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Nautiloids with multiple paired muscle scars from Lower-Middle Ordovician of Baltoscandia
被引:32
|作者:
Kröger, B
Mutvei, H
机构:
[1] Humboldt Univ, Inst Palaontol, Museum Nat Kunde, D-10115 Berlin, Germany
[2] Swedish Museum Nat Hist, Dept Paleozool, SE-10405 Stockholm, Sweden
来源:
关键词:
cephalopods;
muscle system;
nautiloid phylogeny;
D O I:
10.1111/j.1475-4983.2005.00478.x
中图分类号:
Q91 [古生物学];
学科分类号:
0709 ;
070903 ;
摘要:
The number, outline and arrangement of muscle scars on the internal mould of the body chamber of five species of Early and Middle Ordovician nautiloids from Baltoscandia are described. The ellesmeroceratids Oelandoceras haelluddenense Foerste and Pictetoceras oliviae King have 9-10 pairs of muscle scars. The oncoceratid Phtanoncoceras ellipticum (Lossen), and Botellusoceras torpense gen. et sp. nov., order and family indeterminate, have eight and nine pairs of muscle scars, respectively. The tarphycerid Estonioceras imperfectum (Quenstedt) has four pairs of muscle scars.
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页码:781 / 791
页数:11
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