| 词条 | Eleutherocentrus |
| 释义 |
|name = Eleutherocentrus |fossil_range = Late Arenig[1] |regnum = Animalia |phylum = Arthropoda |classis = Trilobita |ordo = |superfamilia = |genus = Eleutherocentrus }} Eleutherocentrus is an extinct genus from a well-known class of fossil marine arthropods, the trilobites. It lived during the later part of the Arenig stage of the Ordovician Period,[1] approximately 478 to 471 million years ago. References1. ^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= |page=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= }} {{Taxonbar|from=Q5359503}}{{proetida-stub}} 3 : Proetida genera|Ordovician trilobites|Fossils of the United States |
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