Figure. Two different arm suckers of Promachoteuthis sp. D. Left - Oblique view of sucker 10, left arm III. Right - Oral view of arm sucker found in a petri dish after examining the holotype. Note the truncate, "pseudoteeth" engraved on the inner horny ring. The outer ring on the right sucker has been damaged on its right side. The structure of the suckers is very similar to that of other species in the genus.
Promachoteuthis sp. D: Sucker SEMRichard E. Young and Michael Vecchione
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