What is "allocotoceras"

Allocotoceras is an endocerid from the Lower Ordovician (upper Canadian) of Australia ( Tasmania), included in the Endoceratidae, based on small, straight or gently curved siphuncles.

Septal necks, according to Teichert, 1964, are holochoantic, reaching to the previous septum. Endocones are described as having a dorsal wedge, or process, making the internal opening, or endosiphocone, simicircular in cross section. In this sense Allocotoceras seems to resemble the genus Najaceras.