Lower and Middle Jurassic ammonoids of the Shemshak Group in Alborz, Iran, and their palaeobiogeographical and biostratigraphical importance

Journal article


Publication Details

Author(s): Seyed-Emami K, Fürsich F, Wilmsen M, Majidifard MR, Shekarifard A
Journal: Acta Palaeontologica Polonica
Publisher: Polska Akademia Nauk
Publication year: 2008
Volume: 53
Journal issue: 2
Pages range: 237-260
ISSN: 0567-7920
eISSN: 1732-2421
Language: English


Abstract


The Shemshak Group at Shahmirzad (northern Iran) is characterized by the most frequent and extensive marine intercalations and contains the most abundant and diverse ammonite faunas hitherto known from the Lower and lower Middle Jurassic strata of the Alborz Range. So far, 62 ammonite taxa have been recorded from this area, including 25 taxa from earlier studies. The taxa belong to the families Cymbitidae, Echioceratidae, Amaltheidae, Dactylioceratidae, Hildoceratidae, Graphoceratidae, Hammatoceratidae, Erycitidae, and Stephanoceratidae with the new species Paradumortieria elmii and Pleydellia (P.?) ruttneri. The fauna represents the Late Sinemurian, Late Pliensbachian, Toarcian, Aalenian, and Early Bajocian. Palaeobiogeographically, it is closely related to the Northwest European (Subboreal) Province, and exhibits only minor relations with the Mediterranean (Tethyan) Province.



FAU Authors / FAU Editors

Fürsich, Franz Prof. Dr.
Naturwissenschaftliche Fakultät
Wilmsen, Markus PD Dr.
Naturwissenschaftliche Fakultät


External institutions with authors

University of Tehran


How to cite

APA:
Seyed-Emami, K., Fürsich, F., Wilmsen, M., Majidifard, M.R., & Shekarifard, A. (2008). Lower and Middle Jurassic ammonoids of the Shemshak Group in Alborz, Iran, and their palaeobiogeographical and biostratigraphical importance. Acta Palaeontologica Polonica, 53(2), 237-260. https://dx.doi.org/10.4202/app.2008.0206

MLA:
Seyed-Emami, Kazem, et al. "Lower and Middle Jurassic ammonoids of the Shemshak Group in Alborz, Iran, and their palaeobiogeographical and biostratigraphical importance." Acta Palaeontologica Polonica 53.2 (2008): 237-260.

BibTeX: 

Last updated on 2019-22-07 at 07:30