Chlupacaris dubia
| Chlupacaris dubia | ||||||||||
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| Temporal occurrence | ||||||||||
| Upper Ordovician | ||||||||||
| 458.4 to 453 million years | ||||||||||
| Locations | ||||||||||
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| Systematics | ||||||||||
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| Scientific name of the genus | ||||||||||
| Chlupacaris | ||||||||||
| van Roy , 2006 | ||||||||||
| Scientific name of the species | ||||||||||
| Chlupacaris dubia | ||||||||||
| van Roy , 2006 | ||||||||||
Chlupacaris dubia is an extinct species of arthropod from the order of the Aglaspidida from Morocco .
features
Chlupacaris dubia was a medium-sized aglaspidida with a highly domed head plate and a moderately convex trunk. The head plate was about twice as wide as long, with a rounded anterior margin and a finely defined glabellar area. The eyes were centrally located on the headstock and were connected by slightly raised bumps. The hypostome was likely conterminant and was egg-shaped with large lateral wings. The thorax consisted of 11 overlapping, posteriorly narrowing abdominal segments with weakly developed pleural spines. The tail spine was rather short and pointed.
etymology
The generic name is made up of Chlupac , in honor of Ivo Chlupáč , who worked in the field of arthropods and the Paleozoic of Bohemia, and the Latin word caris for shrimp. The specific epithet is the Latin word dubia , which means doubtful, questionable or uncertain. This refers to an earlier publication in which the fossil record was mentioned as a "possible Aglaspidida".
Location
The species was found in February 2000 about 11 km east of Erfoud , southeast Morocco, in the upper Tiouririne Formation. The holotype (NMS G.2005.103.1) and the only find of this kind is now in the National Museum of Scotland in Edinburgh .
Systematics
Chlupacaris dubia is the only member of the genus Chlupacaris and belongs to the order Aglaspidida ss . However, it differs from other Aglaspidida and Aglaspidida-like arthropods in the presence of a hypostome.
swell
literature
- P. van Roy: An aglaspidid arthropod from the Upper Ordovician of Morocco with remarks on the affinities and limitations of Aglaspidida . Transactions of the Royal Society of Edinburgh: Earth Sciences 96, 2006: 327-350. PDF
Individual evidence
- ^ J. Samuelsson, P. van Roy, M. Vecoli: Micropalaeontology of a Moroccan Ordovician deposit yielding soft-bodied organisms showing Ediacara-like preservation . Géobios 34, 2001: 365-373.