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

Where: Saudi Arabia (24.6° N, 46.0° E: paleocoordinates 1.4° S, 33.8° E)

• coordinate stated in text

• outcrop-level geographic resolution

When: Dhruma Formation (Shaqra Group), Bajocian (170.3 - 168.3 Ma)

• between the reference profile of Khashm adh Dhibi and lat. 25°N

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 48109: authorized by Franz Fursich, entered by Simone Hicks on 14.03.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Cephalopoda
 Ammonitida - Sonniniidae
"Sonninia (Sherbornites) cf. projectifer" = Sonninia (Euhoploceras) adicra
"Sonninia (Sherbornites) cf. projectifer" = Sonninia (Euhoploceras) adicra Waagen 1867 ammonite