Shaqra Group (Dhruma Fm.) (Jurassic of Saudi Arabia)

Where: Saudi Arabia (23.1° N, 46.3° E: paleocoordinates 2.9° S, 33.3° E)

• coordinate stated in text

• outcrop-level geographic resolution

When: Atash Mb. Member (Dhruma Formation), Callovian (166.1 - 163.5 Ma)

Environment/lithology: lagoonal or restricted shallow subtidal; lithified limestone

• The Dhruma Fm. essentially is composed of limestones and clayey rocks in its central outcrop zone but passes to detrial facies northwards and southwards.

Size classes: macrofossils, microfossils

Collection methods: bulk, mechanical,

Primary reference: J. Manivit, Y.-M. Le Nindre, and D. Vaslet. 1990. Le Jurassique D`Arabie Centrale. Document du BRGM 4(194):25-519 [F. Fursich/S. Hicks/W. Kiessling]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 48499: authorized by Franz Fursich, entered by Simone Hicks on 21.03.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Foraminifera
 Lituolacea - Nautiloculinidae
Nautiloculina oolithica
 Involutinina - Trocholinidae
Trocholina ex gr. elongata