Shaqra Group (Jubaila Lst.) (Jurassic of Saudi Arabia)

Where: Saudi Arabia (22.6° N, 46.5° E: paleocoordinates 4.0° S, 33.3° E)

• coordinate stated in text

• outcrop-level geographic resolution

When: Unite Ju 1 Member (Jubaila Lst. Formation), Kimmeridgian (157.3 - 152.1 Ma)

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

• The Jubaila Lst. of early Kimmeridgian age, consists of limestone incorporating sandy facies to the south and northwest margins on the shelf, characterized commonly by reworking associated with violent terrigenous influx.

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 45650: authorized by Franz Fursich, entered by Simone Hicks on 21.11.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Cephalopoda
 Ammonitida - Perisphinctidae
Perisphinctes aff. jubailensis
Perisphinctes aff. jubailensis Arkell 1952 ammonite
 Nautilida - Paracenoceratidae
Paracenoceras aff. wepferi, Paracenoceras ex gr. hexagonum
Paracenoceras aff. wepferi von Loesch 1914 nautiloid
Paracenoceras ex gr. hexagonum Sowerby 1826 nautiloid
Bivalvia
 Pholadida - Ceratomyidae
Ceratomya sp.
Ceratomya sp. Sandberger 1864 clam
 Megalodontida - Ceratomyopsidae
Ceratomyopsis sp.
Ceratomyopsis sp. Cossmann 1915 clam
 Ostreida - Gryphaeidae
"Nanogyra nana" = Nanogyra (Nanogyra) nana
"Nanogyra nana" = Nanogyra (Nanogyra) nana Sowerby 1822 oyster