Remarks on the Problematic Fossil Xenusion Auerswaldae
作者:
Hermann Jaeger,
Anders Martinsson,
期刊:
Geologiska Föreningen i Stockholm Förhandlingar
(Taylor Available online 1967)
卷期:
Volume 88,
issue 4
页码: 435-452
ISSN:0016-786X
年代: 1967
DOI:10.1080/11035896709455501
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Xenusion auerswaldaePompeckj 1927 is refigured and redescribed. Some details which have hitherto been neglected or incorrectly interpreted are discussed. It is shown that each of its paired, hump-like protuberances was provided with a spine or papilla. This fact, as well as the relative size and apparent rigidity of the humps, disproves the earlier interpretations of these details as ventral (coxal) sacs. The specimen described by Pompeckj is a cast of the dorsal side of the fossil.Xenusionwas an almost homonomously metameric animal with appendages similar to onychophoran lobopodia; the fossilized characters known hitherto permit no more exact classification thanincertae sedisamong the Articulata. Red-striped quartzites in the lowermost Cambrian of the Kalmarsund area in SE Sweden are the only rocks which may now be considered as the source of the drift boulders containing the two specimens ofXenusionfound hitherto.
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