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Delthyris rostrata

Rhynchonellata - Spiriferida - Delthyrididae

Taxonomy
Delthyris rostrata was named by Zieten (1830).

It was recombined as Spiriferina rostrata by Delance (1969).

Sister species lacking formal opinion data
D. elevatus, D. hudsoni, D. papilionis, D. scabra, D. magna