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Ivaldiceras, a new genus of heteromorphic ammonites from the Lower Aptian of southeast France
Author(s) -
Gérard Delanoy,
Cyril Baudouin,
Marc Boselli,
Emmanuel Penagé
Publication year - 2016
Publication title -
carnets de géologie (notebooks on geology)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.263
H-Index - 15
eISSN - 1765-2553
pISSN - 1634-0744
DOI - 10.4267/2042/60676
Subject(s) - aptian , genus , paleontology , zoology , geography , biology , cretaceous
New investigations in the Vocontian Lower Aptian deposits resulted in the discovery of very rare specimens of heteromorphic ammonites whose specific morphological and ornamental features have led to the erection of Ivaldiceras gen. nov. Represented by a very limited number of specimens this new genus consists of two species: I. baratteroi gen. & sp. nov. and I. divajeuensis gen. & sp. nov. The suprageneric position of the new genus is difficult to determine because of the poor preservation of its sutural elements and the incomplete state of the specimens. The genus is tentatively assigned to the Family Macroscaphitidae Hyatt, 1900, pending the study of better preserved material.

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