''Lawrenceoceras'' is a genus of moderately curved, gently expanding
bassleroceratids (Nautiloidia, Ellesmerocerida) from the Lower Ordovician of eastern North America. Septa dividing the chambers are close spaced; sutures straight, transverse; the siphuncle narrow, submarginal.
''Lawrenceoceras'' is closely related to nautiloids such as ''
Bassleroceras'' that gave rise to the
Tarphycerida although it specifically may not be ancestral.
References
* W.M.Furnish & Brian F. Glenister, 1964. Nautiloidea - Ellesmerocerida;
Treatise on Invertebrate Paleontology, Part K. Geological Society of America.
''Lawrenceoceras''i
Fossilworks
Prehistoric nautiloid genera
Ellesmerocerida
Paleozoic life of Quebec
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