Our Land is fraught with many mysteries yet to unravel. Recently, paleontologists from the University of Alberta and Yale universities have discovered the remains of an amazing crab who lived about 90 million years ago together with the dinosaurs. The discovery was unique and amazing — judging by the fossils of ancient crabs had signs as larvae and adults, and both were similar to other crustaceans animals. The discovery forced scientists to reconsider the definition of what makes crabs — crabs.
A new species of fossil crabs has received the name Callichimaera perplexa, which can be translated as “beautiful perplexing Chimera”. They were very tiny creatures with a length of about 1.6 centimeters and lived on the territory of modern USA and Canada. According to paleontologist Xavier Lucas, it’s surprising that despite its tiny size of ancient creatures preserved in such good condition.
The good condition of the fossils have allowed scientists to reconstruct the appearance of ancient crabs. Their main feature was the large and prominent eyes — this means that they kept the “kids” signs even in adulthood. Comparison of adult specimens of larvae in the science known as pedomorphism, and this phenomenon can be seen at modern animals such as the axolotl, cute pictures that have long been discussed in social networks.
Huge eyes of the ancient crabs were not protected, however, scientists believe that they have been functional and helped the animal to hunt prey and avoid predators.
We think that this animal swam freely in the water column. Maybe it moved during the day and hunt only in the dark, explained Xavier Luc.
For swimming crabs used lobe of the limb that for them is not typical. Such limb in ancient times was found only in sea Scorpions that went extinct 250 million years ago.
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