Euthycarcinoid

Euthycarcinoid

taxobox
fossil_range=Cambrian - Middle Triassic (210Ma)
regnum=Animalia
phylum=ArthropodaThe 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;cite journal
author = McNamara, K.J.
coauthors = Trewin, N.H.
year = 1993
title = A euthycarcinoid arthropod from the Silurian of Western Australia
journal = Palaeontology
volume = 36
pages = 319–335] a Devonian example was added from the Rhynie chert in 2003,cite journal
author = Anderson, L.I.
coauthors = Trewin, N.H.
year = 2003
title = An Early Devonian arthropod fauna from the Windyfield cherts, Aberdeenshire, Scotland
journal = Palaeontology
volume = 46
issue = 3
pages = 467–509
doi = 10.1111/1475-4983.00308] and most recently a specimen has been found from the Cambrian.Vaccari NE, Edgecombe GD, Escudero C (2004) Cambrian origins and affinities of an enigmatic fossil group of arthropods. Nature 430: 554-557.] 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.

The organisms appear to have become extinct in the Triassic mass extinction.cite journal|issue=1782 |journal= New Scientist magazine|title=Is Australian fossil the ancestor of all insects?|author=Ian Anderson|date=17 August 1991|pages=15|url=http://www.newscientist.com/article/mg13117822.800-science-is-australian-fossil-the-ancestor-of-all-insects.html]

References


Wikimedia Foundation. 2010.

Игры ⚽ Нужно решить контрольную?

Look at other dictionaries:

  • Tumblagooda sandstone — The Tumblagooda sandstone is a geological formation deposited during the Silurian or Ordovician periods, around four to five hundred million years ago, and is now exposed on the west coast of Australia, straddling the boundary of the Carnarvon… …   Wikipedia

  • Амплексус — Litoria xanthomera в амплексусе Амплексус (лат. amplexus объятие) форма псевдокопуляции наблюдаемая у …   Википедия

  • Rhynie chert — The Rhynie chert is an Early Devonian Lagerstättefound near the village of Rhynie, Aberdeenshire, Scotland, containing exceptionally preserved plant, fungus, lichen and animal material petrified in three dimensions by covering with fast setting… …   Wikipedia

  • Protichnites — is a genus of trace fossil consisting of the imprints made by the walking activity of arthropods. It is likely that more than one type of arthropod was responsible for these tracks. Euthycarcinoids, aglaspidids (see Aglaspida) and eurypterids are …   Wikipedia

  • Evolutionary history of life — Although evidence of early life is scarce and often difficult to interpret, it appears that life appeared on Earth relatively soon (on the geologic time scale) after the planet had cooled enough for liquid water to be present. The dominant theory …   Wikipedia

  • Protoichnites — is an ichnogenus describing arthropod trackways.cite journal author = McNamara, K.J. coauthors = Trewin, N.H. year = 1993 title = A euthycarcinoid arthropod from the Silurian of Western Australia journal = Palaeontology volume = 36 pages = 319… …   Wikipedia

  • Heimdallia — is an ichnogenus comprising a strange planar trace that does not have a circular cross section; its maker may have been fed upon by Beaconella .cite journal author = McNamara, K.J. coauthors = Trewin, N.H. year = 1993 title = A euthycarcinoid… …   Wikipedia

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”