''Plaesiomys'' is a
genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...
of extinct lamp shells belonging to the family
Plaesiomyidae
Plaesiomyidae is a family of extinct lamp shells belonging to the order Orthida.
Fossil record
Fossils of Plaesiomyidae are found in marine strata from the Ordovician until the Silurian
The Silurian ( ) is a geologic period and system spann ...
.
Fossil record
Fossils of ''Plaesiomys'' are found in marine strata of the
Ordovician
The Ordovician ( ) is a geologic period and System (geology), system, the second of six periods of the Paleozoic Era (geology), Era. The Ordovician spans 41.6 million years from the end of the Cambrian Period million years ago (Mya) to the start ...
(age range: from 466.0 to 443.7 years ago.) of Canada, China, Europe and United States.
Paleobiology Database
/ref>
Species
*†''Plaesiomys anticostiensis'' (Shaler, 1865)
*†''Plaesiomys bellistriatus'' Wang, 1949
*†''Plaesiomys carletona'' Twenhofel, 1928
*†''Plaesiomys fidelis'' Popov ''et al.'', 2000
*†''Plaesiomys iphigenia'' (Billings, 1865)
*†''Plaesiomys multiplicata'' Bancroft, 1945
*†''Plaesiomys porcata'' (McCoy, 1846)
*†''Plaesiomys proavitus'' Winchell and Schuchert, 1892
*†''Plaesiomys rockymontana'' Wilson, 1926
*†''Plaesiomys saxbiana'' Oraspold, 1959
*†''Plaesiomys subquadrata'' (Hall, 1847)
References
{{Taxonbar, from=Q24883856
Prehistoric brachiopod genera
Rhynchonellata
Paleozoic life of Ontario
Verulam Formation
Paleozoic life of British Columbia
Paleozoic life of Manitoba
Paleozoic life of the Northwest Territories
Paleozoic life of Nunavut
Paleozoic life of Quebec