Other examples of fossils being dating much older than previously thought include:
Australopithecus (ape thought to be ancestral to humans) dated 4 million years older than previously thought ( Link ).
Platypus dating 40 million years older than previously thought (to 120 Ma) pushing the first appearance of mammals back to the time of the dinosaurs ( Link ).
A block of amber (fossil resin) encasing an extinct, stingless bee (Proplebeia dominicana) carrying a clump of orchid pollen on its back shows that these "masterpieces" among flowers appeared sometime between 76 million and 84 million years ago, much earlier than previously believed. ( Link ).
Orb-weaving spiders arrived during the Jurassic period, not the Cretaceous period, making them about 100 million years older than has been believed, the Times of London reported Wednesday ( Link ).
Ants 40 million years older than previously thought ( Link ).
Animal fossils associated with the Ediacaran Period (635 to 543 million years ago) have been found in sediments that date squarely in the Proterozoic Eon, 1.6 billion years ago - a billion years older than previously thought ( Link ).
The phylogenetic group of crustaceans includes nearly 100,000 species, including relatively big creatures such as prawns, lobsters and crabs, but also smaller specimens such as sea fleas and bay barnacles. In geological terms, the group is as much as 480 million years old; some rare fossils even belong to the late Cambrian and date as far back as 505 million years ago. The new fossil is part of the Lower Cambrian and is no doubt the oldest representative of modern crustaceans ( Link ).
Crayfish were once thought to have originated about 140 million ears ago (compare with the oldest known lobster at 167 Ma; Link). Most researchers assumed that crayfish had descended from lobsters around that time and gradually made their way inland. However, Hasiotis has discovered 220-million-year-old specimens that are almost identical to modem ones. He thinks crayfish may be as much as 300 million years old. ( Link ).
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