What are promachoteuthis sulcus?

Promachoteuthis Sulcus

Promachoteuthis sulcus is a species of promachoteuthid squid. It is distinguished from related taxa on the basis of several morphological features: nuchal fusion between the head and mantle, much larger size of arm suckers compared to club suckers, greater width of tentacle base than arm base, a recessed club base, and the presence of an aboral tentacle groove.

Read more about Promachoteuthis Sulcus.

Some articles on promachoteuthis sulcus:

Promachoteuthis Sulcus
... Promachoteuthis sulcus is a species of promachoteuthid squid ... sulcus is known from a single specimen caught by the German research vessel R/V Walther Herwig in an open net off Tristan Da Cunha, southern Atlantic Ocean (36°49 ...