Search results
Results from the WOW.Com Content Network
Acipenseriformes / æ s ɪ ˈ p ɛ n s ə r ɪ f ɔːr m iː z / is an order of basal [1] ray-finned fishes that includes living and fossil sturgeons and paddlefishes (Acipenseroidei), as well as the extinct families Chondrosteidae and Peipiaosteidae. [2] [3] [4] They are the second earliest diverging group of living ray-finned fish after the ...
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.
Paddlefish (family Polyodontidae) are a family of ray-finned fish belonging to order Acipenseriformes, and one of two living groups of the order alongside sturgeons (Acipenseridae). [ 3 ] [ 4 ] They are distinguished from other fish by their elongated rostra , which are thought to enhance electroreception to detect prey.
Together these families compose the Acipenseriformes, an order of basal ray-finned fishes. [15] Paddlefish have a long fossil record dating back to the Early Cretaceous 125 million years ago. [ 16 ] American paddlefish are often referred to as primitive fish , or relict species , because of morphological characteristics that they retain from ...
Chondrostei is a subclass of non-neopterygian ray-finned fish.While the term originally referred to the paraphyletic grouping of all non-neopterygian ray-finned fish, it was redefined by Patterson in 1982 to be a clade comprising the Acipenseriformes (which includes sturgeon and paddlefish) and their extinct relatives.
The Acipenseriformes are ray-finned fishes in order Acipenseriformes. This category contains subcategories corresponding to the families in this order. Subcategories.
PETA is pitching an edible alternative to Punxsutawney Phil predicting the weather this upcoming Groundhog Day: A cake that when cut is blue or pink.
Acipenser oxyrinchus is a species with two subspecies: . Atlantic sturgeon, Acipenser oxyrinchus oxyrinchus Mitchill 1815.; Gulf sturgeon, Acipenser oxyrinchus desotoi Vladykov 1955.