Top Ten: Extinct Sea Monsters (Part 4 of 5)
Leedsichthys, along with a number of other animals we have talked about in our "Top Ten: Extinct Sea Monsters:" Basilosaurus, Elasmosaurus, Dunkleosteus, Archelon, Megalodon, Tanystropheus, and, of course, Leedsichthys. Hesperornis is also on there, as well.
3-Foot "Shrimp" Discovered—Dominated Prehistoric Seas
Anomalocaridids (model pictured) grew a third longer and survived 30 million years longer than thought. Christine Dell'Amore National Geographic News Published May 27, 2011 Fossils of a meter-long (3.3-foot) prehistoric ocean predator have been found in southeastern Morocco. The specimens include the largest yet of its kind and suggests the spiny, somewhat shrimplike beasts dominated pre-dinosaur seas for millions of years longer than thought.
Ghosts of Planets Past: An Interview with Ron Blakey
The following images come from Ron Blakey's maps of the paleotectonic evolution of North America. This shows the land 510 million years ago, progressing from there—reading left to right, top to bottom—through the accretion and dissolution of Pangaea into the most recent Ice Age and, in the final image, North America in its present-day configuration.
The dinosaur Giganotosaurus carolinii, one of the world's largest terrestrial carnivores (along with Spinosaurus), reconstructed in the position where its fossilized bones were found, at the museum of Villa El Chocón, next to the hydroelectric dam of El Chocón, Neuquén Province, Argentina.