Troostoceras
Troostoceras is an actinoceratid Nautiloid with a cyrtoconic shell, otherwise similar to Actinoceras. The shell is slightly endogastric, curved such that the under or ventral side is longitudinally concave, tucked in. The siphuncle is ventral and is in contact with the shell wall. Segments begin small but expand during growth. Troostoceras has been found in the Middle Ordovician of eastern North America and Siberia and may be a variety of Actinoceras, along with Saffordoceras and Leurorthoceras
primaryTopic
Troostoceras
Troostoceras is an actinoceratid Nautiloid with a cyrtoconic shell, otherwise similar to Actinoceras. The shell is slightly endogastric, curved such that the under or ventral side is longitudinally concave, tucked in. The siphuncle is ventral and is in contact with the shell wall. Segments begin small but expand during growth. Troostoceras has been found in the Middle Ordovician of eastern North America and Siberia and may be a variety of Actinoceras, along with Saffordoceras and Leurorthoceras
has abstract
Troostoceras is an actinocerat ...... ffordoceras and Leurorthoceras
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family
kingdom
order (taxonomy)
phylum
Wikipage page ID
40,790,723
Wikipage revision ID
578,138,691
fossil range
Middle Ordovician
genus
genus authority
Foeste & Teichert 1930
subject
hypernym
comment
Troostoceras is an actinocerat ...... ffordoceras and Leurorthoceras
@en
label
Troostoceras
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