ammonites
Jebel Billum IV-7 (Jurassic of Yemen)

Where: Wadi Hajar, Yemen (14.3° N, 48.4° E: paleocoordinates 11.7° S, 31.1° E)

• small collection-level geographic resolution

When: Upper Member (Shuqra Formation), Callovian (164.7 - 161.2 Ma)

• 1 m below top

• bed-level stratigraphic resolution

Environment/lithology: limestone

• lithology described as limestone

Primary reference: M. K. Howarth and N. J. Morris. 1998. The Jurassic and Lower Cretaceous of Wadi Hajar, southern Yemen. Bulletin of the Natural History Museum (Geology) 54(1):1-32 [M. Patzkowsky/K. Layou/A. Clement] more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 2598: authorized by Mark Patzkowsky, entered by Karen Layou on 09.07.1999