COMPARATIVE MORPHOLOGY OF VERTEBRATES. 



TABLE OF THE PRINCIPAL CRANIAL BONES. 



Cranium 



Chondrocranium 



Membrane bones 



f Maxillary arch 



Visceral ; 

 skeleton 



Hyoid arch 



Gill arches 



Notochord 

 parachordals 



Trabeculae 



Ethmoid 

 plate 



Sense cap- 

 sules 



Otic 



Optic 



Basi-, ex-, and supra- 



occipitals 



j Basi- and ali-, pre- and 

 [ orbitosphenoids 



Mes- and ectethmoids 



[ Pro-, epi-, opisth-, pter- 

 and sphenotics (petro- 

 sal) 

 (Sclerotics) 



Lateral line 



Mandibular arch , 



Membrane bones 



P terygoquadrate 

 cartilage 



Membrane 

 Meckel's cartilage 



Membrane 



/ Lateral ethmoid, tur- 

 Nasal < . . , 

 1 bmals 



Parietals, frontals, na- 

 sals, pre- and post- 

 frontals, supra- and 

 postorbitals 



Lacrimals, infraorbitals 

 f Premaxillary, maxilla- 

 \ ry, zygomatic, quad- 

 [ ratojugal, squamosal 

 f Pterygoid (ect-, ent-, 

 j epi-, mesopterygoids), 

 [ quadrate (incus) 

 Palatines, vomers 

 Articulare (malleus), 

 mento-Meckelian 



Gill arches 



Dentary, splenial, coro- 

 noid, angulare (tym- 

 panic), suprangulare, 

 goniale 



Hyomandibulare (sta- 

 pes) symplectic, inter- 

 hyal, epi-, cerato-, 

 hypo-, and basihyal 

 (corpus, copula) (col- 

 umella) (lesser cornua) 

 Pharyngo-, epi-, cerato-, 

 hypo-, basi-, hypohyal, 

 | (copula, greater cornua) 



