Genus Eckhardites Mitta (Cardioceratidae, Ammonoidea) from the Lower Callovian of the subboreal Jurassic

被引:4
|
作者
Mitta, V. V. [1 ]
机构
[1] Russian Acad Sci, Inst Paleontol, Moscow 117997, Russia
关键词
genus Eckhardites; Cardioceratidae; Ammonoidea; Lower Callovian; subboreal Jurassic;
D O I
10.1134/S0031030109010055
中图分类号
Q91 [古生物学];
学科分类号
0709 ; 070903 ;
摘要
The genus Eckhardites Mitta 1999, with the type species Macrocephalites pavlowi Smorodina, 1928 is discussed and its diagnosis and assignment to the family Cardioceratidae are substantiated. Eckhardites is compared to the genus Macrocephalites Zittel (family Sphaeroceratidae), to which some workers presently assign the type species of Eckhardites. Three species of Eckhardites are recorded from the basal Callovian elatmae Zone of the Russian Platform, one of which (E. menzeli (Monnig)) was originally described from the synchronous beds in Germany. A new species E. dietli sp. nov. is described.
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页码:50 / 58
页数:9
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