Where: Saudi Arabia (23.9° N, 46.2° E: paleocoordinates 1.6° S, 34.0° E)

• coordinate stated in text

• outcrop-level geographic resolution

When: Marrat Formation, Bifrons (182.0 - 175.6 Ma)

• Unplaced material derived from 0 to 14.3 m above the base of the upper Marrat limestone

• group of beds-level stratigraphic resolution

Environment/lithology: lithified limestone

Size class: macrofossils

Reposited in the SM

Primary reference: W. J. Arkell. 1952. Jurassic ammonites from Jebel Tuwaiq, central Arabia. Philosophical Transactions of the Royal Society of London, Series B, Biological Sciences 236:241-313 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 184575: authorized by Matthew Clapham, entered by Matthew Clapham on 11.03.2017

Creative Commons license: CC BY (attribution)