Jebel Billum IV-10 (Jurassic of Yemen)

Where: Wadi Hajar, Yemen (14.3° N, 48.4° E: paleocoordinates 11.7° S, 31.2° E)

• small collection-level geographic resolution

When: Upper Member (Shuqra Formation), Callovian (166.1 - 163.5 Ma)

• 21-23 m below top (0-2 m above Nautiloid Bed)

• bed-level stratigraphic resolution

Environment/lithology: limestone

• lithology described as limestone

Size class: macrofossils

Primary reference: M. K. Howarth and N. J. Morris. 1998. The Jurassic and Lower Cretaceous of Wadi Hajar, southern Yemen. Bulletin of the Natural History Museum (Geology) 54(1):1-32 [M. Patzkowsky/K. Layou/A. Clement]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 2601: authorized by Mark Patzkowsky, entered by Karen Layou on 09.07.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

Crinoidea
 Millericrinida - Millericrinidae
? Angulocrinus sp. Rollier 1911 Sea lily
originally entered as "?Angulocrinus sp."
Echinoidea
 Salenioida - Acrosaleniidae
Rhynchonellata
 Rhynchonellida - Tetrarhynchiidae
cf. Somalirhynchia arabica Cooper 1989
originally entered as "Somalirhynchia cf.. arabica"
 Terebratulida - Loboidothyrididae
Bihenithyris sp. Muir-Wood 1935
Gastropoda
 Sorbeoconcha - Aporrhaidae
? Pietteia sp. Cossmann 1904 snail
originally entered as "?Pietteia sp."
Bivalvia
 Nuculida - Nuculidae
? Palaeonucula sp. Quenstedt 1930 nut clam
originally entered as "?Palaeonucula sp."
 Lucinida - Mactromyidae
Mactromya sp. Agassiz 1843 clam
 Pholadida - Ceratomyidae
cf. Ceratomya pittieri de Loriol 1883 clam
originally entered as "Ceratomya cf. pittieri"
 Megalodontida - Ceratomyopsidae
Tellurimya sp. n. sp. Cox 1964 clam
"?sp. nov." - originally entered as "Tellurimya ?sp. nov."
 Cardiida - Arcticidae
 Cardiida - Corbiculidae
? Eocallista krenkeli Cox 1935 clam
originally entered as "?Eocallista krenkeli"
 Mytilida - Mytilidae
 Ostreida - Palaeolophidae
 Ostreida - Eligmidae
Eligmus sp. Eudes-Deslongchampes 1856 oyster
Eligmus aualites Stefanini 1925 oyster
 Ostreida - Ostreidae
 Ostreida - Gryphaeidae
? Gryphaea balli Stefanini 1925 oyster
originally entered as "?Gryphaea balli"
"Nanogyra fourtaui" = Nanogyra (Nanogyra) nana Sowerby 1822 oyster
originally entered as "Nannogyra fourtaui"