Thorny Crane Gill (i), Colsterdale (Carboniferous of the United Kingdom)

Where: England, United Kingdom (54.1° N, 1.8° W: paleocoordinates 1.0° S, 6.2° E)

• small collection-level geographic resolution

When: E2 zone, lowest (i) division Member (Colsterdale Marine Beds Formation), Arnsbergian (327.0 - 323.7 Ma)

• Bisat (1914) referred to the marine strata as the Colsterdale Marine Beds, a term retained in this account.

• member-level stratigraphic resolution

Environment/lithology: marine; lithified, ferruginous, gray, argillaceous shale and ironstone

• Paleoenvironment could possibly be paralic or deltaic. There are a lot of preserved wood fragments and other plant remains. It was definitely near-shore, also definitely marine (according to the authors).
• predominantly gray and black shales intercalated with a thin limestone which locally degenerates into a band of calcareous nodules. (i) shales with nuculid-gastropod fauna: dark grey and purplish soapy shales with clay-ironstone nodules.

Primary reference: A. A. Wilson and A. T. Thompson. 1959. Marine bands of Arnsbergian age (Namurian) in the south-eastern portion of the Askrigg Block, Yorkshire. Proceedings of the Yorkshire Geological Society 32(3):45-68 [J. Alroy/M. Sommers/M. Uhen]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 8444: authorized by John Alroy, entered by Mike Sommers on 12.07.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Osteichthyes
 Palaeonisciformes - Palaeoniscidae
Palaeoniscidae indet.
Palaeoniscidae indet. Vogt 1852
palaeoniscid scale
Gastropoda
 Murchisoniina - Gosseletinidae
? Glabrocingulum sp.
? Glabrocingulum sp. Thomas 1940 snail
Bivalvia
 Nuculida - Nuculidae
Nuculopsis gibbosa
 Ostreida - Posidoniidae
Posidonia corrugata
Cephalopoda
 Nautiloidea -
Nautiloidea indet.
Nautiloidea indet. Agassiz 1847 nautiloid
orthocone nautiloid
 Goniatitida - Anthracoceratidae
Anthracoceras paucilobum
Anthracoceras paucilobum Phillips 1836 ammonite