Diploaspis casteri
| Diploaspis casteri | ||||||||||||
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| Temporal occurrence | ||||||||||||
| lower devon | ||||||||||||
| 419.2 to 393.3 million years | ||||||||||||
| Locations | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Diploaspis casteri | ||||||||||||
| Størmer , 1972 |
Diploaspis casteri is an extinct species from the order Chasmataspidida within the jaw-claw bearers (Chelicerata).
features
The prosoma is almost rectangular and ends in short lateral spines. The preabdomen is almost rectangular in shape, about the same size as the prosoma, with the widest point at the end of the second segment. The post abdomen tapers slightly towards the rear. The telson is rounded and ends in a small spike. In contrast to Diploaspis muelleri , the tubercles are completely absent in this species .
Locations
Specimens of the species were found near Alken on the Moselle in the district of Mayen-Koblenz , Rhineland-Palatinate in Germany .
Systematics
Diploaspis casteri is a member of the Diploaspididae family from the order Chasmataspidida . The first description was made by Leif Størmer in 1972, describing the two species Diaploaspis casteri and Heteroaspis novojilovi , which, however, are considered synonymous.
swell
literature
- M. Poschmann, LI Anderson, JA Dunlop: Chelicerate arthropods, including the oldest phalangiotarbid arachnid, from the early Devonian (Siegenian) of the Rhenish Massif, Germany . Journal of Paleontology 79 (1), 2005: 110-124. PDF
Individual evidence
- ^ L. Størmer: Arthropods from the Lower Devonian (Lower Emsian) of Alken an der Mosel, Germany. Part 2: Xiphosura . Senckenbergiana lethaea 53, 1972: 1-29.