English: (public domain photo provided by the American National Park Service)
Orconectes pellucidus (Tellkampf, 1844) - cave crayfish in Kentucky, USA.
The crustaceans are a large group of arthropods that inhabit marine, marginal marine, freshwater, and terrestrial habitats. The crustaceans include crabs, lobsters, shrimp, crayfish, barnacles, ostracods, and other organisms. The oldest fossil crustaceans are in the Cambrian. The group experienced a significant radiation in the oceans during the Mesozoic Marine Revolution.
Cave crayfish lack the dark-colored exoskeleton present in surface species. Instead, the exoskeleton is light-colored and translucent.
這幅圖片原始出處為Flickr的https://flickr.com/photos/47445767@N05/49921597292 ,作者為James St. John 。經機器人FlickreviewR 2在2024年4月22日審查後確定為採用Public Domain Mark的協議授權使用。
2024年4月22日
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Cave crawdad (Orconectes pellucidus) in Mammoth Cave, KY