. Elements of the comparative anatomy of vertebrates. Anatomy, Comparative; Vertebrates -- Anatomy. COMPARATIVE the underlying hyaline primordial skull persists entirely v< Vra- todus), or to a large extent. Gill-covers and branchiostegal rays. Fi<;. 54.—CKAMAI. AKCH, AND ANTKIIUUI EXTKKMITY Protopterus. 11', Jf"1, the which are fused with tin- skull, with their spinous (Psp, Pup1) ; 0y a fibrous band (Ji) ; D, external dentary ; ft, Meckel's cartilage, which is freely exposed, and grows out into prominences ; SL, ena- melled ridge ; ft, b, t
. Elements of the comparative anatomy of vertebrates. Anatomy, Comparative; Vertebrates -- Anatomy. COMPARATIVE the underlying hyaline primordial skull persists entirely v< Vra- todus), or to a large extent. Gill-covers and branchiostegal rays. Fi<;. 54.—CKAMAI. AKCH, AND ANTKIIUUI EXTKKMITY Protopterus. 11', Jf"1, the which are fused with tin- skull, with their spinous (Psp, Pup1) ; 0y a fibrous band (Ji) ; D, external dentary ; ft, Meckel's cartilage, which is freely exposed, and grows out into prominences ; SL, ena- melled ridge ; ft, b, teeth ; Op, Op}, rudimentary opeivular liones ; / to /'/, tlie six branchial arches ; KR, cranial ribs ; LK, Mk'. lateral and median bony lamella', which cnslieathe the cartilage of the ] toral arch (A'n, A"//.1) ; co, fibrous band. which binds the upper end of the pectoral arch with the skull; X, articular head of the pectoral arch, with which the basal segment (l>) of the five extremity articulates ; *,*, rudimentary lateral rays nf the extremity biscrial type) ; 1, 2, 3, the three next segments of the free extremity. ure present, though greatly reduced, and even the five or six car- tilaginous gill-arches are in a very rudimentary condition. The sharp, blade-like teeth, covered with enamel, deserve notice Teleostei.— In this group, the skull presents a large amount of variation ; its ground-plan, however, may alwavs lie derived from that of the bony Ganoids, and more particularly from Amia calva. On the other hand, no relations with the Amphibia, are observable, and we must, consider the whole group of the IMMIV Fishes as a side branch of the piscine Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Wiedersheim, Robert, 1848-1923; Parker, W. N. (William Newton), d. 1923. London, New York
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Keywords: ., bookcentury1800, bookdecade1880, bookpublisherlondonnewyorkmacmi
