Stowell Park borehole (A. bucklandi Zone, C. rotiforme Subzone, 1815-1844ft) (Jurassic of the United Kingdom)

Where: Gloucestershire, United Kingdom (51.8° N, 1.9° W: paleocoordinates 38.6° N, 4.2° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Coroniceras rotiforme ammonoid zone, Lower Lias Formation (Lias Group), Early/Lower Sinemurian (196.5 - 189.6 Ma)

• "Arietites bucklandi Zone, Coroniceras rotiforme Subzone" (Melville 1956)

•"1814ft 6in - c. 1844ft" (Melville 1956)

• group of beds-level stratigraphic resolution

Environment/lithology: lime mudstone

• "Dark grey and black calcareous mudstone, often indurated, with subordinate shale bands and occasional limestone nodules and bands" (Green & Melville 1956)

Size class: macrofossils

Preservation: mold/impression

Reposited in the BGS

Collection methods: core

Primary reference: R. V. Melville. 1956. The Stratigraphical Palaeontology, ammonites excluded, of the Stowell Park borehole. Bulletin of the Geological Survey of Great Britain 11:67-139 [A. Dunhill/B. Allen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 204156: authorized by Alex Dunhill, entered by Bethany Allen on 02.09.2019

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Ostreida - Ostreidae
Ostrea sp. Linnaeus 1758 oyster
 Pectinida - Anomiidae
"Placunopsis cf. schafhaeutli" = Anomia schafhaeutli
"Placunopsis cf. schafhaeutli" = Anomia schafhaeutli Winkler 1859 jingle
 Pectinida - Buchiidae
"Anningia cf. faberi" = Anningella
"Anningia cf. faberi" = Anningella scallop
Cephalopoda
 Ammonitida - Arietitidae
"Coroniceras cf. schloenbachi" = Coroniceras, "Coroniceras rotator" = Coroniceras, "Coroniceras coronaries" = Coroniceras, "? Arnioceratoides sp." = Coroniceras, Coroniceras rotiforme, Arnioceras kridion, "Ammonites cf. multicostatus" = Arnioceras semilaeve, Vermiceras cf. spiratissimum
"Coroniceras cf. schloenbachi" = Coroniceras ammonite
"Coroniceras rotator" = Coroniceras ammonite
"Coroniceras coronaries" = Coroniceras ammonite
"? Arnioceratoides sp." = Coroniceras Hyatt 1867 ammonite
Coroniceras rotiforme Sowerby 1824 ammonite
"Ammonites cf. multicostatus" = Arnioceras semilaeve Hauer 1853 ammonite
Vermiceras cf. spiratissimum Quenstedt 1852 ammonite