A new ammonite Geticeras gen. nov from the Lower Valanginian (Lower Cretaceous) of the Spiti Valley, Tethys Himalaya, India

作者：Pandey Bindhyachal; Pathak Deo Brat^*; Jaitly Anand Kumar

来源：Himalayan Geology, 2018, 39(1): 115-120.

• Ammonite
• Valanginian
• Giumal Formation
• Spiti Valley
• Tethys Himalaya

A new neocomitin ammonite taxon Geticeras getensis gen. et sp. nov. is systematically described from the poorly fossiliferous part of the Giumal Formation exposed near the village Gete, Spiti Valley, Tethys Himalaya, India. The characteristic ribbing of Geticeras, particularly on ventro-lateral shoulder and its tabulate venter, distinguish it from other genera of the Subfamily Neocomitinae. Based on the recent documentation of the globally spread ammonite genus Olcostephanus Neumayr from the same stratigraphic section, an Early Valanginian age is assigned to Geticeras gen. nov.

• 出版日期2018