Open Access
How to translate text using browser tools
1 June 2004 First occurrence of Haugia cf. variabilis (d'Orbigny) (Ammonoidea) from the Lower Jurassic of the Uminoura area, western Kyushu, Japan
Ryoji Wani, Tohru Ohta, Hiromichi Hirano
Author Affiliations +
Abstract

Haugia cf. variabilis (d'Orbigny) has been found in the upper part of the Idenohana Formation in the Uminoura area, Kumamoto Prefecture. This species is originally known from the Upper Toarcian H. variabilis Subzone of the Lytoceras jurense Zone in western Europe. This occurrence combined with our analyses of the lithofacies and sequence stratigraphy suggests that the Idenohana Formation is conformably overlain by the Kyodomari Formation.

Ryoji Wani, Tohru Ohta, and Hiromichi Hirano "First occurrence of Haugia cf. variabilis (d'Orbigny) (Ammonoidea) from the Lower Jurassic of the Uminoura area, western Kyushu, Japan," Paleontological Research 8(2), 123-128, (1 June 2004). https://doi.org/10.2517/prpsj.8.123
Received: 17 December 2003; Accepted: 1 March 2004; Published: 1 June 2004
KEYWORDS
ammonoid
Haugia
Idenohana Formation
Kyodomari Formation
Uminoura
Upper Toarcian
Back to Top