What baby ichthyosaurs ate


This video is called Sea Reptile Birth – Walking with Dinosaurs in HQ – BBC.

By Helen Thompson, 2:00am, October 3, 2017:

A baby ichthyosaur’s last meal revealed

As far as last meals go, squid isn’t a bad choice. Cephalopod remains appear to dominate the stomach contents of a newly analyzed ichthyosaur fossil from nearly 200 million years ago.

The ancient marine reptiles once roamed Jurassic seas and commonly pop up in England’s fossil-rich coast near Lyme Regis. But a lot of ichthyosaur museum specimens lack records of where they came from, making their age difficult to place.

Dean Lomax of the University of Manchester and his colleagues reexamined one such fossil. Based on its skull, they identified the creature as a newborn Ichthyosaurus communis. Microfossils of shrimp and amoeba species around the ichthyosaur put the specimen at 199 to 196 million years old, the researchers estimate.

Tiny hook structures stand out in the newborn’s ribs — most likely the remnants of prehistoric black squid arms. Another baby ichthyosaur fossil that lived more recently had a stomach full of fish scales. So the new find suggests a shift in the menu for young ichthyosaurs at some point in their evolutionary history, the researchers write October 3 in Historical Biology.

See also here. And here.

Advertisements

5 thoughts on “What baby ichthyosaurs ate

  1. Pingback: New ichthyosaur species discovery in England | Dear Kitty. Some blog

  2. Pingback: First Jurassic ichthyosaur discovery in India | Dear Kitty. Some blog

  3. Pingback: Ichthyosaur discovery in England | Dear Kitty. Some blog

  4. Pingback: Ichthyosaur discovery, one of largest animals ever | Dear Kitty. Some blog

  5. Pingback: Jurassic ichthyosaur was warm-blooded, new research | Dear Kitty. Some blog

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 )

Google+ photo

You are commenting using your Google+ 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 )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.