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

Where: Saudi Arabia (23.2° N, 46.3° E: paleocoordinates 2.8° S, 33.4° E)

• coordinate stated in text

• outcrop-level geographic resolution

When: Dhruma Formation (Shaqra Group), Bajocian (170.3 - 168.3 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 48086: authorized by Franz Fursich, entered by Simone Hicks on 13.03.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Bivalvia
 Mytilida - Mytilidae
Inoperna cf. sowerbyana
 Pholadomyida - Pholadomyidae
Homomya sp.
Homomya sp. Agassiz 1843 clam
 Cardiida - Quenstedtiidae
Quenstedtia sp.
Quenstedtia sp. Morris 1854 clam
Cephalopoda
 Ammonitida - Stephanoceratidae
Ermoceras coronatoides
Ermoceras coronatoides Douvillé 1916 ammonite
Rhynchonellata
 Rhynchonellida - Tetrarhynchiidae
Burmirhynchia termierae
Burmirhynchia termierae Rousselle 1965