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词条 Laudonia
释义

  1. Distribution

  2. References

For the region, see Lothian

{{Taxobox
|name = Laudonia
| fossil_range = late Lower Cambrian (Lower Olenellus-zone) {{Geological range|524|518.5}}[1]
|regnum = Animalia
|phylum = Arthropoda
|classis = Trilobita
| ordo = Redlichiida
| subordo = Olenellina
| superfamilia = Olenelloidea
| familia = "Laudoniidae"
| subfamilia = "Laudoniinae"[2][3]
|genus = Laudonia
| genus_authority = Harrington, 1956
| subdivision_ranks = species
| subdivision =
  • L. bispinata Harrington, 1956, (type)[2]
  • L. amputata Fritz, 1992[2]


}}

Laudonia is an extinct genus of trilobites that lived during the early part of the Botomian stage,[1] which lasted from approximately 524 to 518.5 million years ago. This faunal stage was part of the Cambrian Period. There are currently two named species assigned to it.

Distribution

  • L. bispinata has been collected from the Early Cambrian of Alberta (Lower Olenellus zone, Mural Formation, Mumm Peak Section, immediately west of Mumm Peak and north of Mount Robson Provincial Park, near Mural Glacier) and of British Columbia (Cinnamon Peak-Whitehorn Mtn. Section: Dyeran) Canada.[5])
  • L. amputata is found in the Early Cambrian of Alberta (Lower Olenellus zone, Mural Formation, Mumm Peak Section, immediately west of Mumm Peak and north of Mount Robson Provincial Park, near Mural Glacier).[5]
  • Laudonia sp. is mentioned from the Lower Cambrian of the Caborca Region, Mexico (Puerto Blanco Formation, Cerro Rajon).[6]

References

1. ^1 {{cite journal |last=Sepkoski |first=Jack |authorlink= |coauthors= |title=A compendium of fossil marine animal genera (Trilobita entry) |journal=Bulletins of American Paleontology |volume=364 |issue= |pages=560 |publisher= |location= |year=2002 |url=http://strata.ummp.lsa.umich.edu/jack/showgenera.php?taxon=307&rank=class |doi= |id= |accessdate=2008-01-12 |deadurl=yes |archiveurl=https://web.archive.org/web/20060905162524/http://strata.ummp.lsa.umich.edu/jack/showgenera.php?taxon=307&rank=class |archivedate=2006-09-05 |df= }}
2. ^1 2 {{cite journal|last1= Lieberman|first1=B. S.|year=1999|title=Systematic Revision of the Olenelloidea (Trilobita, Cambrian)|journal=Bulletin of the Peabody Museum of Natural History|volume=45|url=http://archive.peabody.yale.edu/scipubs/bulletins_postillas/ypmB45_1999.pdf}}
3. ^{{cite journal|last=Lieberman|first=B.S.|year=1998|title=Cladistic Analysis of the Early Cambrian Olenelloid Trilobites|journal=Journal of Paleontology|volume=72|issue=1|pages=59–78|url=http://invitestock.free.fr/Cambrien/pdf/Spanish%20fauna/Cladistic%20Analysis%20of%20the%20Early%20Cambrian%20Olenelloid%20Trilobites.pdf}}
4. ^http://www.westerntrilobites.com/Species/L.prima.htm
5. ^1 W. H. Fritz. 1992. Walcott's Lower Cambrian Olenellid trilobite collection 61k, Mount Robson Area, Canadian Rocky Mountains. Geological Survey of Canada Bulletin 432 (432)1-66
6. ^J. Stewart, M. A. S. McMenamin, and J. M. Morales-Ramirez. 1984. Upper Proterozoic and Cambrian rocks in the Caborca Region, Sonora, Mexico - physical stratigraphy, biostratigraphy, paleocurrent studies, and regional relations. U. S. Geological Survey Professional Papers (1309)1-33
{{Taxonbar|from=Q6497901}}{{Redlichiida-stub}}

4 : Cambrian trilobites of North America|Paleozoic life of Alberta|Paleozoic life of British Columbia|Olenelloidea
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