Spyroceratidae
Spyroceratidae are defined as Pseudorthocerida with uniformly slender siphuncle segments, longer than wide, that contract sharply near either end, in which endosiphuncular deposits first form a compete annulus before fusing ventrally.
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Spyroceratidae
Spyroceratidae are defined as Pseudorthocerida with uniformly slender siphuncle segments, longer than wide, that contract sharply near either end, in which endosiphuncular deposits first form a compete annulus before fusing ventrally.
has abstract
Spyroceratidae are defined as ...... nulus before fusing ventrally.
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kingdom
order (taxonomy)
phylum
Wikipage page ID
29,313,330
Wikipage revision ID
725,911,537
familia
Spyroceratidae
familia authority
Shimazu & Obata 1935
fossil range
M Silurian - Permian
subject
comment
Spyroceratidae are defined as ...... nulus before fusing ventrally.
@en
label
Spyroceratidae
@en
wasDerivedFrom
isPrimaryTopicOf
name
Spyroceratidae
@en