PBDB Collection

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

Where: Saudi Arabia (22.5° N, 46.2° E: paleocoordinates 3.3° S, 33.0° E)

• coordinate stated in text

• outcrop-level geographic resolution

When: Dhibi Lst. Member (Dhruma Formation), Bajocian (170.3 - 168.3 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 48106: authorized by Franz Fursich, entered by Simone Hicks on 14.03.2005, edited by Wolfgang Kiessling

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names

unclassified
-	Orbonella sp. Orbonella sp. =Gastr.
Cephalopoda
Ammonitida - Stephanoceratidae	Ermoceras deserti, Ermoceras coronatoides, Ermoceras splendens, Ermoceras magnificum, "Ermoceras elegans" = Ermoceras (Kosmermoceras) elegans Ermoceras deserti Douvillé 1916 ammonite Ermoceras coronatoides Douvillé 1916 ammonite Ermoceras splendens Arkell 1952 ammonite Ermoceras magnificum Arkell 1952 ammonite "Ermoceras elegans" = Ermoceras (Kosmermoceras) elegans Douvillé 1916 ammonite
Ammonitida - Oppeliidae	Bradfordia sp. Bradfordia sp. Buckman 1910 ammonite
Gastropoda
Pleurotomarioidea - Pleurotomariidae	Obornella sp. Obornella sp. Cox 1959 snail =Gastr.
Bivalvia
Mytilida - Mytilidae	Modiolus bipartitus, Inoperna cf. sowerbyana Modiolus bipartitus Sowerby 1818 mussel Inoperna cf. sowerbyana mussel
Ostreida - Palaeolophidae	"Lopha solitaria" = Actinostreon gregareum "Lopha solitaria" = Actinostreon gregareum Sowerby 1816 oyster
Pectinida - Limidae	Plagiostoma cf. laeviusculum, "Plagiostoma gigantea" = Plagiostoma giganteum, "Lima gigantea" = Plagiostoma gigantea Plagiostoma cf. laeviusculum file clam "Plagiostoma gigantea" = Plagiostoma giganteum Sowerby 1814 file clam "Lima gigantea" = Plagiostoma gigantea Boehm 1911 file clam
Pectinida - Oxytomidae	Oxytoma cf. inaequivalis Oxytoma cf. inaequivalis scallop
Pectinida - Entoliidae	"Entolium cf. corneolum" = Entolium (Entolium) corneolum "Entolium cf. corneolum" = Entolium (Entolium) corneolum Young and Bird 1828 scallop
Pectinida - Pectinoidae	Chlamys nattheimensis, "Chlamys cf. textorius" = Chlamys textoria, Spondylopecten cf. subspinosus Chlamys nattheimensis scallop "Chlamys cf. textorius" = Chlamys textoria Schlotheim 1820 scallop Spondylopecten cf. subspinosus scallop
Trigoniida - Trigoniidae	Trigonia ex gr. pullus Trigonia ex gr. pullus Sowerby 1826 clam
Lucinida - Lucinidae	Fimbria cf. lajoyei Fimbria cf. lajoyei d'Archiac 1843 clam
Pholadomyida - Pholadomyidae	Homomya cf. gibbosa, "Pholadomya somaliensis" = Pholadomya (Bucardiomya) somaliensis Homomya cf. gibbosa Sowerby 1814 clam "Pholadomya somaliensis" = Pholadomya (Bucardiomya) somaliensis Cox 1935 clam
Pholadida - Ceratomyidae	Ceratomya cf. concentrica Ceratomya cf. concentrica Sowerby 1822 clam
Megalodontida - Dicerocardiidae	Pseudisocardia cf. macfadyeni Pseudisocardia cf. macfadyeni Cox 1935 clam
Rhynchonellata
Terebratulida - Lobothyrididae	Tubithyris chouberti Tubithyris chouberti Rousselle 1965
Terebratulida - Lissajousithyrididae	Monsardithyris ventricosa Monsardithyris ventricosa Hartmann 1830
Echinoidea
Holectypoida - Holectypidae	Holectypus phelani Holectypus phelani sea urchin =phelani sp.