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  • Crossopterygian | Definition, Features, Evolution, Facts . . .
    Crossopterygian, (subclass Crossopterygii), any member of a group of primitive, lobe-finned, bony fishes believed to have given rise to the amphibians and all other land vertebrates They appeared at the beginning of the Devonian Period (about 416 million years ago) but are now represented by only
  • Sarcopterygii - Wikipedia
    Sarcopterygii ( ˌsɑːrkɒptəˈrɪdʒi aɪ ; from Ancient Greek σάρξ (sárx) 'flesh' and πτέρυξ (ptérux) 'wing, fin')—sometimes considered synonymous with Crossopterygii (κροσσός, krossós, 'fringe')—is a clade (traditionally a class or subclass) of vertebrate animals which includes a group of bony fish commonly referred to as lobe-finned fish
  • CROSSOPTERYGII :- STRUCTURE AND AFFINITIES - ZOOLOGYTALKS
    Crossopterygian, (subclass Crossopterygii), any member of a group of primitive, lobe-finned, bony fishes believed to have given rise to the amphibians and all other land vertebrates One major trait of the subclass is the division of the skull into an anterior, or ethmosphenoidal, unit and a posterior, or oto-occipital, unit
  • CROSSOPTERYGIAN Definition Meaning - Merriam-Webster
    The meaning of CROSSOPTERYGIAN is any of a subclass (Crossopterygii) of bony fishes (such as a coelacanth) that have paired fins suggesting limbs, that may be ancestral to the terrestrial vertebrates, and that are mostly extinct —called also lobe-fin
  • Crossopterygians, Lobe-finned fish, tassel-finned fish
    In this theory, the lungfish would be the pinnacle of 1 crossopterygian lineage Of the crossopterygians the most specialised group has forms with a strong pectoral fin, and with a humerus, ulna and radius This group includes Rhizodontiformes, Osteolepiformes, Panderichthyida, and Tetrapoda
  • Crossopterygii is a superorder of bony fishes
    Crossopterygii is an infraclass (subclass) of Sarcopterygii fishes An ancient group of bony fishes, up to 180 cm long The axial skeleton is represented by chordae, vertebral bodies are absent Paired fins in the fork of the blades are fleshy, covered with scales Pectoral fins biserial type, i e with a central skeletal axis
  • What does crossopterygian mean? - Definitions. net
    A crossopterygian is a type of bony fish that includes the lungfishes and coelacanths, characterized by its paired lobed fins which are thought to have evolved into the limbs of land vertebrates





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