This fossil shows lobsters knew how to cuddle   MSNBC - March 13, 2012

Fossils of tiny lobsters nestled together in a seashell suggest the fearsome-looking crustaceans were sociable far earlier in their evolution than known. Modern clawless lobsters often cluster together for shelter, and fossils of extinct clawed lobsters found in Canada suggested these crustaceans might be found together in burrows about 70 million years ago. Now a 180-million-year-old seashell found in a rock quarry in southern Germany holds a trio of fossilized lobsters, suggesting that as menacing as the animals might seem, they have long known the value of cuddling up.

Ammonite diet revealed in X-rays   BBC - January 6, 2011

Ask someone to name their favorite fossils and the chances are they will point to the ammonites. These coiled remains of ancient squid-like creatures are in every child's rock collection. The animals were a big success, filling the oceans for 350 million years before going extinct with the dinosaurs. Now, exquisite X-ray images featured in Science magazine are providing new insights on how the ammonites lived and perhaps also on why they died out.

Geologist analyzes earliest shell-covered fossil animals   PhysOrg - October 22, 2009

Ancient Anthropods Used Borrowed Homes   Live Science - August 23, 2009

Some Mollusks Thrived After Permian Extinction   New York Times - August 27, 2009

Ancient Crayfish Fossils Unravel Evolution Mystery National Geographic - January 28, 2008
New fossils of ancient crayfish and their branching burrows provide the oldest evidence of crayfish in the Southern Hemisphere, experts say. The discovery in Australia of a 106-million-year-old crayfish fossil - and even older "trace fossils" of the animal's streamside burrows - help fill in a puzzling gap in the history of the small crustaceans.

Oldest Horseshoe Crab Fossil Discovered Live Science - January 28, 2008

When Bivalves Ruled The World Science Daily - September 1, 2007

Oldest Lobster Fossil Found in Mexico National Geographic - May 3, 2007

Ancient Creature Fossilized By The Bacteria That Ate It Science Daily - November 2004
High in the mountains of Antarctica, geologists unearthed the fossil remains of a 180-million-year-old clam-like creature that was preserved in a very unusual way: by the ancient bacteria that devoured it.

Ancient fossil penis discovered BBC - December 5, 2003

Scientists have identified the oldest male fossil animal yet discovered. It is an ocean-dwelling creature from 425-million-year-old rocks in the UK. "swimmer with a large penis"

Oldest hard-shelled fossil found BBC - June 28, 2002