PBDB Collection

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

Where: Saudi Arabia (24.0° N, 46.2° E: paleocoordinates 2.0° S, 33.7° E)

• coordinate stated in text

• outcrop-level geographic resolution

When: Dhruma Formation (Shaqra Group), Bathonian (168.3 - 166.1 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 48142: authorized by Franz Fursich, entered by Simone Hicks on 15.03.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names

unclassified
-	Trichordis sp. Trichordis sp. =n.sp.=Ostrac.
Foraminifera
Textulariina - Prolixoplectidae	Riyadhella rotundata, Riyadhella elongata Riyadhella rotundata Riyadhella elongata
Lituolacea - Nautiloculinidae	Nautiloculina oolithica Nautiloculina oolithica
Ataxophragmiacea - Globotextulariidae	Pseudomarssonella reflexa Pseudomarssonella reflexa
Involutinina - Trocholinidae	Trocholina sp. Trocholina sp. Paalzow 1922 =Foram.
Echinoidea
Salenioida - Acrosaleniidae	Acrosalenia arabica, Acrosalenia bowersi Acrosalenia arabica sea urchin Acrosalenia bowersi sea urchin
Rhynchonellata
Terebratulida - Eudesiidae	"Eudesia magharensis" = Eudesia (Sphriganaria) magharensis "Eudesia magharensis" = Eudesia (Sphriganaria) magharensis Farag 1960
Rhynchonellida - Tetrarhynchiidae	Kallirhynchia sp., Burmirhynchia sp. Kallirhynchia sp. Buckman 1917 =sp.1 Burmirhynchia sp. Buckman 1917 =n.sp.A
Bivalvia
Lucinida - Mactromyidae	Mactromya cf. crassa Mactromya cf. crassa Agassiz 1845 clam
Lucinida - Lucinidae	Fimbria cf. lajoyei Fimbria cf. lajoyei d'Archiac 1843 clam
Megalodontida - Dicerocardiidae	Pseudisocardia cf. macfadyeni Pseudisocardia cf. macfadyeni Cox 1935 clam
Megalodontida - Ceratomyopsidae	Ceratomyopsis somaliensis, Ceratomyopsis cf. arabica Ceratomyopsis somaliensis Weir 1929 clam Ceratomyopsis cf. arabica Cox 1935 clam
Cardiida - Pterocardiidae	Pterocardia buvignieri Pterocardia buvignieri clam
Cardiida - Arcticidae	Pseudotrapezium cf. cordiformis Pseudotrapezium cf. cordiformis clam
Pholadida - Pleuromyidae	Pleuromya cf. alduini Pleuromya cf. alduini Brongniart 1821 clam
Pholadida - Ceratomyidae	Ceratomya cf. concentrica Ceratomya cf. concentrica Sowerby 1822 clam
Pholadomyida - Pholadomyidae	Pholadomya aequalis, Pholadomya cf. aubryi, "Pholadomya somaliensis" = Pholadomya (Bucardiomya) somaliensis, Pholadomya lirata, Homomya cf. gibbosa Pholadomya aequalis clam Pholadomya cf. aubryi Douville 1886 clam "Pholadomya somaliensis" = Pholadomya (Bucardiomya) somaliensis Cox 1935 clam Pholadomya lirata Sowerby 1818 clam Homomya cf. gibbosa Sowerby 1814 clam
Trigoniida - Trigoniidae	Trigonia ex gr. pullus Trigonia ex gr. pullus Sowerby 1826 clam
Mytilida - Mytilidae	Inoperna cf. sowerbyana, Arcomytilus somaliensis, Modiolus bipartitus, "Modiolus imbricatus" = Modiolus (Modiolus) imbricatus Inoperna cf. sowerbyana mussel Arcomytilus somaliensis mussel Modiolus bipartitus Sowerby 1818 mussel "Modiolus imbricatus" = Modiolus (Modiolus) imbricatus Sowerby 1818 mussel
Ostreida - Pinnidae	Stegoconcha cf. gmuelleri Stegoconcha cf. gmuelleri Krenkel 1910 oyster
Ostreida - Palaeolophidae	"Lopha gregarea" = Actinostreon gregareum, "Lopha solitaria" = Actinostreon gregareum "Lopha gregarea" = Actinostreon gregareum Sowerby 1816 oyster "Lopha solitaria" = Actinostreon gregareum Sowerby 1816 oyster
Ostreida - Eligmidae	Eligmus aff. rollandi, Eligmus polytypus Eligmus aff. rollandi Douvillé 1907 oyster Eligmus polytypus Eudes-Deslongchamps 1856 oyster
Pectinida - Entoliidae	"Entolium cf. corneolum" = Entolium (Entolium) corneolum "Entolium cf. corneolum" = Entolium (Entolium) corneolum Young and Bird 1828 scallop
Pectinida - Oxytomidae	Oxytoma cf. inaequivalis Oxytoma cf. inaequivalis scallop
Pectinida - Limidae	"Plagiostoma gigantea" = Plagiostoma giganteum, Pseudolimea harronis "Plagiostoma gigantea" = Plagiostoma giganteum Sowerby 1814 file clam Pseudolimea harronis file clam
Pectinida - Pectinoidae	Spondylopecten cf. subspinosus, Eopecten regulatus, Chlamys cf. curvivarians Spondylopecten cf. subspinosus scallop Eopecten regulatus scallop Chlamys cf. curvivarians Dietrich 1933 scallop
Arcida - Parallelodontidae	Parallelodon hirsonensis Parallelodon hirsonensis d'Archiac 1843 clam
Gastropoda
Sorbeoconcha - Tylostomatidae	Pterodonta sp. Pterodonta sp. d'Orbigny 1843 snail
Architaenioglossa - Ampullinidae	Globularia sp. Globularia sp. Swainson 1840 snail
Heterostropha - Nerineidae	Nerinea sp. Nerinea sp. Deshayes 1827 snail
Trochoidea - Trochidae	Trochus sp. Trochus sp. Linnaeus 1758 top snail
Ostracoda
Podocopida - Bairdiidae	Bairdia cf. hilda Bairdia cf. hilda ostracod
Podocopida -	Glyptocythere huniensis Glyptocythere huniensis ostracod
-	Amicytheridea sp. Amicytheridea sp. ostracod =n.sp.A=Ostrac.