Tylopterella

Tylopterella
Temporal range: Ordovician–Upper Carboniferous
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Chelicerata
Order: Eurypterida
Family: incertae sedis
Genus: Tylopterella
Størmer, 1951

Tylopterella is a genus of prehistoric eurypterid which lived from the Ordovician to the Upper Carboniferous period. It is of uncertain taxonomic placement within the order Eurypterida.

Tylopterella is distinguishable by its small size, and its thick, partly calcareous exoskeleton with curved ridges of confluent tubercules and large knobs near the median line. Its prosoma (head) has a raised margin.[1]

One species may be recognised:

A second species, Tylopterella menneri (Novojilov, 1959), was described from Devonian of Talmyr, Russia; however, it was subsequently reinterpreted as a member of Chasmataspidida rather than a eurypterid, an assigned to a separate genus Dvulikiaspis.[2]

References

  1. Størmer, L. 1955. Merostomata. Treatise on Invertebrate Paleontology, Part P Arthropoda 2, Chelicerata, P34.
  2. David J. Marshall, James C. Lamsdell, Evgeniy Shpinev, Simon J. Bradd (2013). "A diverse chasmataspidid (Arthropoda: Chelicerata) fauna from the Early Devonian (Lochkovian) of Siberia". Palaeontology. in press. doi:10.1111/pala.12080.
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