COMPARATIVE MORPHOLOGY OF VERTEBRATES. 



TABLE OF THE PRINCIPAL CRANIAL BONES. 



' Chondrocranium 



Cranium 



Visceral 

 skeleton 



Membrane bones 



Maxillary arch 



Mandibular arch 



Hyoid arch 



Gill arches 



Notochord 

 parachordals 



Trabeculae 



Ethmoid 

 plate 



Sense cap- 

 sules 



Lateral line 



Membrane bones 



Pterygoquadrate 

 cartilage 



Membrane 

 Meckel's cartilage 



Membrane 



Basi-, ex-, and supra- 



occipitals 



{ Basi- and ali-, pre- and 

 [ orbitosphenoids 



Mes- and ectethmoids 



f Pro-, epi-, opisth-, pter- 

 Otic \ and sphenotics (petro- 



[sal) 

 Optic (Sclerotics) 



. { Lateral ethmoid, tur- 

 Nasal < , . . 

 \ 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) 



