ISSN:
1751-8369
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Geography
,
Geosciences
Notes:
Aristoptychites kolymensis (Kiparisova) is investigated and described in detail from collections made at Botneheia, Spitsbergen, where it occurs at the top of the Botneheia Formation (Daonella Shale). It is a rather small species and the stratigraphically highest representative of the genus in Spitsbergen. Its suture line is remarkable by its possession of the additional U.-lobes between the internal lobe and the first umbilical lobe. A lobe of this kind has so far been described only once, with Arcestes (Proarcestes) bicarinatus by Schindewolf (1968), which suggests affinities between Ptychitidae and Arcestidae.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1751-8369.1984.tb00486.x
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