MolluscaBase name details
Euorthoceras ignotum (Foerste, 1889) †
1884283 (urn:lsid:marinespecies.org:taxname:1884283)
accepted > unreplaced junior homonym (original binomen is an unreplaced junior homonym, of Orthoceras ignotum Barrande, 1868)
Species
Orthoceras (Euorthoceras) ignotum Foerste, 1889 † · unaccepted > superseded combination
Orthoceras ignotum Foerste, 1889 † · unaccepted > superseded combination (of Orthoceras ignotum Barrande,...)
of Orthoceras ignotum Barrande, 1868
marine, brackish, fresh, terrestrial
fossil only
(of Orthoceras (Euorthoceras) ignotum Foerste, 1889 †) Foerste, A. F. (1889). Notes on Clinton Group fossils, with special reference to collections from Indiana, Tennessee and Georgia. <em>Proceedings of the Boston Society of Natural History.</em> 34: 263-355.
page(s): 279, pl. 7, fig. 4 [details]
page(s): 279, pl. 7, fig. 4 [details]
Type locality contained in Indiana
type locality contained in Indiana [from synonym] [view taxon] [details]
MolluscaBase eds. (2026). MolluscaBase. Euorthoceras ignotum (Foerste, 1889) †. Accessed at: https://www.molluscabase.org/aphia.php?p=taxdetails&id=1884283 on 2026-05-29
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original description
(of Orthoceras (Euorthoceras) ignotum Foerste, 1889 †) Foerste, A. F. (1889). Notes on Clinton Group fossils, with special reference to collections from Indiana, Tennessee and Georgia. <em>Proceedings of the Boston Society of Natural History.</em> 34: 263-355.
page(s): 279, pl. 7, fig. 4 [details]
basis of record Frey R.C. (1995). Middle and Upper Ordovician nautiloid cephalopods of the Cincinnati Arch region of Kentucky, Indiana, and Ohio. <em>U.S. Geological Survey Professional Paper.</em> 1066:1-126., available online at https://doi.org/10.3133/pp1066p
page(s): 45 [details] Available for editors
[request]
page(s): 279, pl. 7, fig. 4 [details]
basis of record Frey R.C. (1995). Middle and Upper Ordovician nautiloid cephalopods of the Cincinnati Arch region of Kentucky, Indiana, and Ohio. <em>U.S. Geological Survey Professional Paper.</em> 1066:1-126., available online at https://doi.org/10.3133/pp1066p
page(s): 45 [details] Available for editors
[request]
Present Inaccurate Introduced: alien Containing type locality
