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Oelandiella , the earliest Cambrian helcionelloid mollusc from Siberia
Author(s) -
Gubanov Alexander P.,
Peel John S.
Publication year - 1999
Publication title -
palaeontology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.69
H-Index - 63
eISSN - 1475-4983
pISSN - 0031-0239
DOI - 10.1111/1475-4983.00070
Subject(s) - paleontology , synonym (taxonomy) , genus , geology , type species , type (biology) , alternation (linguistics) , zoology , biology , philosophy , linguistics
The helcionelloid molluscs Oelandiella korobkovi O. sibirica Vostokova are redescribed on the basis of type material from the lowest Cambrian of northern Siberia. Oelandiella is reinstated as a recognizable genus separated from Latouchella Cobbold, of which it has been considered generally to be a junior synonym, by differences in the prominent comarginal plication. The bilaterally symmetrical shells of both of these genera are readily delimited from Oelandia Westergård, originally described from the Middle Cambrian of Sweden, which has a characteristic asymmetrical alternation of plicae.