Sholakoceras is an extinct nautiloid cephalopod from the Lower Permian

Permian

The PermianThe term "Permian" was introduced into geology in 1841 by Sir Sir R. I. Murchison, president of the Geological Society of London, who identified typical strata in extensive Russian explorations undertaken with Edouard de Verneuil; Murchison asserted in 1841 that he named his "Permian...

 of southern Russia, included in the Tainoceratacean family Rhiphaeoceratidae,(order Nautilida

Nautilida

The Nautilida constitute a large and diverse order of generally coiled nautiloid cephalopods that began in the mid Paleozoic and continues to the present with a single family, the Nautilidae which includes two genera, Nautilus and Allonautilus, with six species...

). The shell of Shalakoceras is evolute with a perforate (see through) umbilicus. Whorl sections are subquadrate with the ventral and lateral sides flattened and ventral and ubilical shoulders rounded. Lateral areas bear short, slightly oblique ribs. Suture

Suture

Surgical suture is a medical device used to hold body tissues together after an injury or surgery. It generally consists of a needle with an attached length of thread. A number of different shapes, sizes, and thread materials have been developed over its millennia of history.-History:Through many...

s form broad ventral saddles with a slight, shallow lobe, very shallow lateral lobes, and a deep funnel-shaped dorsal lobe.