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Anomalocaris ("unlike other shrimp", or "abnormal shrimp") is an extinct genus of radiodont, an order of early-diverging stem-group marine arthropods.. It is best known from the type species A. canadensis, found in the Stephen Formation (particularly the Burgess Shale) of British Columbia, Canada.
The location of the state of Arkansas. Paleontology in Arkansas refers to paleontological research occurring within or conducted by people from the U.S. state of Arkansas. The fossil record of Arkansas spans from the Ordovician to the Eocene. [1] Nearly all of the state's fossils have come from ancient invertebrate life. [1]
Fayetteville, Arkansas: The University of Arkansas Press. ISBN 978-1-68226-103-3. LCCN 2019000731. Robison, Henry W.; Buchanan, Thomas M. (1988). Fishes of Arkansas. Fayetteville, Arkansas: The University of Arkansas Press. ISBN 1-55728-001-0. "Aquatic Fish Report" (PDF). Arkansas Wildlife Action Plan. Little Rock: Arkansas Game and Fish ...
Many of the fossils were initially collected at the Burgess Shale in the 1980s and 1990s during excavations conducted under Desmond Collins, former Royal Ontario Museum curator of invertebrate ...
There were more than 13,000 lenses in the largest eyes, which were over 3 cm in diameter. The individual lenses were large, with some exceeding 335 μm in diameter, which was possibly an adaptation to seeing in low-light waters. [2] The oral cone was triradial with three large plates, with the plates being studded with numerous tubercules. [1]
Sebecids were terrestrial crocodiles, meaning they lived and hunted on land. Essentially, Barinasuchus was a land-dwelling predator that was the height of a man, weighed over 3,000 lbs, and was 25 ...
Arkansas (/ ˈ ɑːr k ən s ɔː / ⓘ AR-kən-saw [c]) is a landlocked state in the West South Central region of the Southern United States. [9] [10] It borders Missouri to the north, Tennessee and Mississippi to the east, Louisiana to the south, Texas to the southwest, and Oklahoma to the west.
The U.S. state of Arkansas is located in the central part of the country. This list is derived largely from the Herps of Arkansas website. [1] Conservation status is derived from NatureServe and represents the species' status within the state rather than their worldwide status. In Arkansas, there are 25 species of frog and toad, and 32 species ...