Where: England, United Kingdom (52.6° N, 0.9° W: paleocoordinates 40.3° N, 8.5° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Tenuicostatum (183.0 - 182.0 Ma)

• "Transition Bed" (horizon of Tiltoniceras acutum)

Environment/lithology: marine; lithified lithology not reported

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 138205: authorized by Matthew Clapham, entered by Matthew Clapham on 06.01.2013

Creative Commons license: CC BY (attribution)