Arandaspis
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| Fossil of Arandaspis prionotolepis from Natural History Museum in London | |
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†Arandaspis
Ritchie & Gilbert-Tomlinson, 1977
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| †Arandaspis prionotolepis Ritchie & Gilbert-Tomlinson, 1977
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Arandaspis prionotolepis is an extinct species of jawless fish that lived in the Ordovician period, about 480 to 470 million years ago. Its remains were found in Alice Springs, Australia in 1959, but it was not determined that they were the oldest known vertebrates until the late 1960s. Arandaspis is named after a local Aboriginal tribe, the Aranda (now currently called Arrernte).
Description
Arandaspis was about 15 cm (6 in) long, with a streamlined body covered in rows of knobbly armoured scutes. The front of the body and the head were protected by hard plates with openings for the eyes, nostrils and gills. It probably was a filter-feeder
It had no fins; its only method of propulsion was the use of its horizontally flattened tail. As a result, it probably swam in a fashion similar to a modern tadpole.[2]
See also
References
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