Biyo Dader Tug (Jurassic to of Somalia)

Where: Somalia (9.9° N, 43.6° E: paleocoordinates 11.8° S, 28.1° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Bihen Limestone Formation, Callovian to Callovian (166.1 - 157.3 Ma)

• 2 levels: lower Callovian unit and upper Argovian unit

• group of beds-level stratigraphic resolution

Environment/lithology: shallow subtidal; lithified limestone

Size class: macrofossils

Primary reference: L. R. Cox. 1935. Jurassic Gastropoda and Lamellibranchia. The Mesozoic Palaeontology of British Somaliland, Geology and Palaeontology of British Somaliland, II 148-197 [W. Kiessling/U. Merkel]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 93017: authorized by Wolfgang Kiessling, entered by Uta Merkel on 22.12.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

Rhynchonellata
 Rhynchonellida - Tetrarhynchiidae
Bivalvia
 Ostreida - Gryphaeidae
Gryphaea costellata Douvillé 1916 oyster
 Mytilida - Crenellidae
"Mytilus (Musculus) somaliensis" = Musculus somaliensis
"Mytilus (Musculus) somaliensis" = Musculus somaliensis Cox 1935 mussel
 Pholadida - Ceratomyidae
Ceratomya wimmisensis Gillieron 1886 clam
 Pholadomyida - Pholadomyidae
Pholadomya lirata, "Pholadomya (Homomya) inornata" = Homomya inornata
Pholadomya lirata Sowerby 1818 clam
"Pholadomya (Homomya) inornata" = Homomya inornata Sowerby 1837 clam
 Lucinida - Mactromyidae
Mactromya aequalis Agassiz 1843 clam
Gastropoda
 Stromboidea - Aporrhaidae
 Heterostropha - Bullinidae
"Cylindrites cf. striatus" = Sulcoactaeon striata
"Cylindrites cf. striatus" = Sulcoactaeon striata Lissajous 1923 snail