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Fossil Record A palaeontological open-access journal of the Museum für Naturkunde
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Volume 13, issue 2
Foss. Rec., 13, 309–316, 2010
https://doi.org/10.1002/mmng.201000004
© Author(s) 2010. This work is distributed under
the Creative Commons Attribution 3.0 License.
Foss. Rec., 13, 309–316, 2010
https://doi.org/10.1002/mmng.201000004
© Author(s) 2010. This work is distributed under
the Creative Commons Attribution 3.0 License.

  01 Aug 2010

01 Aug 2010

A juvenile Early Carboniferous (Viséan) coelacanth from Rösenbeck (Rhenish Mountains, Germany) with derived postcranial characters

F. Witzmann, M. Dorka, and D. Korn F. Witzmann et al.
  • Museum für Naturkunde Berlin, Invalidenstraße 43, 10115 Berlin, Germany

Abstract. A small coelacanth specimen of Viséan age from a newly described locality near Rösenbeck at the northern margin of the Rhenish Mountains (North Rhine-Westphalia, Germany) is described. The head and pectoral girdle are not preserved, however, the specimen can be distinguished from all other known Carboniferous coelacanths by derived characters of the articulated postcranial skeleton. Derived characters include: (1) The slender first and second dorsal fins that carry only seven to eight and six fin rays, respectively. (2) Both the pelvic and anal fin have a broad base and are unusually weakly lobed. (3) The fin rays of the second dorsal fin are much more robust than those of the first dorsal fin. (4) The second dorsal and anal fins are longer than the first dorsal and pelvic fins. The Rösenbeck coelacanth is interpreted as a juvenile specimen, since the basal plates that support the fins are not ossified.

doi:10.1002/mmng.201000004

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