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Orthonychia trirotundolobatum
Taxonomy
Platyceras trirotundolobatum was named by Talent and Philip (1956). It is not extant. Its type locality is Old Toongabbie Marble Quarry, Lower Quarry, Marble Creek, which is in a Siegen carbonate limestone in the Toongabble Limestone Formation of Australia.
It was recombined as Orthonychia trirotundolobatum by Tassell (1977), Wagner (2023).
It was recombined as Orthonychia trirotundolobatum by Tassell (1977), Wagner (2023).
Sister species lacking formal opinion data