Forfarella mitchelli

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Forfarella mitchelli
Temporal occurrence
lower devon
419.2 to 393.3 million years
Locations
Systematics
Superclass : True jawbearers (Euchelicerata)
Class : Hip mouths (Merostomata)
Order : Chasmataspidida
Family : Diploaspididae
Genre : Forfarella
Type : Forfarella mitchelli
Scientific name of the  genus
Forfarella
Dunlop , Anderson & Braddy , 1999
Scientific name of the  species
Forfarella mitchelli
Dunlop , Anderson & Braddy , 1999

Forfarella mitchelli is an extinct species from the order Chasmataspidida of the jaw-clawed bearers (Chelicerata).

features

The prosoma is almost rectangular, about 1.5 times as wide as long, and ends in short lateral spines. The preabdomen is almost trapezoidal and tapers backwards. The post-abdomen tapers backwards in a straight line to form a small, pointed telson . All 9 segments of the post abdomen are of the same length.

etymology

The only specimen of this type was discovered in the collection of the British Natural History Museum with the inscription " Forfarella mitchelli Waterston " (without a year). It comes from the collection of the hobby collector Mitchell, on which the specific epithet mitchelli is based, who lived near Forfar , where the generic name Forfarella comes from. Since no publication could be found by Charles Waterston on this fossil , the species was not described until 1999 and the manuscript name was retained.

Location

The specimen was found in Lower Old Red Sandstone (LORS) near Arbroath , County Angus , Scotland .

Systematics

Forfarella mitchelli is a member of the Diploaspididae family from the order Chasmataspidida .

swell

literature

  • JA Dunlop, LI Anderson, Simon J. Braddy: A new chasmataspid (Chelicerata: Chasmataspida) from the Lower Devonian of the Midland Valley of Scotland . Transactions of the Royal Society of Edinburgh: Earth Sciences 89, 1999: 161-165. PDF