Eight new shellfish, including the oldest known spider crab lives in 1 million years ago, had discovered the fossil reef is located in northern Spain, scientists report remains.
The fossil was found in the Koskobilo abandoned quarry bay and other species of shrimp crab crustaceans (group A, including crab, shrimp and lobster). Two of the most famous old spider crab, naming Cretamaja grain and the Koskobilius postangustus age, than the previous record holder, said study author AdielKlompmaker in Florida, museum of natural history in Florida university postdoctoral researcher.
"Before the first one is from France and some millions of years young," Klompmaker told LiveScience, refers to the spider crab. "Therefore, it is quite impressive back the origin of the spider crab, known fossil found in Spain."
C. The grain of about 0.6 inches (15 mm) long, show distinct characteristics, shows that this is a spider crab, including two different thorn out platform (extended part of the carapace, or shell, in front of the eyes) and some pear shaped carapace. Spider crab fossil in the both sides still have the thorn in the front of the body. [ancient spider crab photos]
There they found shortly after the reef, these creatures life seems to have disappeared. "Something happened, leading to the region's coral reefs disappear environment, it may have a lot of decapod, living in the coral reefs," Klompmaker said. "There is no too much decapod called after the time in the area of coral reefs disappear, added:" Klompmaker, introduces in detail in the cretaceous research "magazine is the result of issue.
Team from the United States, the Netherlands and Spain's researchers, Klompmaker collect fossils, in 2008, 2009 and 2010 Koskobilo quarry.
"We go there in 2008, the first two hours found two new species," Klompmaker said in a statement. "This is a very amazing - it just didn't happen every day."
The new findings, about 36 shrimp crab in abandoned quarry already exists, it in the cretaceous period (145 million to 66 million years ago) decapod the most diverse region, one of Klompmaker said.
The researchers also found that the more diversified ancient decapod live in coral reef - they are feeding, mating and seek refuge - than other parts of the ocean.
"Klompmaker in electronic mail wrote," the study's main achievements, is one of shrimp crab shellfish is very rich coral reefs in the cretaceous period. "Coral existence seems to promote shrimp crab's biodiversity, as early as 1 million years ago, and may be served as for nursery form."
Last year, Klompmaker find crawfish fossil crowded together, is called a ammonite extinction mollusk shells. "Hug" lobster, in southern Germany found a quarry, it is suggested that these terrible forward-looking shellfish is a little male chauvinism, as long as one hundred and eighty million years ago, when small crustaceans animal life.
"This is the most ancient lobster in the fossil record gregarious behavior example - not just lobster, but the whole group decapod, including lobster, crab and shrimp:" Klompmaker, who is in the United States Kent state university, said at the time. "It tells us is that this type of behavior together, may be as early as in the crustaceans evolution is very useful."
There are still a few Klompmaker is a team, in the same quarry found a new soldier crab, named after Michael Jackson (Mesoparapylocheles michaeljacksoni), because it is found that side of the singer's death.



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