Shaqra Group (Tuwaiq Mt. Lst.,T3,2 ) (Jurassic of Saudi Arabia)

Where: Saudi Arabia (25.1° N, 45.7° E)

• Paleocoordinates: 5.5° S, 45.0° E (Wright 2013)

• coordinate stated in text

• outcrop-level geographic resolution

When: Tuwaiq Mt.Lst. Formation (Shaqra Group), Callovian (165.3 - 161.5 Ma)

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

• The Tuwaiq Mt. Lst. of middle to late Callovian age; locally clayey at the base; this predominantly calcareous formation determines the characteristic relief of central Arabia (Jabal Tuwayq); it is a reef platform.
• clayey limestones, high in fossils

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 47898: authorized by Franz Fursich, entered by Simone Hicks on 07.03.2005

Creative Commons license: CC0 (CC0)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Thadiquithyris thadiquiensis
Echinoidea
 Euechinoidea - Hemicidaridae
Pseudocidaris dubia
Crinoidea
 Millericrinida - Millericrinidae
Ceriocrinus sp.
Ceriocrinus sp. Sea lily
=Crinoidea,Koenig (1845) unpubl.,Agassiz (1836)
 Millericrinida - Apiocrinitidae
Apiocrinites sp.
Apiocrinites sp. Miller 1821 Sea lily
Rhynchonellata
 Terebratulida - Loboidothyrididae
Bihenithyris weiri
Bihenithyris weiri Muir-Wood 1935
 Rhynchonellida - Tetrarhynchiidae
Kutchirhynchia indica
Kutchirhynchia indica d'Orbigny 1847
Bivalvia
 Pectinida - Pectinoidae
Chlamys curvivarians
Chlamys curvivarians Dietrich 1933 scallop
 Ostreida - Gryphaeidae
Gryphaea sp.
Gryphaea sp. Lamarck 1801 oyster
 Mytilida - Mytilidae
Arcomytilus laitmairensis
Arcomytilus laitmairensis de Loriol 1883 mussel
Foraminifera
 Textulariina - Pfenderinidae
Kurnubia ex gr. palastiniensis, Kurnubia sp.
Kurnubia sp. Henson 1948