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New Data on the Bajocian–Bathonian Parkinsoniidae (Ammonoidea, Perisphinctoidea)
Paleontological Journal ( IF 0.6 ) Pub Date : 2020-06-22 , DOI: 10.1134/s0031030120030107
V. V. Mitta , Ju. A. Bakaryukina

Abstract

Some structural features of the suture line of adult representatives of the family Parkinsoniidae are analyzed. It has been established that in the genera Caumontisphinctes, Pseudocosmoceras, Sokurella and most Rarecostites, the ventral lobe (V) is deeper than the first lateral lobe (U). On the contrary, in the microconchs of the later Rarecostites, as well as in the genera Parkinsonia and Oraniceras, lobe V is smaller than lobe U; in macroconchs they can be of approximately equal depth. Based on data on shell morphogenesis, ornamentation, and the chronostratigraphic succession of taxa, a phylogenetic scheme for the Parkinsoniidae, including Parkinsoniinae Buckman (genera Caumontisphinctes, Rarecostites, Parkinsonia, and Oraniceras), and Pseudocosmoceratinae Sasonov (genera Pseudocosmoceras and Sokurella), is proposed. The assignment of the genus Djanaliparkinsonia to the subfamily Garantianinae (Stephanoceratidae), based on similarity of the sutural outline, is confirmed.


中文翻译:

巴乔-巴松管虫科的新数据(Ammonoidea,Perisphinctoidea)

摘要

分析了Parkinsoniidae科的成人代表的缝合线的一些结构特征。已经确定,在CaumontisphinctesPseudocosmocerasSokurella和大多数Rarecostites属中,腹叶(V)比第一侧叶(U)更深。相反,在后来的稀有珊瑚的微海螺中,以及在帕金森氏奥拉尼切拉斯属中,瓣V小于瓣U;在大螺ch中,它们的深度可以大致相等。基于壳形态,纹饰,和门类的年代地层连续,对于Parkinsoniidae进化系统方案,包括Parkinsoniinae巴克曼数据(属CaumontisphinctesRarecostites扁轴木属,Oraniceras),和Pseudocosmoceratinae Sasonov(属PseudocosmocerasSokurella),提出了。基于缝合轮廓的相似性,确认了Djanaliparkinsonia属对Garantianinae(Stephanoceratidae)亚科的分配。
更新日期:2020-06-22
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