Desmoceratidae and Silesitidae (Ammonitida) from the Aptian-Albian of Antarctica

被引：3
|
作者：
Medina, Francisco A. [1 ]
Riccardi, Alberto C.
机构：
[1] Univ Buenos Aires, Fac Ciencias Exactas & Nat, Dept Ciencias Geol, RA-1428 Buenos Aires, DF, Argentina
[2] Natl Univ La Plata, Fac Ciencias Nat & Museo, Dept Paleozool Invertebrados, RA-1900 La Plata, Argentina
来源：
NEUES JAHRBUCH FUR GEOLOGIE UND PALAONTOLOGIE-ABHANDLUNGEN | 2006年 / 242卷 / 2-3期
关键词：
Ammonitida; Desmoceratidae; Puzosiinae; Silesitidae; Aptian; Albian; Antarctica;
D O I：
10.1127/njgpa/242/2006/289
中图分类号：
Q91 [古生物学];
学科分类号：
0709 ; 070903 ;
摘要：
Aptian-Albian Desmoceratidae and Silesitidae of James Ross Island, Antarctica are described. Desmoceratid Puzosiinae are represented by Parasilesites IMLAY, Pseudosilesites EGOIAN, Feruglioceras LEANZA, Umsinenoceras KENNEDY et al., and Silesitidae by species of Neoastieria EGOIAN, Piatnitzkyceras MEDINA & RICCARDI, and Sobraliceras gen. nov. On James Ross Island several assemblage zones are recognized: the Peltocrioceras assemblage zone (Upper Aptian) is characterized by Pseudosilesites russoi (LEANZA); the Ptychoceras assemblage zone (Lower Albian) by Ferughoceras piatnitzkyi LEANZA, Umsinenoceras sp. indet., U? sp. nov., Neoastieria antarcticaensis sp. nov., Piatnitzkyceras thomsoni sp. nov., Sobraliceras stoneleyi gen. et sp. nov. and S.? sp. nov.; the Aioloceras assemblage zone (Lower Albian) is characterized by Piatnitzkyceras cf. bonarellii MEDINA & RICCARDI, Umsinenoceras cardielense MEDINA & RICCARDI, U compressum sp. nov, Parasilesites jamesrossi sp. nov., P densicostatus sp. nov., and Sobraliceras robustum gen. et sp. nov.
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收藏
页码：289 / 327
页数：39
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