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Deltacephalaspis
Taxonomy
Deltacephalaspis was named by Eldredge and Ormiston (1979) [Sepkoski's age data: D Emsi-l D Emsi-u Sepkoski's reference number: 1106]. It is not extant.
It was assigned to Phacopida by Sepkoski (2002); and to Calmoniidae by Jell and Adrain (2002).
It was assigned to Phacopida by Sepkoski (2002); and to Calmoniidae by Jell and Adrain (2002).
Species lacking formal opinion data