Where: England, United Kingdom (50.7° N, 2.8° W: paleocoordinates 37.9° N, 6.5° E)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Thorncombe Formation, Margaritatus (189.6 - 183.0 Ma)
• Thorncombiensis bed near the top of the Thorncombe Sands, near the top of the Margaritatus zone according to Ager (1956).
Environment/lithology: marine; lithified sandstone
Size class: macrofossils
Collected by D.V. Ager; reposited in the BMNH
Primary reference: D. V. Ager. 1954. The genus Gibbirhynchia in the British Domerian. Proceedings of the Geologists' Association 65:25-51 [M. Clapham/M. Clapham]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 138202: authorized by Matthew Clapham, entered by Matthew Clapham on 06.01.2013
Creative Commons license: CC BY (attribution)
Taxonomic list
Rhynchonellata | |
Homoeorhynchia acuta Sowerby 1816 | |
Gibbirhynchia thorncombiensis Buckman 1922 |