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- Title
A new brittle star from the early Carboniferous of Poland and its implications on Paleozoic modern-type ophiuroid systematicsa.
- Authors
THUY, BEN; KTHUYUTSCHER, MANFRED; PŁACHNO, BARTOSZ J.
- Abstract
The fossil record of Paleozoic ophiuroids includes a number of forms which share striking similarities with modern relatives in terms of skeletal morphology. These so called modern-type Paleozoic ophiuroids yield an enormous potential for a better understanding of ophiuroid evolution, yet the scarcity of accurate and sufficiently detailed morphological descriptions available to date precludes any further-reaching assessments. Here, we describe an articulated ophiuroid specimen from the Late Tournaisian (early Carboniferous) of Czatkowice quarry, southern Poland, as a new species Aganaster jagiellonicus sp. nov. The good preservation of the specimen allowed for a morphological analysis at a level comparable to recent ophiuroid descriptions. It shows remarkable morphological similarities with extant former ophiolepidids Ophiomusium and Ophiosphalma. The new find thus contributes to a solid basis for future investigations on the position of the modern-type Paleozoic ophiuroid in the phylogeny of the class.
- Subjects
POLAND; OPHIURIDA; CARBONIFEROUS paleogeography; PALEOZOIC paleoecology; ANIMAL morphology
- Publication
Acta Palaeontologica Polonica, 2015, Vol 60, Issue 4, p923
- ISSN
0567-7920
- Publication type
Article
- DOI
10.4202/app.00093.2014