Locality 64, Wadi Birk (Aramco S-1631) (Jurassic of Saudi Arabia)

Where: Saudi Arabia (23.2° N, 46.5° E: paleocoordinates 2.8° S, 33.6° E)

• coordinate stated in text

• outcrop-level geographic resolution

When: Dhruma Formation, Middle Bathonian (167.7 - 164.7 Ma)

• Micromphalites fauna, on surface 83.6 m above top of Dhibi limestone (4 m above base of Gryphaea costellata beds). Nature of exposures preclude this specimen having been derived from more than a few meters stratigraphically above the level listed.

• 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 184580: authorized by Matthew Clapham, entered by Matthew Clapham on 11.03.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

 Ammonitida - Clydoniceratidae