''Valhalloceras'' is a
genus of
nautiloid cephalopods found only in upper Lower Ordovician,
Arenigian
In geology, the Arenig (or Arenigian) is a time interval during the Ordovician period and also the suite of rocks which were deposited during this interval.
History
The term was first used by Adam Sedgwick in 1847 with reference to the "Arenig ...
,
carbonates on
Svalbard Island and
Jan Mayen Island. The type and only species so far named is ''Valhalloceras floweri'' Evans and King 1990.
''Valhalloceras'' is assigned to the
Oncocerida
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 t ...
, it and the related genus ''
Phthanoncoceras'' are united in the family
Phthanoncoceratidae.
References
''Valhalloceras floweri''in Fossilworks, 16 Oct 2014
*Jack Sepkoski, 2000
List of cephalopod genera
Prehistoric nautiloid genera
Ordovician cephalopods of Europe
Fossils of Svalbard
{{Paleo-nautiloid-stub