Ussuniidae

Ussuniidae; Temporal range: Ordovician(Llandeilo–lower Caradoc) PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Clade:	Lophophorata
Phylum:	Brachiopoda
Class:	Craniata
Order:	† Trimerellida
Superfamily:	† Trimerelloidea
Family:	† Ussuniidae
Genera
	Ussunia

Last updated March 01, 2021

Ussuniidae is a monogeneric family of Ordovician brachiopods aligned with the Trimerellids, but showing additional similarities to the craniids and considered intermediate in morphology.^[2]^[3]

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References

↑ Williams, Alwyn; Carlson, S.J.; Brunton, C.H.C.; Holmer, L.E.; Popov, L.E.; Mergl, M.; Laurie, J.R.; Bassett, M.G.; Cocks, L.R.M.; Rong, J.-Y.; et al. (2000). Paul Selden (ed.). "Part H, Brachiopoda. Linguliformea, Craniiformea, and Rhynchonelliformea". Treatise on Invertebrate Paleontology. Geological Society of America.
↑ Gorjansky, Wladimir; Popov, Leonid (July 1986). "On the origin systematic position of the calcareous-shelled inarticulate brachiopods". Lethaia. 19 (3): 233–240. doi:10.1111/j.1502-3931.1986.tb00737.x.
↑ Williams, Alwyn; Carlson, S.J.; Brunton, C.H.C.; Holmer, L.E.; Popov, L.E.; Mergl, M.; Laurie, J.R.; Bassett, M.G.; Cocks, L.R.M.; Rong, J.-Y.; et al. (2000). Paul Selden (ed.). "Part H, Brachiopoda. Linguliformea, Craniiformea, and Rhynchonelliformea". Treatise on Invertebrate Paleontology. Geological Society of America.

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[1] Williams, Alwyn; Carlson, S.J.; Brunton, C.H.C.; Holmer, L.E.; Popov, L.E.; Mergl, M.; Laurie, J.R.; Bassett, M.G.; Cocks, L.R.M.; Rong, J.-Y.; et al. (2000). Paul Selden (ed.). "Part H, Brachiopoda. Linguliformea, Craniiformea, and Rhynchonelliformea". Treatise on Invertebrate Paleontology. Geological Society of America.

[2] Gorjansky, Wladimir; Popov, Leonid (July 1986). "On the origin systematic position of the calcareous-shelled inarticulate brachiopods". Lethaia. 19 (3): 233–240. doi:10.1111/j.1502-3931.1986.tb00737.x.

[3] Williams, Alwyn; Carlson, S.J.; Brunton, C.H.C.; Holmer, L.E.; Popov, L.E.; Mergl, M.; Laurie, J.R.; Bassett, M.G.; Cocks, L.R.M.; Rong, J.-Y.; et al. (2000). Paul Selden (ed.). "Part H, Brachiopoda. Linguliformea, Craniiformea, and Rhynchonelliformea". Treatise on Invertebrate Paleontology. Geological Society of America.

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