Tarsopterella

Extinct genus of sea scorpions

Tarsopterella Temporal range: Early Devonian, 416–409.1 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Subphylum:	Chelicerata
Order:	†Eurypterida
Superfamily:	†Kokomopteroidea
Family:	†Hardieopteridae
Genus:	†Tarsopterella Størmer, 1951
Type species
Tarsopterella scotica (Woodward, 1872)

Tarsopterella is a genus of prehistoric eurypterid classified within the family Hardieopteridae. It contains only one species, T. scotica from the Lower Devonian of Scotland.^[1]

Description

Tarsopterella is distinguished by its prosoma (head), which is subrectangular and slightly concave in front, with small compound eyes. Its abdomen has pronounced lateral epimera (marginal spines similar to those of horseshoe crabs). Tarsopterella dates from the Lower Devonian period.^[2]

References

^ Dunlop, J. A., Penney, D. & Jekel, D. 2015. A summary list of fossil spiders and their relatives. In World Spider Catalog. Natural History Museum Bern, online at http://wsc.nmbe.ch , version 16.0 http://www.wsc.nmbe.ch/resources/fossils/Fossils16.0.pdf (PDF).
^ Størmer, L 1955. Merostomata. Treatise on Invertebrate Paleontology, Part P Arthropoda 2, Chelicerata, P38-P39.

Eurypterids

Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Chelicerata
Clade: Euchelicerata
Clade: Prosomapoda
Clade: Planaterga
Clade: Dekatriata
Clade: Sclerophorata

Taxonomy

Genera

List of eurypterid genera

Suborder
Stylonurina

Rhenopteroidea	Rhenopteridae
Stylonuroidea	Parastylonuridae Stylonuridae
Kokomopteroidea	Kokomopteridae Hardieopteridae
Mycteropoidea	Drepanopteridae Hibbertopteridae Mycteroptidae

Suborder
Eurypterina

Onychopterelloidea

Onychopterellidae

Moselopteroidea

Moselopteridae

Eurypteroidea

Infraorder
Diploperculata

Carcinosomatoidea	Carcinosomatidae Megalograptidae Mixopteridae
Waeringopteroidea	Waeringopteridae
Adelophthalmoidea	Adelophthalmidae
Pterygotioidea	Hughmilleriidae Slimonidae Pterygotidae