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A new Early Miocene species of Ophiocrossota (Ophiuroidea) from Southern Patagonia, Argentina

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Abstract:

The first South American species of CLARK, 1928, n. sp., is described, extending the known geographical range of the genus to Argentina. The new species is characterized by its large radial shields, proximally in contact within, but separated distally by the triangular plates, and by its large and elongate oral shields, that cover most of the interradial area.

German
Die erste südamerikanische Art von Ophiocrossota CLARK, 1928 wird beschrieben, und ihre bekannte geografische Verbreitung damit bis nach Argentinien ausgedehnt. Die neue Art zeichnet sich aus durch ihre grossen Radialschilde, welche proximal in Kontakt, aber distal durch die dreieckigen Platten abgetrennt liegen und durch ihre grossen und länglichen Mundschilde, welche die Interradialfläche beinahe ganz bedecken.

Keywords: ARGENTINA; CHENQUE FORMATION; MIOCENE; OPHIOCROSSOTA KOLLEMBERGORUM; OPHIUROIDEA

Document Type: Research Article

DOI: https://doi.org/10.1127/0077-7749/2007/0245-0147

Publication date: 2007-08-01

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