PBDB Collection

Shaqra Group (Dhruma Fm.) (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: Atash Mb. Member (Dhruma Formation), Callovian (166.1 - 163.5 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 48564: authorized by Franz Fursich, entered by Simone Hicks on 23.03.2005, edited by Wolfgang Kiessling

Creative Commons license: CC BY (attribution)

Taxonomic list

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Echinoidea
Pedinoida -	Farquharsonia sp., Farquharsonia somaliensis Farquharsonia sp. sea urchin =n.sp.1 Farquharsonia somaliensis sea urchin
Salenioida - Acrosaleniidae	Acrosalenia hemicrenulata, Acrosalenia sp., Heterosalenia ornata Acrosalenia hemicrenulata sea urchin Acrosalenia sp. Agassiz 1840 sea urchin Heterosalenia ornata sea urchin
Calycina -	Leioechinus amplus, Leioechinus namus Leioechinus amplus sea urchin Leioechinus namus sea urchin
Euechinoidea - Hemicidaridae	Pseudocidaris cf. macfadyeni Pseudocidaris cf. macfadyeni sea urchin
Rhynchonellata
Rhynchonellida - Tetrarhynchiidae	Burmirhynchia sp., Kutchirhynchia gregoryi, Daghanirhynchia sp., Daghanirhynchia subversabilis, Daghanirhynchia daghaniensis Burmirhynchia sp. Buckman 1917 =n.sp.B Kutchirhynchia gregoryi Weir 1929 Daghanirhynchia sp. Muir-Wood 1935 Daghanirhynchia subversabilis Weir 1925 Daghanirhynchia daghaniensis Muir-Wood 1935
Terebratulida - Zeilleriidae	Rugitela bullata, Rugitela sp. Rugitela bullata Rugitela sp.
Terebratulida - Eudesiidae	"Eudesia cardioides" = Eudesia (Sphriganaria) cardioides, Flabellothyris dichotoma, "Eudesia multicostata" = Eudesia (Eudesia) multicostata "Eudesia cardioides" = Eudesia (Sphriganaria) cardioides Douvillé 1916 Flabellothyris dichotoma Kitchin 1900 "Eudesia multicostata" = Eudesia (Eudesia) multicostata Tintant 1963
Terebratulida - Loboidothyrididae	"Cererithyris bihinensis" = Arabatia bihinensis, Cererithyris africana "Cererithyris bihinensis" = Arabatia bihinensis Weir 1929 Cererithyris africana
Terebratulida - Lobothyrididae	Tubithyris sp. Tubithyris sp. Buckman 1917
Cephalopoda
Nautilida - Nautilidae	Eutrephoceras aff. douvillei Eutrephoceras aff. douvillei Spath 1927 nautiloid
Bivalvia
Nuculida - Nuculidae	"Nucula cf. cuneiformis" = Nucula (Palaeonucula) cuneiformis "Nucula cf. cuneiformis" = Nucula (Palaeonucula) cuneiformis Sowerby 1840 nut clam
Mytilida - Mytilidae	Arcomytilus somaliensis, Falcimytilus aff. suprajurensis, Inoperna cf. sowerbyana Arcomytilus somaliensis mussel Falcimytilus aff. suprajurensis Cox 1925 mussel Inoperna cf. sowerbyana mussel
Pectinida - Pectinoidae	Chlamys curvivarians, "Chlamys cf. textorius" = Chlamys textoria, Camptonectes laminatus, Eopecten inequistriatus Chlamys curvivarians Dietrich 1933 scallop "Chlamys cf. textorius" = Chlamys textoria Schlotheim 1820 scallop Camptonectes laminatus Sowerby 1818 scallop Eopecten inequistriatus scallop
Pectinida - Limidae	Pseudolimea harronis, Plagiostoma cf. subcardiiformis Pseudolimea harronis file clam 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 - Palaeolophidae	"Lopha solitaria" = Actinostreon gregareum "Lopha solitaria" = Actinostreon gregareum Sowerby 1816 oyster
Ostreida - Gryphaeidae	Bilobissa sublobata, Gryphaea costellata, "Catinula knorri" = Gryphaea (Catinula) Bilobissa sublobata Deshayes 1830 oyster Gryphaea costellata Douvillé 1916 oyster "Catinula knorri" = Gryphaea (Catinula) oyster
Arcida - Parallelodontidae	Parallelodon hirsonensis Parallelodon hirsonensis d'Archiac 1843 clam
Pholadida - Pleuromyidae	Pleuromya cf. alduini Pleuromya cf. alduini Brongniart 1821 clam
Pholadomyida - Pholadomyidae	"Pholadomya protei" = Pholadomya (Bucardiomya) protei, Pholadomya lirata, Pholadomya cf. ovalis, Homomya cf. gibbosa "Pholadomya protei" = Pholadomya (Bucardiomya) protei Brongniart 1821 clam Pholadomya lirata Sowerby 1818 clam Pholadomya cf. ovalis Sowerby 1819 clam Homomya cf. gibbosa Sowerby 1814 clam
Thraciida - Thraciidae	Thracia cf. curtensata Thracia cf. curtensata clam
Lucinida - Mactromyidae	Mactromya cf. concentrica Mactromya cf. concentrica clam
Carditida - Astartidae	Neocrassina ovata, Coelopis cf. lunata Neocrassina ovata clam Coelopis cf. lunata clam
Trigoniida - Trigoniidae	Trigonia ex gr. pullus Trigonia ex gr. pullus Sowerby 1826 clam
Anthozoa
Scleractinia - Oppelismiliidae	"Haimeicyclus" sp. "Haimeicyclus" sp. Alloiteau 1957 stony coral
Scleractinia - Microsolenidae	Chomatoseris jacobi, Microsolena sp. Chomatoseris jacobi Alloiteau 1945 stony coral Microsolena sp. Lamouroux 1821 stony coral
Foraminifera
Involutinina - Trocholinidae	Trocholina ex gr. elongata Trocholina ex gr. elongata =Foram.
Lituolida - Lituolidae	Ammobaculites sp. Ammobaculites sp. Cushman 1910
Lituolacea - Nautiloculinidae	Nautiloculina sp. Nautiloculina sp. Mohler 1938
Textulariina - Pfenderinidae	Praekurnubia crusei, Pfenderina gracilis Praekurnubia crusei Pfenderina gracilis
Ataxophragmiacea - Globotextulariidae	Pseudomarssonella sp. Pseudomarssonella sp. Redmond 1965