Cartilaginous
71Chordate — Chordata Temporal range: Early Cambrian – Recent, 540–0 Ma …
72Prehistoric fish — are various groups of fishes that lived before recorded history. A few, such as the coelacanth still exist today and are considered living fossils.The first fish and the first vertebrates, were the ostracoderms, which appeared in the Cambrian… …
73bone — /bohn/, n., v., boned, boning, adv. n. 1. Anat., Zool. a. one of the structures composing the skeleton of a vertebrate. b. the hard connective tissue forming the substance of the skeleton of most vertebrates, composed of a collagen rich organic… …
74Bône — /bohn/, n. former name of Annaba. * * * I Rigid connective tissue of vertebrates, consisting of cells embedded in a hard matrix. Bones serve as the body s supporting framework, provide muscle attachment points for movement, protect the internal… …
75joint — /joynt/, n. 1. the place at which two things, or separate parts of one thing, are joined or united, either rigidly or in such a way as to permit motion; juncture. 2. a connection between pieces of wood, metal, or the like, often reinforced with… …
76muscle — muscleless, adj. muscly, adj. /mus euhl/, n., v., muscled, muscling, adj. n. 1. a tissue composed of cells or fibers, the contraction of which produces movement in the body. 2. an organ, composed of muscle tissue, that contracts to produce a… …
77regeneration — /ri jen euh ray sheuhn/, n. 1. act of regenerating; state of being regenerated. 2. Electronics. a feedback process in which energy from the output of an amplifier is fed back to the grid circuit to reinforce the input. 3. Biol. the restoration or …
78Anura — ▪ amphibian order Introduction also called Salientia one of the major extant orders of the class Amphibia (amphibian). It includes the frogs (frog) and toads (toad), which, because of their wide distribution, are known by most people around… …
79Muscle — is the tissue of the body which primarily functions as a source of power. There are three types of muscle in the body. Muscle which is responsible for moving extremities and external areas of the body is called "skeletal muscle." Heart… …
80chondrocranium — A cartilaginous skull; the cartilaginous parts of the developing skull. [chondro + G. kranion, skull] * * * chon·dro·cra·ni·um .kän drə krā nē əm, drō n, pl nia the embryonic cartilaginous cranium also the part of the adult skull derived… …
