Research-paper
Discovery of the genus Erymnoceras from the Middle Callovian of Kachchh, Western India: Paleontological, stratigraphical and paleobiogeographical implications
Krishna, Jai; Thierry, Jacques
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Abstract
The pachyceratid ammonoid genus Erymnoceras is described and illustrated through a new species E. jumarensis from the late Middle Callovian sediments of Jumara dome, Kachchh, Western India. Stratigraphically, the discovery helps the identification of the standard coronatum Zone in Kachchh (an area of primary reference in the Eastern Tethys) and allows precise correlations with Western Europe. Paleobiogeographically, this is the southernmost occurrence of Erymnoceras from anywhere in the world, and significantly not only the first record from the Indian subcontinent, but the entire Indo-East-African faunal province on the South margin of the Tethys.