Madashon (Jurassic to of Somalia)

Where: Somalia (11.0° N, 49.0° E: paleocoordinates 12.3° S, 33.6° 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 93014: authorized by Wolfgang Kiessling, entered by Uta Merkel on 21.12.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

Rhynchonellata
 Terebratulida - Trigonithyrididae
Trigonithyris eruduwensis1 Muir-Wood 1935
 Terebratulida - Loboidothyrididae
Bihenithyris weiri n. sp.1 Muir-Wood 1935
Bihenithyris barringtoni n. gen. n. sp.1 Muir-Wood 1935
Sphaeroidothyris browni1 Muir-Wood 1935
 Rhynchonellida - Tetrarhynchiidae
Burmirhynchia cavagnarii1 Diaz-Romero 1931
Somalirhynchia tumida n. sp.1 Muir-Wood 1935
 Rhynchonellida - Septirhynchiidae
Septirhynchia madashonensis n. sp.1 Muir-Wood 1935
Bivalvia
 Pectinida - Pectinoidae
Camptonectes browni n. sp. Cox 1935 scallop
 Pectinida - Limidae
"Lima (Plagiostoma) harronis" = Plagiostoma harronis
"Lima (Plagiostoma) harronis" = Plagiostoma harronis Dacque 1905 file clam
 Ostreida - Eligmidae
Eligmus polytypus Eudes-Deslongchamps 1856 oyster
Eligmus weiri Cox 1935 oyster
 Ostreida - Gryphaeidae
Gryphaea costellata, "Ostrea (Liostrea) dubiensis" = Praeexogyra dubiensis
Gryphaea costellata Douvillé 1916 oyster
"Ostrea (Liostrea) dubiensis" = Praeexogyra dubiensis Contejean 1859 oyster
 Mytilida - Mytilidae
"Mytilus (Arcomytilus) laitmairensis" = Arcomytilus laitmairensis, "Mytilus (Modiolus) imbricatus" = Modiolus (Modiolus) imbricatus
"Mytilus (Arcomytilus) laitmairensis" = Arcomytilus laitmairensis de Loriol 1883 mussel
"Mytilus (Modiolus) imbricatus" = Modiolus (Modiolus) imbricatus Sowerby 1818 mussel
Demospongea
 Axinellida - Milleporellidae
"Milleporidium somaliense" = Steineria somaliensis2
"Milleporidium somaliense" = Steineria somaliensis2 Zuffardi-Comerci 1931 demosponge
Anthozoa
 Scleractinia - Stylinidae
Stylina lortphillipsi2 Gregory 1896 stony coral