Jebel Billum IV-9 (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: Shuqra Formation, Callovian (166.1 - 163.5 Ma)

• 17 m below top

• bed-level stratigraphic resolution

Environment/lithology: rubbly marl and limestone

• lithology described as rubbly marls and nodular limestones

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 2600: authorized by Mark Patzkowsky, entered by Karen Layou on 09.07.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Ammonitida - Pachyceratidae
"Erymnoceras jarryi" = Pachyerymnoceras jarryi
"Erymnoceras jarryi" = Pachyerymnoceras jarryi Douvillé 1912 ammonite
Gastropoda
 Pseudomelanoidea - Pseudomelaniidae
"Rhabdoconcha sp." = Pseudomelania (Rhabdoconcha)
"Rhabdoconcha sp." = Pseudomelania (Rhabdoconcha) snail
 Architaenioglossa - Ampullinidae
"Ampullospira sp." = Ampullina (Ampullospira)
"Ampullospira sp." = Ampullina (Ampullospira) Harris 1897 snail
 Opisthobranchia - Bullidae
Bulla sp. Linnaeus 1758 snail
Bivalvia
 Pectinida - Limidae
Plagiostoma ? harronis Dacque 1905 file clam
originally entered as "Plagiostoma ?harronis"
 Pectinida - Entoliidae
Entolium sp. Meek 1865 scallop
 Pectinida - Pectinoidae
cf. Eopecten aubreyi scallop
originally entered as "Eopecten cf. aubreyi"
 Ostreida - Gryphaeidae
"Nanogyra fourtaui" = Nanogyra (Nanogyra) nana Sowerby 1822 oyster
originally entered as "Nannogyra fourtaui"
Gryphaea balli Stefanini 1925 oyster
 Ostreida - Eligmidae
 Mytilida - Mytilidae
cf. Modiolus bipartitus Sowerby 1818 mussel
originally entered as "Modiolus cf. bipartitus"
 Lucinida - Mactromyidae
Mactromya sp. Agassiz 1843 clam
 Pholadomyida - Pholadomyidae
 Pholadida - Ceratomyidae
cf. Ceratomya pittieri de Loriol 1883 clam
originally entered as "Ceratomya cf. pittieri"
 Megalodontida - Ceratomyopsidae
 Cardiida - Arcticidae
 Cardiida - Cardiidae
cf. Tendagurium propebaneiana cockle
originally entered as "Tendagurium cf. propebaneiana"
Rhynchonellata
 Rhynchonellida - Tetrarhynchiidae
 Terebratulida - Terebratulidae