Search results
Results from the WOW.Com Content Network
Acipenser is a genus of sturgeons.With 17 living species (others are only known from fossil remains), it is the largest genus in the order Acipenseriformes.The genus is paraphyletic, containing all sturgeons that do not belong to Huso, Scaphirhynchus, or Pseudoscaphirhynchus, with many species more closely related to the other three genera than they are to other species of Acipenser.
Fossil of the †chondrosteid †Strongylosteus hindenburgi, Tübingen Fossil of the †peipiaosteid †Yanosteus longidorsalis, MHNT The living polyodontid Polyodon spathula (American paddlefish) The living acipenserid Acipenser ruthenus (sterlet) The living acipenserid Pseudoscaphirhynchus kaufmanni (false shovelnose sturgeon)
The Siberian sturgeon (Acipenser baerii) is a species of sturgeon in the family Acipenseridae.It is most present in all of the major Siberian river basins that drain northward into the Kara, Laptev and East Siberian Seas, including the Ob, Yenisei (which drains Lake Baikal via the Angara River) Lena, and Kolyma Rivers.
The shortnose sturgeon (Acipenser brevirostrum) is a small and endangered species of North American sturgeon. The earliest remains of the species are from the Late Cretaceous Period, over 70 million years ago. [ 5 ]
The lake sturgeon (Acipenser fulvescens), also known as the rock sturgeon, [7] is a North American temperate freshwater fish, one of about 25 species of sturgeon. Like other sturgeons, this species is a bottom feeder and has a partly cartilaginous skeleton, an overall streamlined shape, and skin bearing rows of bony plates on the sides and back.
[3] [4] The Sakhalin sturgeon (Acipenser mikadoi), which lives in the Amur River basin in China and Russia, and the green sturgeon (A. medirostris), which lives along the Pacific coast of North America, are two different species of sturgeon. Despite their geographical isolation, these two species may have had a recent common ancestor due to the ...
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
The Japanese sturgeon or Amur sturgeon (Acipenser schrenckii) is a species of fish in the family Acipenseridae found in the Amur River basin in China and Russia. Claims of its presence in the Sea of Japan need confirmation. [5] The species has 11–16 dorsal, 34–47 lateral, and 7–16 ventral scutes.