Search

Search

Showing results for "All"
Filter

Content type

Article Type

Topics

Tags

Color illustration of an ancient bivalve.
slideshow

Rudist Reefs

 About 100 million years ago, during the heyday of the dinosaurs, reefs were built...
Fri, 12/04/2009 - 14:25
Only 2,000 individuals of the endangered short-tailed albatross remain after the species was hunted for its feathers in the 1940s.
Photo

Short-tailed Albatross

 In the 1940s the short-tailed albatross population plummeted from tens of millions...
Once common in the West Indies, the Black Capped Petrel (Pterodroma hasitata), which breeds in high Caribbean mountains, is now on the endangered species list.
Photo

Black-Capped Petrel

 Once common in the West Indies, the Black Capped Petrel (Pterodroma hasitata),...
Color illustration of an ancient bivalve.
Photo

Elevator Rudists

 These "elevator" rudists, an ancient bivalve, used one long heavy valve to anchor...
Notice the pink tentacles, which “recliners” used to filter feed.
Photo

Recliner Rudists

 Where ocean currents were strong, ancient rudist “recliners” lay unattached on...
Rudist clams are mollusks that went extinct about 65 million years ago.
Photo

Rudist Clams

 Rudist clams are mollusks that went extinct about 65 million years ago. They were...