Where: Iran (33.3° N, 51.9° E: paleocoordinates 29.6° N, 41.2° E)
• coordinate estimated from map
• small collection-level geographic resolution
When: Nayband Formation, Alaunian (215.6 - 212.0 Ma)
• "Schiste et calcaire de Parsefid", upper limestone unit. The lower of these marly limestone units contains the ammonoid species Distichites tozeri Seyed-
•Emami, Arcestes sp., and Pinacoceras imperator Mojsisovics, indicating a late Middle Norian age (Alaunian 3). The upper limestone unit is rich in bivalves, including the taxon described in this study. Given the comparatively high sedimentation rates of the Nayband Formation, as indicated by the high thickness of sediments deposited in the late Middle Norian to Rhaetian time interval, the material examined here is assumed to be Alaunian 3 in age as well.
• bed-level stratigraphic resolution
Environment/lithology: shallow subtidal; lithified limestone
Size class: macrofossils
Preservation: cast
Collection methods: Repository: Bayerische Staatssammlung für Paläontologie und Geologie (BSPG)
Primary reference: M. Hautmann, B. Aghababalou, and L. Krystyn. 2011. An unusual Late Triassic nuculid bivalve with divaricate shell ornamentation, and the evolutionary history of oblique ribs in Triassic bivalves. Journal of Paleontology 85(1):22-28 [W. Kiessling/U. Merkel]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 106268: authorized by Wolfgang Kiessling, entered by Uta Merkel on 05.03.2011, edited by Matthew Clapham
Creative Commons license: CC BY (attribution)
Taxonomic list
Gastropoda | |
? Acilia basistriata n. sp.
? Acilia basistriata n. sp. Nützel et al. 2012 snail | |
Coelostylina conica Münster 1841 snail | |
Rhynchocerithium douglasi Nützel and Senowbari-Daryan 1999 snail | |
Protorcula iranica n. sp.
Protorcula iranica n. sp. Nützel et al. 2012 snail | |
? Teretrina sp. snail
? Carinathilda textilis Nützel and Senowbari-Daryan 1999 snail | |
"? Katosira lateplicata" = Camponaxis lateplicata
"? Katosira lateplicata" = Camponaxis lateplicata Klipstein 1843 snail | |
? Turbinidae indet. Rafinesque 1815 snail | |
? Teutonica natanzensis n. sp.
? Teutonica natanzensis n. sp. Nützel et al. 2012 snail | |
Bivalvia | |
Trigonucula (Gonionucula) aciloides n. sp. Hautmann et al. 2011 nut clam | |
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