Wadi Milaha, Jebel Hagab (Modiolus Beds) (Triassic of the United Arab Emirates)

Where: United Arab Emirates (25.8° N, 56.1° E: paleocoordinates 6.1° S, 42.8° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Sumra Formation, Norian (228.0 - 208.5 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified, shelly/skeletal, brown wackestone and lithified, yellow, calcareous shale

• These are mainly thin-bedded, brown weathering, shelly limestones, and reddish-purple, yellow or brown marly shales, closely interbedded. There are also occasional massive fine-grained limestones.

Size class: macrofossils

Collected by R. G. S. Hudson in 1951; reposited in the BMNH

Primary reference: R. G. S. Hudson and R. P. S. Jefferies. 1961. Upper Triassic brachiopods and lamellibranchs from the Oman Peninsula, Arabia. Palaeontology 4(1):1-41 [D. Bottjer/C. Powers/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 41201: authorized by David Bottjer, entered by Catherine Powers on 08.07.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

• corals also present
Show authors, comments, and common names
Bivalvia
 Mytilida - Mytilidae
Modiolus speciosus, Modiolus jaworskii, Modiolus omanensis n. sp.
Modiolus speciosus Merla 1933 mussel
Modiolus jaworskii Wanner and Knipscheer 1951 mussel
Modiolus omanensis n. sp. Hudson and Jefferies 1961 mussel
 Pectinida - Pectinoidae
Indopecten clignetti
Indopecten clignetti Boehm 1906 scallop
asperior subsp. nov.
 Pectinida - Limidae
Pseudolimea ? cumaunica
Pseudolimea ? cumaunica Bittner 1899 file clam
 Ostreida - Cassianellidae
Cassianella cf. subeuglypha
Cassianella cf. subeuglypha Krumbeck 1913 oyster
 Ostreida - Ostreidae
Lopha blanfordi
Lopha blanfordi Lees 1928 oyster
 Pholadida - Pleuromyidae
Pleuromya himaica
Pleuromya himaica Diener 1908 clam
 Megalodontida - Megalodontidae
? Megalodon rostratiforme
? Megalodon rostratiforme Krumbeck 1913 clam
 Cardiida - Anthracosiidae
"Anodontophora griesbachi" = Unionites griesbachi, "Anodontophora cf. lettica" = Unionites letticus
"Anodontophora griesbachi" = Unionites griesbachi Bittner 1899 clam
"Anodontophora cf. lettica" = Unionites letticus Quenstedt 1852 clam
 Cardiida - Palaeocarditidae
Palaeocardita buruca, Palaeocardita trapezoidalis
Palaeocardita buruca Boehm 1906 clam
Palaeocardita trapezoidalis Krumbeck 1913 clam
trapezoidalis
 Cardiida - Cardiidae
Protocardia rhaetica
Protocardia rhaetica Merian 1853 cockle
 Thraciida - Thraciidae
Thracia proavita n. sp.
Thracia proavita n. sp. Hudson and Jefferies 1961 clam
 Trigoniida - Myophoriidae
Costatoria omanica, Costatoria ? vestitaeformis
Costatoria omanica Diener 1908 clam
Costatoria ? vestitaeformis Krumbeck 1923 clam
 Nuculida - Nuculidae
"Nuculopsis misolensis" = Palaeonucula misolensis
"Nuculopsis misolensis" = Palaeonucula misolensis Jaworski 1915 nut clam
Rhynchonellata
 Athyridida - Diplospirellidae
Misolia noetlingii
Misolia noetlingii Bittner 1899
 Rhynchonellida - Allorhynchidae
Hagabirhynchia arabica n. gen. n. sp.
Hagabirhynchia arabica n. gen. n. sp. Jefferies 1961