Euthycarcinoid
From Wikipedia, the free encyclopedia
| Euthycarcinoid Fossil range: Cambrian - Middle Triassic (210Ma)[1] |
||||
|---|---|---|---|---|
| Scientific classification | ||||
|
The Euthycarcinoids are a group of amphibious freshwater arthropods that until recently were only known from the Carboniferous onwards. A single Ordovician/Silurian individual was identified in the Tumblagooda sandstone in 1993;[2] a Devonian example was added from the Rhynie chert in 2003,[3] and most recently a specimen has been found from the Cambrian.[1] The organisms may have produced some varieties of Protichnites, the earliest arthropod trackways on land.
By the latest phylogenies, the organisms represent stem-group myriapods.[1]
|
Euchelicerata |
|||||||||||||||||||
|
|||||||||||||||||||
The organisms appear to have become extinct in the Triassic mass extinction.[4]
[edit] References
- ^ a b c Vaccari NE, Edgecombe GD, Escudero C (2004) Cambrian origins and affinities of an enigmatic fossil group of arthropods. Nature 430: 554-557.
- ^ McNamara, K.J.; Trewin, N.H. (1993). "A euthycarcinoid arthropod from the Silurian of Western Australia". Palaeontology 36: 319-335.
- ^ Anderson, L.I.; Trewin, N.H. (2003). "An Early Devonian arthropod fauna from the Windyfield cherts, Aberdeenshire, Scotland". Palaeontology 46 (3): 467-509.
- ^ Ian Anderson (17 August 1991). "Is Australian fossil the ancestor of all insects?". New Scientist magazine (1782): 15.
