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Palaeoechinastacus : ウィキペディア英語版 | Palaeoechinastacus
''Palaeoechinastacus australianus'' is a species of freshwater crayfish known from Early Cretaceous fossils from Victoria, Australia. ==Specimens and stratigraphy== ''Palaeoechinastacus'' is known from one partial body fossil, which is the holotype, and has been deposited in the National Museum of Victoria in Melbourne as lot number NMV-P186041. Two specimens, each showing a single chela (claw) were deposited as lots NMV-P186042 and NMV-P186009, but are not part of the type series, and are therefore considered to be "hypotypes". The body fossils were collected in 1987 and 1989, but it is not known exactly who found them. In addition, a number of trace fossils of burrow-like structures were found in a similar geological setting, and may be related to ''Palaeoechinastacus''.
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