Family Trissocyclidae Goll 1968

Polycystinea - Nassellaria - Trissocyclidae

Parent taxon: Spyrida according to B. O'Conner 1994

See also Goll 1968

Sister taxa: none

Subtaxa: Acanthodesmia Cantharospyris Nephrospyris Phormospyris Tholospyris

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Distribution:

• NN21 of North Pacific (5 collections)

• Quaternary of North Pacific (49), Southern Ocean (1)

• Pliocene to Pleistocene of North Pacific (4)

• Pliocene of North Pacific (21), Southern Ocean (1)

• Miocene to Pliocene of North Pacific (1)

• Miocene of North Pacific (4), Southern Ocean (2)

• Oligocene of North Pacific (60)

• Eocene to Oligocene of North Pacific (32)

• Eocene of North Pacific (86), Peru (1), South Pacific (14)

• Jurassic of the Russian Federation (1)

Total: 282 collections including 300 occurrences

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