Penwhapple (Ordovician of the United Kingdom)

Also known as Craighead Inlier

Where: Scotland, United Kingdom (55.2° N, 4.8° W: paleocoordinates 20.8° S, 28.8° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Ardwell Farm Formation, Caradoc (458.4 - 449.5 Ma)

• "Despite the poorly localized nature of the material, the horizon was probbly within the Ardwell Group [...]" (Evans, 1993). The Ardwell Group now is named Ardwell Farm Formation and is Caradocian in age, according to the The BGS Lexicon of Named Rock Units (http://www.bgs.ac.uk/lexicon).

• formation-level stratigraphic resolution

Environment/lithology: marine; argillaceous sandstone

• The Ardwell Farm Fm. is characterized by "flaggy wacke" (The BGS Lexicon of Named Rock Units, http://www.bgs.ac.uk/lexicon).

Size class: macrofossils

Preservation: cast

Reposited in the BMNH, SM

Primary reference: D. H. Evans. 1994. The Cephalopod Fauna of the Bardahessaigh Formation (Caradoc Series) of Pomeroy, County Tyrone. Irish Journal of Earth Sciences 13:11-29 [B. Kröger/T. Liebrecht/T. Liebrecht]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 89158: authorized by Björn Kröger, entered by Torsten Liebrecht on 07.05.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Cephalopoda
 Dissidocerida - Geisonoceratidae
"Orthoceras politum n. sp." = Virgoceras politum
"Orthoceras politum n. sp." = Virgoceras politum M'Coy 1851
SM A33416 (type); BMNH C2081, C2082