Thorlaksonius
Thorlaksonius is a genus of extinct cephalopods belonging to the order Belemnoidea. It existed during the Jurassic period, specifically in the Callovian and Oxfordian ages. This genus is characterized by its distinctive, elongated rostrum, which is the beak-like structure that extends beyond the phragmocone. It is known from fossils found in various parts of the world, including Europe, North America, and Asia.
Common Names
There are no widely accepted common names for Thorlaksonius.
Characteristics
Thorlaksonius is distinguished by the following key characteristics:
- Elongated rostrum with a slightly curved ventral surface
- Relatively small phragmocone, the chambered, cone-shaped shell
- Proostracum, the outer shell covering, which is often preserved in fossils
- Presence of a well-defined apical beak at the tip of the rostrum
Environments
Thorlaksonius inhabited a wide range of marine environments during the Jurassic period. They are commonly found in sediments that indicate open-ocean conditions, as well as in shallow-water environments.
References