PBDB Collection

Shaqra Group (Tuwaiq Mt. Lst.,T2,middle part) (Jurassic of Saudi Arabia)

Where: Saudi Arabia (25.1° N, 45.7° E: paleocoordinates 0.9° S, 33.7° E)

• coordinate stated in text

• outcrop-level geographic resolution

When: Tuwaiq Mt.Lst. Formation (Shaqra Group), Callovian (166.1 - 163.5 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.

• in the middle part the limestones are bioclastic and 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 47895: authorized by Franz Fursich, entered by Simone Hicks on 07.03.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

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Foraminifera
Textulariina - Pfenderinidae	Kurnubia bramkampi, Kurnubia sp. Kurnubia bramkampi Kurnubia sp. Henson 1948
Cephalopoda
Ammonitida - Pachyceratidae	Pachyceratidae sp., Kurnubiella ex gr. hatirae, Pachyerymnoceras sp. Pachyceratidae sp. Buckman 1918 ammonite =1.s.=Ammo. Kurnubiella ex gr. hatirae ammonite Pachyerymnoceras sp. ammonite
Ammonitida - Stephanoceratidae	Pseudoclydoniceras sp. Pseudoclydoniceras sp. Collignon 1958 ammonite =Ammo.
Bivalvia
Pholadomyida - Pholadomyidae	Homomya cf. gibbosa, Pholadomya lirata, "Pholadomya protei" = Pholadomya (Bucardiomya) protei Homomya cf. gibbosa Sowerby 1814 clam Pholadomya lirata Sowerby 1818 clam "Pholadomya protei" = Pholadomya (Bucardiomya) protei Brongniart 1821 clam
Thraciida - Thraciidae	Thracia cf. curtensata Thracia cf. curtensata clam
Pholadida - Ceratomyidae	Ceratomya excentrica Ceratomya excentrica Roemer 1836 clam
Megalodontida - Ceratomyopsidae	Ceratomyopsis cf. arabica, Ceratomyopsis somaliensis Ceratomyopsis cf. arabica Cox 1935 clam Ceratomyopsis somaliensis Weir 1929 clam
Carditida - Astartidae	Coelopis cf. lunata Coelopis cf. lunata clam
Mytilida - Mytilidae	Mytilus cf. jurensis, Inoperna cf. sowerbyana Mytilus cf. jurensis Merian 1836 mussel Inoperna cf. sowerbyana mussel
Pectinida - Pectinoidae	Eopecten inequistriatus, Chlamys splenaens, Chlamys cf. curvivarians Eopecten inequistriatus scallop Chlamys splenaens scallop Chlamys cf. curvivarians Dietrich 1933 scallop
Pectinida - Limidae	Plagiostoma cf. subcardiiformis Plagiostoma cf. subcardiiformis Greppin 1867 file clam
Pectinida - Entoliidae	"Entolium cf. corneolum" = Entolium (Entolium) corneolum "Entolium cf. corneolum" = Entolium (Entolium) corneolum Young and Bird 1828 scallop
Ostreida - Pinnidae	Trichites saussurei Trichites saussurei oyster
Ostreida - Palaeolophidae	"Lopha solitaria" = Actinostreon gregareum "Lopha solitaria" = Actinostreon gregareum Sowerby 1816 oyster
Arcida - Parallelodontidae	Parallelodon hirsonensis Parallelodon hirsonensis d'Archiac 1843 clam
Rhynchonellata
Rhynchonellida - Tetrarhynchiidae	Kutchirhynchia indica, Daghanirhynchia daghaniensis Kutchirhynchia indica d'Orbigny 1847 Daghanirhynchia daghaniensis Muir-Wood 1935
Terebratulida - Loboidothyrididae	Bihenithyris barringtoni Bihenithyris barringtoni Muir-Wood 1935
Terebratulida -	Magharithyris cf. triplicata Magharithyris cf. triplicata Farag and Gatinaud 1960