Forfarella mitchelli
| Forfarella mitchelli | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temporal occurrence | ||||||||||||
| lower devon | ||||||||||||
| 419.2 to 393.3 million years | ||||||||||||
| Locations | ||||||||||||
|
||||||||||||
| Systematics | ||||||||||||
|
||||||||||||
| 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