Rangea
| Rangea Temporal range: Ediacaran, 558–548 Ma | |
|---|---|
Scientific classification  | |
| Clade: | †Rangeomorpha |
| Genus: | †Rangea |
| Type species | |
| R. schneiderhoehoni Gurich 1929 | |
Rangea is a frond-like Ediacaran fossil with six-fold radial symmetry.[1][2] It is the type species of the rangeomorphs.
A total of six species have been described, but only the type species Rangea schneiderhoehoni is considered valid:
- R. brevior Gürich 1933 = R. schneiderhoehoni.
- R. arborea Glaessner et Wade, 1966 = Charniodiscus arboreus.
- R. grandis Glaessner et Wade, 1966 = Glassnerina grandis = Charnia massoni.
- R. longa Glaessner et Wade, 1966 = Charniodiscus longus.
- R. sibirica Sokolov, 1972 = Charnia sibirica = Charnia massoni.
Rangea schneiderhoehoni fossils has been found in the Kanies and Kliphoek Members of the Dabis Formation and in the Niederhagen Member of the Nudaus Formation, Namibia. This deposits dated around 548 Myr. Also, Rangea fossils has been reported from the Ediacaran deposits of Arkhangelsk region, Russia and in Australia. These fossils have an age around 558-555 Myr.[3][1][2]
Rangea seems to have rested upon the seabed.[1]
See also
References
- 1 2 3 Vickers-Rich, P.; Ivantsov, A. Y.; Trusler, P. W.; Narbonne, G. M.; Hall, M.; Wilson, S. A.; Greentree, C.; Fedonkin, M. A.; Elliott, D. A.; Hoffmann, K. H.; Schneider, G. I. C. (2013). "ReconstructingRangea: New Discoveries from the Ediacaran of Southern Namibia". Journal of Paleontology 87: 1. doi:10.1666/12-074R.1.
- 1 2 Ivantsov, A. Yu.; Leonov M. V. (2009). The imprints of Vendian animals - unique paleontological objects of the Arkhangelsk region (in Russian). Arkhangelsk. p. 91. ISBN 978-5-903625-04-8.
- ↑ Dzik, J. (2002). "Possible ctenophoran affinities of the precambrian "sea-pen" Rangea". Journal of Morphology 252 (3): 315–334. doi:10.1002/jmor.1108. PMID 11948678.
- Glaessner, Martin F.; Wade, Mary 1966: The late Precambrian fossils from Ediacara, South Australia. Palaeontology 9 (4), pp. 599-628.
- Gürich, Georg 1930: Uber den Kuibisquarzit in Sudwestafrika, Zeitschrift der Deutschen Geologischen Gesellschaft v.82: p.637.
This article is issued from Wikipedia - version of the Saturday, August 29, 2015. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.