Diploaspididae
| Diploaspididae | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temporal occurrence | ||||||||||||
| middle Silurian to middle Devonian | ||||||||||||
| 433.4 to 382.7 million years | ||||||||||||
| Locations | ||||||||||||
| Systematics | ||||||||||||
|
||||||||||||
| Scientific name | ||||||||||||
| Diploaspididae | ||||||||||||
| Størmer , 1972 |
Diploaspididae is an extinct family in the order Chasmataspidida ( Chelicerata ).
features
Representatives of the Diploaspididae family were small Chasmataspididas with a semicircular, almost rectangular or square prosoma , a preabdomen consisting of curved segments , a tapering post-abdomen and a short telson .
Locations
Diploaspididae have been found in Europe ( Germany and Scotland ) and Russia .
Systematics
A synonym for Diploaspididae is Heteroaspididae Størmer, 1972 . There are currently six species in five genera:
-
Achanarraspis Anderson, Dunlop & Trewin, 2000
- Achanarraspis reedi Anderson, Dunlop & Trewin, 2000
-
Diploaspis Størmer, 1972
- Diploaspis casteri Størmer, 1972
- Diploaspis muelleri Poschmann, Anderson & Dunlop, 2005
-
Forfarella Dunlop, Anderson & Braddy, 1999
- Forfarella Mitchelli Dunlop, Anderson & Braddy, 1999
-
Loganamaraspis Tetlie & Braddy, 2004
- Loganamaraspis dunlopi Tetlie & Braddy, 2004
-
Octoberaspis Dunlop, 2002
- Octoberaspis ushakovi Dunlop, 2002
swell
literature
- OE Tetlie, SJ Braddy: The first Silurian chasmataspid, Loganamaraspis dunlopi gen. Et sp. nov. (Chelicerata: Chasmataspidida) from Lesmahagow, Scotland, and its implications for eurypterid phylogeny . Transactions of the Royal Society of Edinburgh: Earth Sciences 94, 2004: 227-234. PDF