Parastylonuridae

Parastylonuridae
Temporal occurrence
	Silurian
	443.4 to 419.2 million years
Locations
	North America; Europe;
Systematics
Sub-stem :	Jawbearers (Chelicerata)
Class :	Hip mouths (Merostomata)
Order :	Sea scorpions (Eurypterida)
Subordination :	Stylonurina
Superfamily :	Stylonuroidea
Family :	Parastylonuridae
Scientific name
	Parastylonuridae
	Waterston , 1979

Parastylonuridae is an extinct family of the suborder Stylonurina from the order of the sea scorpions (Eurypterida).

features

In the species from the Parastylonuridae family, the posterior margin of the metastoma was flattened or blunt. The prosomal limbs II to IV were prickly ( Hughmilleria but type), V and VI had no spines ( Parastylonurus - or pageA type).

Locations

Members of the Parastylonuridae family have been found in North America (state of Pennsylvania ) and Europe ( England and Scotland ).

Systematics

The family was established in 1979 by Charles D. Waterston . According to Lamsdell, Braddy & Tetlie 2010, it includes the following genera:

Parastylonurus
Stylonurella

The family is assumed to be paraphyletic .

swell

literature

James C. Lamsdell, Simon J. Braddy, O. Erik Tetlie: The systematics and phylogeny of the Stylonurina (Arthropoda: Chelicerata: Eurypterida) . In: Journal of Systematic Palaeontology . Volume 8, No. 1 , 2010, p. 49-61 , doi : 10.1080 / 14772011003603564 .

Individual evidence

^ ^A ^b Victor P. Tollerton Jr .: Mophology, Taxonomy, and Classification of the order Eurypterida Burmeister, 1843 . In: Journal of Paleontology . Volume 63, No. 5 , 1989, pp. 642-657 .
^ O. Erik Tetlie: Distribution and dispersal history of Eurypterida (Chelicerata) . In: Palaeogeography, Palaeoclimatology, Palaeoecology . Volume 252, 2007, pp. 557-574 , doi : 10.1016 / j.palaeo.2007.05.011 .
↑ Charles D. Waterston: Problems of functional morphology and classification in stylonuroid eurypterids (Chelicerata, Merostomata), with observations on the Scottish Silurian Stylonuroidea . In: Transactions of the Royal Society of Edinburgh, Earth Sciences . Volume 70, 1979, pp. 251-322 .

[Tollerton1989-1] A ^b Victor P. Tollerton Jr .: Mophology, Taxonomy, and Classification of the order Eurypterida Burmeister, 1843 . In: Journal of Paleontology . Volume 63, No. 5 , 1989, pp. 642-657 .

[Tetlie2007-2] O. Erik Tetlie: Distribution and dispersal history of Eurypterida (Chelicerata) . In: Palaeogeography, Palaeoclimatology, Palaeoecology . Volume 252, 2007, pp. 557-574 , doi : 10.1016 / j.palaeo.2007.05.011 .

[Waterston1979-3] Charles D. Waterston: Problems of functional morphology and classification in stylonuroid eurypterids (Chelicerata, Merostomata), with observations on the Scottish Silurian Stylonuroidea . In: Transactions of the Royal Society of Edinburgh, Earth Sciences . Volume 70, 1979, pp. 251-322 .