''Minganoceras'' is a genus in the
oncocerid family,
Valcouroceratidae
The Valcouroceratidae is a family within the Oncocerida, nautiloid cephalopods from the middle and upper Ordovician, established by Rousseau Flower in 1945.
Diagnosis
Valcouroceratids are characterized by exogastric cyrtocones and brevicones tha ...
, named by Foeste, 1938, from the Middle Ordovician of Quebec, found on Mingan Island.
The shell of ''Minganoceras'' is a slender depressed exogastric cyrtocone, curved so that the underside, the venter, is longitudinally convex and the opposite side, the dorsum, is longitudinally concave. The venter is more narrowly rounded in section than the dorsum, a common feature of exogastric forms, including ''
Bassleroceras
''Bassleroceras'' is an elongate upwardly curved, exogastric, genus with the venter on the under side more sharply rounded than the dorsum on the upper. The siphuncle is ventral, composed of thick-walled tubular segments in which connection ring ...
'' and developed to a greater extreme in ''
Kindleoceras
''Kindleoceras'' is a genus of oncocerids belonging to the Valcouroceratidae, extinct nautiloid cephalopods that lived during the Middle and Late Ordovician.
''Kindleoceras'' is characterized by a gently curved or virtually straight shell, the ...
''. The siphuncle is cyrochoanitic with simple actinosiphonate deposits.
References
* Walter C Sweet, 1964. Nautiloidea-Oncocerida. Treatise on Invertebrate Paleontology Part K Mollusca 3. Geological Society of America and University of Kansas Press.
Minganoceras brief in Paleodb.
Prehistoric nautiloid genera
Oncocerida
{{paleo-nautiloidea-stub