. Outlines of zoology. Tig. 294.—Cau-dal vertebraof haddock. .«.a., Neural arch ;c, centrum;,^ haemalarch. SKELETON. 553 \c) Along the floor : basi-occipital, parasphenoid, vomers. id) Around the ear on each side: sphenotic, pterotic, and epiotic (above), prootic and opisthotic (beneath).ie) In front of and around the orbit: parethmoid, lachrymal, orbit^ls. Thus the haddocks skull shows in two respects an ad- V ,A orbitals; , .hyomandibular; ^.,symplectic; ^., quadrate; Pt., pterygoid; »z/.^^., metaptery-gold; ?«^./^.,_ mesbpterygoid; PL, palatine; Mx., maxilla/*wy/., premaxill
. Outlines of zoology. Tig. 294.—Cau-dal vertebraof haddock. .«.a., Neural arch ;c, centrum;,^ haemalarch. SKELETON. 553 \c) Along the floor : basi-occipital, parasphenoid, vomers. id) Around the ear on each side: sphenotic, pterotic, and epiotic (above), prootic and opisthotic (beneath).ie) In front of and around the orbit: parethmoid, lachrymal, orbit^ls. Thus the haddocks skull shows in two respects an ad- V ,A orbitals; , .hyomandibular; ^.,symplectic; ^., quadrate; Pt., pterygoid; »z/.^^., metaptery-gold; ?«^./^.,_ mesbpterygoid; PL, palatine; Mx., maxilla/*wy/., premaxilla; Ar., articulai, An., angular; D., , urohyal; , hypohyal; , ceratohyal; e^.k., , interhyal; Op., opercular; , sub-opercular; ,inter-opercular; , prEe-opercular. vance upon that of the skate : first, in the ossification of theprimitive cartilage; and second, in the addition of membranebones. Of the latter, the parietals and frontals cover overthe spaces which in the skate form the fontanelles. 554 PISCES—FISHES. The first or mandibular arch is believed by many to form Meclcels •cartilage beneath, an
Size: 1867px × 1338px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookidcu3192, booksubjectzoology
