Protocycloceratidae
Protcycloceratidae is an extinct family of slender, commonly annulate, members of the cephalopod order Ellesmerocerida that lived during the Early Ordovician. Protocycloceratidae, named by Kobayashi (1935), are characterized by transversely ribbed, elongate shells that may be straight or slightly curved, as to be either endogastric or exogastric. Although not universally accepted, Kröger and Mutvie (2005) revised the Protocycloceratidae to include only those ellesmerocerids that have straight transverse sutures and siphuncles with concave segments and thick connecting rings.
family
primaryTopic
Protocycloceratidae
Protcycloceratidae is an extinct family of slender, commonly annulate, members of the cephalopod order Ellesmerocerida that lived during the Early Ordovician. Protocycloceratidae, named by Kobayashi (1935), are characterized by transversely ribbed, elongate shells that may be straight or slightly curved, as to be either endogastric or exogastric. Although not universally accepted, Kröger and Mutvie (2005) revised the Protocycloceratidae to include only those ellesmerocerids that have straight transverse sutures and siphuncles with concave segments and thick connecting rings.
has abstract
Protcycloceratidae is an extin ...... crinoceratidae (Flower, 1964).
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class
order (taxonomy)
phylum
Wikipage page ID
25,960,088
Wikipage revision ID
726,659,862
familia
Protocycloceratidae
familia authority
Kobayashi, 1935
fossil range
Lower Ordovician
subdivision
subdivision ranks
subordo
Ellesmeroceratina
comment
Protcycloceratidae is an extin ...... ts and thick connecting rings.
@en
label
Protocycloceratidae
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