Jebel Billum II-2 (Jurassic to of Yemen)

Where: Wadi Hajar, Yemen (14.3° N, 48.5° E: paleocoordinates 12.0° S, 31.1° E)

• small collection-level geographic resolution

When: Billum Member (Naifa Formation), Oxfordian to Oxfordian (163.5 - 152.1 Ma)

• Jebel Billum II section

•Microthyridina beds, 4 m and 9 m above base

• group of beds-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 2586: authorized by Mark Patzkowsky, entered by Karen Layou on 09.07.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Arcida - Parallelodontidae
Indogrammatodon egertonianus Stoliczka 1865 clam
 Pectinida - Limidae
? Limaria sp. Link 1807 file clam
originally entered as "?Limaria sp."
 Pectinida - Pectinoidae
Camptonectes sp. Meek 1864 scallop
 Ostreida - Palaeolophidae
Actinostreon kindopeensis oyster
Actinostreon solitaria kindopeensis
 Ostreida - Gryphaeidae
Nanogyra fourtani oyster
originally entered as "Nannogyra fourtani"
? Deltoideum delta Smith 1817 oyster
originally entered as "?Deltoideum delta"
 Mytilida - Mytilidae
 Modiomorphida - Modiomorphidae
Colpomya sp. Ulrich 1893 clam
 Trigoniida - Trigoniidae
Trigonia sp. Bruguière 1789 clam
Rhynchonellata
 Rhynchonellida - Tetrarhynchiidae
cf. Somalirhynchia arabica Cooper 1989
originally entered as "Somalirhynchia cf. arabica"
Kallirhynchia sp. Buckman 1917
 Terebratulida - Zeilleriidae
Crinoidea
 Millericrinida - Millericrinidae
? Millericrinus sp. d'Orbigny 1840 Sea lily
originally entered as "?Millericrinus sp."
Echinoidea
 Euechinoidea - Hemicidaridae
aff. Pseudocidaris thurmanni Agassiz 1840 sea urchin
originally entered as "Pseudocidaris aff. thurmanni"