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Anomalocaris



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Blobrana


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Ancient predators had vision sharper than modern insects.

Armed with barbed grasping claws and a mouth full of tooth-like serrations, anomalocaridids are thought to have been the top predators in the Cambrian oceans about 500 million years ago. A cache of spectacular fossils now suggests that the ancient hunter Anomalocaris had compound eyes that gave it keener vision than many of the modern arthropods related to it.
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World's first super predator had remarkable vision

South Australian Museum and University of Adelaide scientists working on fossils from Kangaroo Island, South Australia, have found eyes belonging to a giant 500 million-year-old marine predator that sat at the top of the earth's first food chain.
This important story will be accompanied by an artist's impression of the super predator on the front cover of the 8 December 2011 issue of Nature.
Palaeontologists have discovered exceptionally preserved fossil eyes of the top predator in the Cambrian ocean from over 500 million years ago: the fearsome metre-long Anomalocaris.
The scientists show that the world's first apex predator had highly acute vision, rivalling or exceeding that of most living insects and crustaceans.
The international team behind this discovery includes two Adelaide researchers, Dr Michael Lee (SA Museum and University of Adelaide) and Dr Jim Jago (SA Museum and UniSA), and was led by Dr John Paterson (University of New England).
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Cambrian super-predators grew large in arms race

The Cambrian Period's most ferocious predator clung to life for 30 million years longer than was previously thought. Fossils from Morocco show that sea creatures known as anomalocaridids survived long after they had been understood to have gone extinct, and their bodies grew to lengths in excess of one metre.
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Scientists Discover Fossil of Giant Ancient Sea Predator

Paleontologists have discovered that a group of remarkable ancient sea creatures existed for much longer and grew to much larger sizes than previously thought, thanks to extraordinarily well-preserved fossils discovered in Morocco.
The creatures, known as anomalocaridids, were already thought to be the largest animals of the Cambrian period, known for the "Cambrian Explosion" that saw the sudden appearance of all the major animal groups and the establishment of complex ecosystems about 540 to 500 million years ago. Fossils from this period suggested these marine predators grew to be about two feet long. Until now, scientists also thought these strange invertebrates-which had long spiny head limbs presumably used to snag worms and other prey, and a circlet of plates around the mouth-died out at the end of the Cambrian.
Now a team led by former Yale researcher Peter Van Roy (now at Ghent University in Belgium) and Derek Briggs, director of the Yale Peabody Museum of Natural History, has discovered a giant fossilised anomalocaridid that measures one meter (more than three feet) in length.

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