| Bradyodonti Fossil range: Devonian |
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Bradyodonti is an order of cartilaginous fishes (class Chondrichthyes) that lived in the Paleozoic Era. The Devonian is a geologic period and system of the Paleozoic era spanning from to million years ago. The conservation status of a Species is an indicator of the likelihood of that species remaining extant either in the present day or the near future Chordates ( Phylum Chordata) are a group of Animals that includes the Vertebrates together with several closely related Invertebrates Vertebrates are members of the Subphylum Vertebrata, Chordates with backbones or spinal columns The grouping sometimes includes Chondrichthyes or cartilaginous fishes are jawed Fish with paired fins paired nostrils scales two-chambered hearts and skeletons made of Cartilage rather Cartilage is a type of dense Connective tissue. It is composed of specialized cells called chondrocytes that produce a large amount of extracellular matrix Fish are aquatic Vertebrate animals that are typically ectothermic (previously Cold-blooded) covered with scales, and equipped with two Chondrichthyes or cartilaginous fishes are jawed Fish with paired fins paired nostrils scales two-chambered hearts and skeletons made of Cartilage rather The Paleozoic or Palaeozoic Era (from the Greek palaio (παλαιο "old" and zoe (ζωη "life" meaning "ancient life" They first appeared toward the end of the Devonian Period, were present through the Carboniferous Period, and became extinct by the end of the Permian Period. The Devonian is a geologic period and system of the Paleozoic era spanning from to million years ago. The Carboniferous is a geologic period and system that extends from the end of the Devonian period about 359 The Permian is a geologic period and system that extends from 299
Most Bradyodonti fossils consist of jaws and teeth. These indicate that Bradyodonti ate mollusks and other shelled invertebrates. Molluscs are animals belonging to the phylum Mollusca. There are around 250000 extant Species within the phylum with an estimated 70000 An invertebrate is an Animal lacking a Vertebral column. The group includes 98% of all animal Species — all animals except those in the Chordate Their bodies were probably broad and flattened, like modern rays. Batoidea is a Superorder of cartilaginous fish containing more than 500 described species in thirteen families
"Bradyodonti" can also refer to the present-day Chimaera or ratfish of the order Chimaeriformes, which have an upper jaw fused to the braincase and a flap of skin covering the gill slits. Chimaeras are cartilaginous fish in the order Chimaeriformes.
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