The genera Hysteroceras Hyatt and Dipoloceras Hyatt (Ammonoidea) in the Upper Albian of Patagonia, Argentina

Authors
Medina, FA Martinioni, D
Citation
Fa. Medina et D. Martinioni, The genera Hysteroceras Hyatt and Dipoloceras Hyatt (Ammonoidea) in the Upper Albian of Patagonia, Argentina, AMEGHINIANA, 36(4), 1999, pp. 411-418
Citations number
62
Categorie Soggetti
Earth Sciences
Journal title
AMEGHINIANA
ISSN journal
00027014 → ACNP
Volume
36
Issue
4
Year of publication
1999
Pages
411 - 418
Database
ISI
SICI code
0002-7014(1999)36:4<411:TGHHAD>2.0.ZU;2-5
Abstract
The ammonite genera Hysteroceras Hyatt and Dipoloceras Hyatt are described from Patagonia for the first time. Three species are recognized from the Ri o Mayer Formation in Estancia La Vega, including Hysteroceras leanzai sp, n ov., Dipoloceras elegans Haas and Dipoloceras cristatum (Brongniart). Compa rison with species from the Albian of Europe, Africa and Madagascar confirm ed the early Late Albian age of the part of the Rio Mayer Formation in whic h they occur.