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Diestoceras breviconum
Taxonomy
Orthoceras breviconum was named by Portlock (1843). It is not extant. Its type specimen is GSM 103467, a shell. Its type locality is Killey Bridge Fm. locality 1, NE of Pomeroy, which is in a Richmondian offshore mudstone/siltstone in the Killey Bridge Formation of the United Kingdom.
It was recombined as Diestoceras breviconum by Evans (1993).
It was recombined as Diestoceras breviconum by Evans (1993).
Sister species lacking formal opinion data