Ophiuroidea;
microfossils;
fossil record;
new species;
Cenozoic;
ASSEMBLAGE;
D O I:
10.3390/taxonomy2020015
中图分类号:
Q94 [植物学];
学科分类号:
071001 ;
摘要:
The fossil record of the Ophiuroidea is still patchy, especially in the Cenozoic. Only four species have been described from the entire Oligocene, which is in stark contrast to the present-day diversity counting more than 2000 species. Here, we describe two new species of ophiuroid, Ophiura tankardi sp. nov. and Ophiodoris niersteinensis sp. nov., from the Lower Oligocene of the Mainz Basin. The species are based on microfossils extracted from the sieving residues of bulk sediment samples from a flush drill in Nierstein, Rhineland-Palatinate. The new species belong to extant genera and add to the poor Oligocene fossil record of the class. Based on present-day distributions, the occurrence of Ophiodoris suggests deep sublittoral to shallow bathyal palaeodepths for the Nierstein area of the Mainz Basin.
机构:
Geowissenschaftliches Zentrum, Universität Göttingen, D-37077 GöttingenGeowissenschaftliches Zentrum, Universität Göttingen, D-37077 Göttingen
Uffenorde H.
Radtke G.
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机构:
Hessisches Landesamt für Umwelt und Geologie, D-65203 Wiesbaden, KheingaustrGeowissenschaftliches Zentrum, Universität Göttingen, D-37077 Göttingen
机构:
Swedish Museum Nat Hist, Dept Invertebrate Zool, S-10405 Stockholm, SwedenSwedish Museum Nat Hist, Dept Invertebrate Zool, S-10405 Stockholm, Sweden
Stohr, Sabine
Cinar, Melih Ertan
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机构:
Ege Univ, Fac Fisheries, Dept Hydrobiol, TR-35100 Izmir, TurkeySwedish Museum Nat Hist, Dept Invertebrate Zool, S-10405 Stockholm, Sweden
Cinar, Melih Ertan
Dagli, Ertan
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机构:
Ege Univ, Fac Fisheries, Dept Hydrobiol, TR-35100 Izmir, TurkeySwedish Museum Nat Hist, Dept Invertebrate Zool, S-10405 Stockholm, Sweden