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