Wadi Qahza, Am5 Mbr [Amdeh Fm] (Ordovician of Oman)

Where: Oman (23.3° N, 58.5° E: paleocoordinates 27.1° S, 138.5° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Neseuretus tristani trilobite zone, Am5 Member (Amdeh Formation), Darriwilian (467.3 - 458.4 Ma)

• STRATIGRAPHIC RELATIONS: From the Amdeh Fm, which overlies the Hijam Dolomite Fm, and is overlain by the Saiq Fm. AGE: ?Dapingian–Darriwilian, Middle Ordovician; on the basis of chitinozoans; placed in Llanvirn to avoid orphaning. STRATIGRAPHIC POSITION: From the Am5 member. Identification of the trilobite Neseuretus tristani from

•Am5 in the Wadi Sarin area suggests close correlation with at least some part of the Hanadir Shale of Saudi Arabia, which has been tied into the Llanvirnian sections in Iberia and elsewhere in southern Europe (Fortey and Morris 1982; El-Khayal and Romano 1985) and which also supports an assignment to the Darriwilian (Lovelock et al. 1981; R. A. Fortey, unpublished data).

• bed-level stratigraphic resolution

Environment/lithology: coastal; lithified, coarse-grained sandstone

• ENVIRONMENT: Nearshore.
• SPECIFIC LITHOLOGY: Coarse-grained, angular sandstone. LITHIFICATION: Lithified, on the basis of figured specimens.

Size class: macrofossils

Collection methods: surface (in situ),

• COLLECTOR: Unknown. REPOSITORY: Oman Natural History Museum (ONHM).

Primary reference: I. J. Sansom, C. G. Miller, A. Heward, N. S. Davies, G. A. Booth, R. A. Fortey, and F. Paris. 2009. Ordovician fish from the Arabian Peninsula. Palaeontology 52(2):337-342 [A. Hendy/A. Hendy]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 90377: authorized by Austin Hendy, entered by Austin Hendy on 17.07.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for marine vertebrates, and including trace fossils and trilobites. NOMENCLATURE: Not an authoritative publication, and lacking species-level identifications, but with modern nomenclature.
Pteraspidomorpha
 Arandaspida - Arandaspididae
Protozoa
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