostei - Aspidorhynchidae
Aspidorhynchus euodus4 Egerton 1845
BMNH 40518 (purchased 1867), P.7575 (history unknown), P.967a-b (Egerton Coll.), 46345-a (Cunnington Coll.), P.5147, P.567c (Egerton Coll.), P.4281-2 (Enniskillen Coll.), 29042-44 (purchased 1854), 37319 (purchased 1863), 21430-a (purchased 1847), 46350 (Cunnington Coll.), 21430b, 29045-a (purchased 1854), 46349 (Cunnington Coll.), 40519, 41296, 42295, 46412 (purchased 1867, 1869, 1870, 1875), P.967d (Egerton Coll.), 21430c, 24976, 29047 (purchased 1847, 1850, 1854)
 Pholidophoriformes - Pholidophoridae
Pholidophorus sp.4 Agassiz 1843
BMNH 26471-a (purchased 1851), P.4265, P.4634 (Enniskillen Coll.)
 Leptolepidiformes - Leptolepididae
Leptolepis macrophthalmus n. sp.4 Egerton 1853
BMNH P.575-6, P.3677 (Egerton & Enniskillen Colls.), 46344 (Cunnington Coll.), 20090, 19959 (purchased 1846), 21435 (purchased 1847), P.936, P.5145-46, P.937 (Egerton Coll.), P.4364 (Enniskillen Coll.)
 Amiiformes - Caturidae
Caturus porteri n. sp. Rayner 1948 bowfin
BMNH 29049
 Lepisosteiformes -
Lepidotus macrocheirus4 Egerton 1845 gar
BMNH P.7412 (type specimen described by Egerton), P.7413 (both presented by S.P. Pratt, Esq.)
Reptilia
 Sauropterygia - Cryptoclididae
"Plesiosaurus trochanterius" = Colymbosaurus trochanterius3
"Plesiosaurus trochanterius" = Colymbosaurus trochanterius3 Owen 1840 plesiosaur
A femur in the collection of the Earl of Enniskillen
 Sauropterygia - Pliosauridae
"Pliosaurus ferox" = Liopleurodon ferox2 Sauvage 1873 plesiosaur
BMNH 24683, a small tooth, purchased 1850
Peloneustes philarchus2 Seeley 1869 plesiosaur
BMNH 46354, a tooth in matrix, purchased 1875
Ophioplax
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