''Projovellania'' is an extinct nautiloid cephalopod belonging to the

oncocerid The Oncocerida comprise a diverse group of generally small nautiloid cephalopods known from the Middle Ordovician to the Mississippian (early Carboniferous; one possible member is known from the Early Permian), in which the connecting rings are ...

family

Jovellaniidae Jovellaniidae was established as a family within the Oncocerida to include genera characterized by longiconic orthocones and cyrtocones with a subtriangular to depressed cross-section in which the ventral (siphuncular) side is typically angular o ...

found in mid Silurian sediments in Europe. The shell is a longiconic cyrtocone, like that of ''

Jovellania ''Jovellania'' is a genus of extinct prehistoric nautiloids from the order Oncocerida known from the Lower Devonian of Europe (France, Germany).Sweet, W. C. (1964). "Nautiloidea -Oncocerida". '' Treatise on Invertebrate Paleontology''. Part K Nau ...

'' or '' Mixosiphonoceras'', except for being compressed rather than depressed.

References

* Sweet W.C. 1964. Nautiloidea-Oncocerida. Treatise on Invertebrate Paleontology, Part K. Geological Society of America and Univ. of Kansas press. Teichert & Moore, (eds) {{Taxonbar, from=Q7249501 Prehistoric nautiloid genera Oncocerida