. The dinosaur book : the ruling reptiles and their relatives. Dinosaurs; Reptiles, Fossil. The system under which all animals and plants are classified \l PHYLUM SUPERCLASS CLASS AGNATHA (Jowletl «brpt«») â IACODIIMI (Certain primitive "IUhe»") CHONDRICHTHYIS PISCES âi (Tha .horkO OSTIICHTHYIS CHORDATA â / __ (The bony rlthes) ' AMPHIBIA (The amphibians) RIPTUIA TETRAPODA-< (The reptiles) AVIS (Tha birdi) MAMMALIA (Tha mammals) The classification of animals and plants, taken as a whole, involves more than just the binomial designations of genera and species. It is extende
. The dinosaur book : the ruling reptiles and their relatives. Dinosaurs; Reptiles, Fossil. The system under which all animals and plants are classified \l PHYLUM SUPERCLASS CLASS AGNATHA (Jowletl «brpt«») â IACODIIMI (Certain primitive "IUhe»") CHONDRICHTHYIS PISCES âi (Tha .horkO OSTIICHTHYIS CHORDATA â / __ (The bony rlthes) ' AMPHIBIA (The amphibians) RIPTUIA TETRAPODA-< (The reptiles) AVIS (Tha birdi) MAMMALIA (Tha mammals) The classification of animals and plants, taken as a whole, involves more than just the binomial designations of genera and species. It is extended to include increasing- ly comprehensive categories; thus genera are combined into families, families are grouped into orders, orders are combined into the higher category of classes, while various classes make up phyla. The arrange- ment mav be expressed, from the higher to the lower categories (or to put it another way, from the greater to the lesser di- visions) as follows: Suppose we wish to express the position of a modern reptile, the rattlesnake, by the svstem of Linnaean Nomenclature. j KingdomâAnimal (animals as opposed to / Plants) \ X , , y PhvlumâChoi-data (animals with back- bones) ClassâReptilia (the reptiles OrderâSquamata (the lizards, snakes, and their relatives) FamilyâCrotalidae (the pit vipers) 7 GenusâCrotalus (rattlesnakes) Speciesâadamanteus (the dia- mond-back rattler) The great primary divisions of the animal kingdom are the phyla. For instance there is a Phvlum Protozoa for all single-celled animals, so many of which are unpleasantly known to us as diseases. Then there is a Phvlum Porifera for the sponges, a Phvlum Coelenterata for the corals, a Phylum Arthropoda for the insects, spiders, and crustaceans, and so on. All the animals with backbones are contained within a single phylum, known as the Vertebrata or Chordata. This phylum may be subdivided as shown opposite. Two classes, Amphibia and Reptilia. especially concern us in this
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Keywords: ., bookauthoramericanmu, bookcentury1900, booksubjectreptilesfossil
