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Ostracoda source details
Schallreuter, R. (1973). Die Ostracodengattung Hyperchilarina und das Aparchites-Problem. Geologiska Föreningen i Stockholm Förhandlingar. 95(1):37-49.
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10.1080/11035897309455423 [view]
Schallreuter, R.
1973
Die Ostracodengattung <i>Hyperchilarina</i> und das <i>Aparchites</i>-Problem
Geologiska Föreningen i Stockholm Förhandlingar
95(1):37-49
Publication
The genus Hyperchilarina — hitherto known only from North America — is fairly common in the Ordovician of Europe. A detailed description is given from published and new material. The most remarkable feature of the genus — the adventral row of spines on the smaller left valve — is considered as a homologon of the velum of the Palaeocopa. The hypothesis is stated that the main adventral structures of the Palaeocopa — the velum and the marginal structure — were originally structures of the contact margin, and an evolution model is given. Hyperchilarina is possibly identical with Aparchites. It seems that at least both belong to one family. The Aparchitacea are considered as a new sub-order (Leiocopa) on their own, beside the Palaeocopa, because of the missing antral and cruminal dimorphism and the original features of Hyperchilarina. In the course of the description, three new species are established.
Date action by
Aparchitacea Jones, 1901 † accepted as Aparchitoidea Ulrich & Bassler, 1923 † (new combination reference)
Leiocopa † (original description) |