PBDB Collection

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

Where: Saudi Arabia (25.8° N, 45.3° E)

• Paleocoordinates: 4.7° S, 44.9° E (Wright 2013)

• coordinate stated in text

• outcrop-level geographic resolution

When: Hisyan Mb. Member (Dhruma Formation), Callovian (166.1 - 163.5 Ma)

Environment/lithology: lagoonal or restricted shallow subtidal; lithified, yellow claystone

• 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 48596: authorized by Franz Fursich, entered by Simone Hicks on 24.03.2005

Creative Commons license: CC0 (CC0)

Taxonomic list

Show authors, comments, and common names

Anthozoa
Scleractinia - Comoseridae	Chomatoseris jacobi Chomatoseris jacobi Alloiteau 1945 stony coral
Rhynchonellata
Terebratulida - Eudesiidae	"Eudesia cardioides" = Eudesia (Sphriganaria) cardioides "Eudesia cardioides" = Eudesia (Sphriganaria) cardioides Douvillé 1916
Terebratulida - Loboidothyrididae	"Cererithyris bihinensis" = Arabatia bihinensis "Cererithyris bihinensis" = Arabatia bihinensis Weir 1929
Bivalvia
Trigoniida - Trigoniidae	Trigonia ex gr. pullus Trigonia ex gr. pullus Sowerby 1826 clam
Pholadida - Ceratomyidae	Gresslya ex gr. gregaria, Ceratomya excentrica, Ceratomya cf. concentrica Gresslya ex gr. gregaria von Zieten 1833 clam Ceratomya excentrica Roemer 1836 clam Ceratomya cf. concentrica Sowerby 1822 clam
Pholadida - Pleuromyidae	Pleuromya cf. alduini Pleuromya cf. alduini Brongniart 1821 clam
Megalodontida - Dicerocardiidae	Pseudisocardia cf. macfadyeni Pseudisocardia cf. macfadyeni Cox 1935 clam
Megalodontida - Ceratomyopsidae	Ceratomyopsis cf. arabica Ceratomyopsis cf. arabica Cox 1935 clam
Cardiida - Cardiidae	Protocardia ex gr. hillanum, Protocardia cf. subhillanum Protocardia ex gr. hillanum cockle Protocardia cf. subhillanum cockle
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
Lucinida - Mactromyidae	Mactromya cf. concentrica Mactromya cf. concentrica clam
Lucinida - Lucinidae	Fimbria cf. lajoyei Fimbria cf. lajoyei d'Archiac 1843 clam
Carditida - Astartidae	Neocrassina ovata, "Astarte scytalis" = Seebachia (Eoseebachia) sowerbyana, Coelopis cf. lunata Neocrassina ovata clam "Astarte scytalis" = Seebachia (Eoseebachia) sowerbyana Holdhaus 1913 clam Coelopis cf. lunata clam
Arcida - Parallelodontidae	Parallelodon hirsonensis Parallelodon hirsonensis d'Archiac 1843 clam
Pectinida - Limidae	Plagiostoma cf. laeviusculum, "Plagiostoma rigidum" = Lima (Plagiostoma) rigida, Plagiostoma cf. subcardiiformis Plagiostoma cf. laeviusculum file clam "Plagiostoma rigidum" = Lima (Plagiostoma) rigida Sowerby 1815 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
Pectinida - Pectinoidae	Chlamys nattheimensis, Chlamys splendens, Chlamys cf. curvivarians, "Chlamys cf. textorius" = Chlamys textoria, Camptonectes laminatus, Eopecten inequistriatus Chlamys nattheimensis scallop Chlamys splendens Dollfus 1863 scallop Chlamys cf. curvivarians Dietrich 1933 scallop "Chlamys cf. textorius" = Chlamys textoria Schlotheim 1820 scallop Camptonectes laminatus Sowerby 1818 scallop Eopecten inequistriatus scallop
Ostreida - Eligmidae	Eligmus cf. analites Eligmus cf. analites oyster
Ostreida - Gryphaeidae	"Nanogyra cf. striata" = Nanogyra (Palaeogyra) virgula, "Nanogyra nana" = Nanogyra (Nanogyra) nana, Liostrea cf. hisingeri, Gryphaea bilobata, Gryphaea costellata, Bilobissa sublobata "Nanogyra cf. striata" = Nanogyra (Palaeogyra) virgula Deshayes 1831 oyster "Nanogyra nana" = Nanogyra (Nanogyra) nana Sowerby 1822 oyster Liostrea cf. hisingeri oyster Gryphaea bilobata Sowerby 1835 oyster Gryphaea costellata Douvillé 1916 oyster Bilobissa sublobata Deshayes 1830 oyster
Ostreida - Palaeolophidae	"Lopha cf. marshii" = Actinostreon marshi, "Lopha gregarea" = Actinostreon gregareum, "Lopha solitaria" = Actinostreon gregareum "Lopha cf. marshii" = Actinostreon marshi Sowerby 1814 oyster "Lopha gregarea" = Actinostreon gregareum Sowerby 1816 oyster "Lopha solitaria" = Actinostreon gregareum Sowerby 1816 oyster
Ostreida - Pinnidae	Trichites saussurei Trichites saussurei oyster
Mytilida - Mytilidae	Falcimytilus aff. suprajurensis, "Modiolus imbricatus" = Modiolus (Modiolus) imbricatus, Modiolus bipartitus, Arcomytilus somaliensis, Inoperna cf. sowerbyana Falcimytilus aff. suprajurensis Cox 1925 mussel "Modiolus imbricatus" = Modiolus (Modiolus) imbricatus Sowerby 1818 mussel Modiolus bipartitus Sowerby 1818 mussel Arcomytilus somaliensis mussel Inoperna cf. sowerbyana mussel
Nuculida - Nuculidae	"Nucula cf. cuneiformis" = Nucula (Palaeonucula) cuneiformis "Nucula cf. cuneiformis" = Nucula (Palaeonucula) cuneiformis Sowerby 1840 nut clam
Echinoidea
Irregularia -	Bothryopneustes orientalis Bothryopneustes orientalis sea urchin =orientalis orientalis=Echin.
Cidaroida - Rhabdocidaridae	Rhabdocidaris sp. Rhabdocidaris sp. Desor 1855 pencil urchin =n.sp.1