Jebel Billum IV-13 (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)

• 27-30 m below top

• bed-level stratigraphic resolution

Environment/lithology: marine; shale

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 2604: authorized by Mark Patzkowsky, entered by Karen Layou on 09.07.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

Gastropoda
 Architaenioglossa - Ampullinidae
"Ampullospira sp." = Ampullina (Ampullospira)
"Ampullospira sp." = Ampullina (Ampullospira) Harris 1897 snail
 Heterostropha - Nerinellidae
? Nerinella sp. Sharpe 1849 snail
originally entered as "?Nerinella sp."
Bivalvia
 Arcida - Parallelodontidae
Parallelodon sp. Meek and Worthen 1866 clam
 Pectinida - Limidae
Plagiostoma sp. Sowerby 1814 file clam
 Pectinida - Pectinoidae
cf. Spondylopecten subpunctatus scallop
originally entered as "Spondylopecten cf. subpunctatus"
cf. Eopecten aubreyi scallop
originally entered as "Eopecten cf. aubreyi"
 Ostreida - Pteriidae
? Pteroperna sp. Lycett 1850 pearl oyster
originally entered as "?Pteroperna sp."
 Ostreida - Pinnidae
Trichites sp. Lhuyd 1760 oyster
few
Stegoconcha sp. Böhm 1907 oyster
few - originally entered as "Stegochoncha sp."
 Ostreida - Palaeolophidae
? Actinostreon sp. Bayle 1878 oyster
originally entered as "?Actinostreon sp."
 Ostreida - Gryphaeidae
"Nanogyra fourtaui" = Nanogyra (Nanogyra) nana Sowerby 1822 oyster
originally entered as "Nannogyra fourtaui"
Gryphaea balli Stefanini 1925 oyster
 Ostreida - Eligmidae
Eligmus aualites Stefanini 1925 oyster
 Mytilida - Mytilidae
cf. Modiolus bipartitus Sowerby 1818 mussel
originally entered as "?Modiolus cf. bipartitus"
 Pholadomyida - Pholadomyidae
"Bucardiomya aubreyi" = Pholadomya (Bucardiomya) clam
 Pholadida - Ceratomyidae
cf. Ceratomya wimmisensis Gillieron 1886 clam
originally entered as "Ceratomya cf. wimmisensis"
 Megalodontida - Ceratomyopsidae
 Cardiida - Arcticidae
 Trigoniida - Trigoniidae
Trigonia sp. Bruguière 1789 clam
Rhynchonellata
 Rhynchonellida - Tetrarhynchiidae
Somalirhynchia sp. Weir 1925
originally entered as "Somalirynchia sp."
cf. Somalirhynchia africana Weir 1925
originally entered as "Somalirynchia cf. africana"
 Terebratulida - Loboidothyrididae
"cf. Arapsopleurum arabicum" = Arabatia arabica, "Arabicella ovalis" = Arabatia bihinensis, "Arapsopleurum rotundum" = Arabatia rotunda, "Arabicella arabis" = Arabatia, ? Stiphrothyris sp.
"cf. Arapsopleurum arabicum" = Arabatia arabica Cooper 1989
originally entered as "Arapsopleurum cf. arabicum"
"Arabicella ovalis" = Arabatia bihinensis Weir 1929
"Arapsopleurum rotundum" = Arabatia rotunda Cooper 1989
"Arabicella arabis" = Arabatia
? Stiphrothyris sp. Buckman 1917
originally entered as "?Stiphronthyris sp."
 Terebratulida - Terebratulidae
"Arapsothyris angustata" = Arapsothyris magna
"Arapsothyris angustata" = Arapsothyris magna Cooper 1989