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Tardigrade anatomy [3]. Tardigrades have a short plump body with four pairs of hollow unjointed legs. Most range from 0.1 to 0.5 mm (0.004 to 0.02 in) in length, although the largest species may reach 1.3 mm (0.051 in).
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You are free: to share – to copy, distribute and transmit the work; to remix – to adapt the work; Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made.
The time frame of these molting stages vary from each tardigrade as it is dependent on the nutrition of the specific individual. [6] Once the molting stages are complete, the larva tardigrade attempts to find an ideal location to initiate ecdysis. Some eggs may be left in the discarded exuvia. [11]
Tardigrades, which are eight-legged micro-animals, are commonly referred to as water bears or moss piglets and are found all over the world in varying extreme habitats. First discovered in 1904 and originally named Hypsibius antarcticus , Acutuncus antarcticus is the most abundant tardigrade species in Antarctica.
Multipseudechiniscus raneyi is a species of tardigrade. It is the only species of Multipseudechiniscus, a genus within the family Echiniscidae. [1] The species was first described as Pseudechiniscus raneyi by Albert A. Grigarick, Franc Mihelčič & Robert O. Schuster in 1964. [2] It was placed in the new genus Multipseudechiniscus in 2011. [2]
Milnesium swolenskyi is a species of tardigrade from the Cretaceous period. [1] It, Beorn and Paradoryphoribius are the only known tardigrade genera in the fossil record. [2] The type specimen AMNH NJ-796 was found in Turonian New Jersey amber, from about 93.9 to 89.8 million years ago (mya).
Milnesium is a genus of tardigrades. [1] It is rather common, being found in a wide variety of habitats across the world. [2] It has a fossil record extending back to the Cretaceous, the oldest species found so far (M. swolenskyi) is known from Turonian stage deposits on the east coast of the United States. [3]