Lessons in elementary anatomy / by St. George Mivart.

  • St. George Jackson Mivart
Date:
1873
Catalogue details

Licence: Public Domain Mark

Credit: Lessons in elementary anatomy / by St. George Mivart. Source: Wellcome Collection.

Provider: This material has been provided by The University of Glasgow Library. The original may be consulted at The University of Glasgow Library.

    151/574 page 119
    ni.] part of the perpendicular plate, are parts which have no bony representatives in non-mammalian Vertebrates, with the ex- ception of the Crocodiles. Only that part of each palate bone which connects the body of the sphenoid with the \'omer and upper-maxillary bone {i.e. the sphenoidal and orbital processes) is represented by the palatine bones of such non-mammalian Vertebrates. Fic. 1013.—Under Surface of a Fowl's Skull. {Affey Parker.) io, b.isi-nccipital : ,'«, points just in front of the .anterior opening of the Eustn- chi,-in tubes ; j. mnUir ; iiix, m.i.vili.-iry bone ; p, p.ilatine bone , //, posl-orbil.-il proce^s : fit, pteryf;oid ; px, prc-maxilla; q, quadrate boue; qj, quadrato- jugal ; so, supr.i-occipital ; 71, vomer. In almost all those Fishes which have no osseous skull the palate bones arc represented by the anterior part of that cartilaginous bridge, or flying buttress, which proceeds from within the front of the mouth iDackwards and outwards to- wards the point of suspension of the lower jaw, and which in Sharks sujjports teeth and is called the upper jaw. _ Sometimes the horizontal plate has large defects of ossifica- tion, as in many Marsupials and the Hedgehog. Often in IVIammals the palatine may dir'cctly'join the frontal in the orbit, as in the Wo'^, Lemur, and Pterofuts. It may jom the lachrymal, as in the Dog. It may extend in the orbit between the lesser wing of the sphenoid and maxillary and
    digitised image 1
    digitised image 2
    digitised image 3