Axmouth bone bed (Egerton coll) (Triassic of the United Kingdom)

Where: England, United Kingdom (50.7° N, 3.1° W: paleocoordinates 35.1° N, 0.8° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Westbury Formation (Penarth Group), Rhaetian (208.5 - 201.3 Ma)

• Bonebed is at the base of the Westbury Formation

• bed-level stratigraphic resolution

Environment/lithology: coastal; lithified, lenticular, sandy conglomerate

• marine coastal conditions, possibly a result of a storm or the Rhaetian transgression
• "lenses of grit or intra-formational conglomerate (or breccia) of sedimentary rocks with a calcite-cemented sandy matrix"

Size classes: macrofossils, mesofossils

Collected by Sir Philip de Malpas Grey Egerton; reposited in the BMNH

Primary reference: A. S. Woodward. 1895. Catalogue of the Fossil Fishes in the British Museum (Natural History), Part III 1-544 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 122366: authorized by Matthew Clapham, entered by Matthew Clapham on 22.12.2011, edited by Priscilla Vazquez and Matthew Carrano

Creative Commons license: CC BY (attribution)

Taxonomic list

Osteichthyes
 Palaeonisciformes - Birgeriidae
"Saurichthys acuminatus" = Birgeria acuminata
"Saurichthys acuminatus" = Birgeria acuminata Agassiz 1843
BMNH P855-6 (six teeth)
 Palaeonisciformes - Palaeoniscidae
"Gyrolepis albertii" = Gyrolepis albertii2, "Gyrolepis tenuistriatus" = Gyrolepis albertii2
"Gyrolepis albertii" = Gyrolepis albertii2 Agassiz 1834
"Gyrolepis tenuistriatus" = Gyrolepis albertii2 Agassiz 1834
Chondrichthyes
 Hybodontiformes -
"Acrodus minimus" = Lissodus minimus1
"Acrodus minimus" = Lissodus minimus1 Agassiz 1839 elasmobranch
BMNH P.2135, P.2130
 Hybodontiformes - Hybodontidae
Hybodus plicatilis2 Agassiz 1834 elasmobranch
 Synechodontiformes -
"Hybodus minor" = Rhomphaiodon minor1
"Hybodus minor" = Rhomphaiodon minor1 Agassiz 1837 elasmobranch
BMNH P.2194, P.2193a