Dirab (Jurassic of Saudi Arabia)

Where: Saudi Arabia (24.5° N, 46.6° E: paleocoordinates 2.1° S, 34.2° E)

• coordinate stated in text

When: Hawtah Member (Hanifa Formation), Oxfordian (163.5 - 157.3 Ma)

Environment/lithology: platform or shelf-margin reef; argillaceous limestone

• "wide shallow shelf on the western passive margin of the Neo-Tethys Ocean on which carbonates accumulated"
• "argillaceous carbonate"

Size class: macrofossils

Primary reference: M. Zakhera, M. El-Hedeny, A. El-Sabbagh and S. Al Farraj. 2017. Callovian–Oxfordian bivalves from central Saudi Arabia: Systematic paleontology and paleobiogeography. Journal of African Earth Sciences 130:60-75 [W. Kiessling/A. Watson]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 234934: authorized by Wolfgang Kiessling, entered by Alissa Watson on 21.05.2024

Creative Commons license: CC BY (attribution)

Taxonomic list

• Bivalves, gastropods, brachiopods and corals are reported to be present.
Show authors, comments, and common names
Bivalvia
 Mytilida - Crenellidae
Musculus (Musculus) somaliensis
 Mytilida - Mytilidae
Arcomytilus laitmairensis, Modiolus (Modiolus) bipartitus
Arcomytilus laitmairensis de Loriol 1883 mussel
Modiolus (Modiolus) bipartitus Sowerby 1818 mussel
 Ostreida - Eligmidae
Eligmus rollandi
Eligmus rollandi Douvillé 1907 oyster
 Ostreida - Gryphaeidae
Liostrea multiformis, "Nanogyra nana" = Nanogyra (Nanogyra) nana
Liostrea multiformis Koch and Dunker 1837 oyster
"Nanogyra nana" = Nanogyra (Nanogyra) nana Sowerby 1822 oyster
 Ostreida - Palaeolophidae
Actinostreon erucum, Actinostreon marshi, Actinostreon gregareum
Actinostreon marshi Sowerby 1814 oyster
Actinostreon gregareum Sowerby 1816 oyster
 Pectinida - Limidae
"Limea (Pseudolimea) duplicata" = Pseudolimea duplicata
"Limea (Pseudolimea) duplicata" = Pseudolimea duplicata Sowerby 1814 file clam
 Pectinida - Pectinoidae
Eopecten velatus
Eopecten velatus Goldfuss 1833 scallop
 Megalodontida - Ceratomyopsidae
Ceratomyopsis ? arabica
 Pholadida - Ceratomyidae
Ceratomya striata
Ceratomya striata Sowerby 1815 clam
 Pholadomyida - Pholadomyidae
"Pholadomya (Pholadomya) inornata" = Homomya inornata, Pholadomya (Bucardiomya) lirata, Pholadomya (Pholadomya) deltoidea, Pholadomya (Pholadomya) socialis, Pholadomya (Bucardiomya) aubryi
"Pholadomya (Pholadomya) inornata" = Homomya inornata Sowerby 1837 clam