Creature Feature: Edestus

800px-Edestus_protopirata1DBWe will be continuing our prehistoric conversation from last week by discussing another cartilaginous fish that (as far as we can accurately determine) no longer roams the seas. Edestus is another ancient species whose descendants became the sharks we know and love today. There have been 14 species of Edestus identified by scientiests based on their distinctive teeth, but with there being so few remai
ns to study, these species are hard to differentiate.

Edestus were believe to be 20 feet long and lived during the late Carboniferous Period. This period spanned from 360 to 300 million years ago. As they do in modern-day sharks, Edestus’s teeth would rotate forward as the shark grew and aged, but they would not fall out of the mouth. Instead the teeth would push forward and protrude from its jaws, extending out of the mouth and even curling backwards!

Click here to read in detail about the unusual jaw construction and hypothesized predation habits of the fascinating Edestus.

Edited by KC O’Shea
Article Reference:
Edestus, the Strangest Shark? First Report from New Mexico, North American Paleobiogeography, and a New Hypothesis on its Method of Predation
Image: https://commons.wikimedia.org/wiki/File:Edestus_protopirata1DB.jpg
http://www.academia.edu/7781162/Edestus_the_Strangest_Shark_First_Report_from_New_Mexico_North_American_Paleobiogeography_and_a_New_Hypothesis_on_its_Method_of_Predation

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

%d bloggers like this: