БОРИСЯК
НОВЫЙ DICERORHINUS ИЗ СРЕДНЕГО МИОЦЕНА
СЕВЕРНОГО КАВКАЗА
ИЗДАТЕЛЬСТВО АКАДЕМИИ НАУК СССР
москвзх 1938 ЛЕНИНГРАД
ACADEMIE DES SCIENCES
um; uNION DES REPUBLIQUES SOVIETIQUES SOCIALISTES
T R А V А U X
DE L’INSTITUT PALEOZOOLOGIQUE
TOME VIII
~ LIVRAISON 2
A. A. BORISSIAK
А NEW DICERORHINUS FROM THE MIDDLE MIOCENE
OF NORTH CAUCASUS
ушил
twain“ “m be
kwmzm 7‘
а ‚ жид”
„шиш
EDITION DE I’ACADEMIE ЬЕз SCIENCES DE I’URSS
moscou 1938 LENINGRAD
Ответственный редактор
директор Палеонтологического института Академии Наук СССР
акад. <...> Skull
The skull is quite deformed, its anterior part being the best preserved. <...> P r e m a х i l l a r i e 5 rather well preserved, but still slightly deformed, the left one being pressed forward.
1 Total length of each bone —- about 40 mm; width along under side —- 15; heigth of the
side — 30; symphysis (antero-posteriorly) —— about 28. ~
„ The premaxillaries —— thin, laterally compressed bones, parallel to each
other, their anterior ends converging. <...> Together they form a semi-ellipse distorted by deformation and separated along the front suture.
’ The under side of the bone represents a narrow surface, slightly inclined
inward in respect of sagittal plane; because of bad state of preservation no
signs of incisor alveoli is noticeable on it. <...> Thevupper side represents a sharp
ridge with same curvature as the bone. <...> It is impossible to affirm whether
these ridges are united in front, as the anterior ends of both bones are
injured. <...> On the left side, only the posterior part of the bone with the base of the zygomatic arch, containing the molars and last premolar, is extant; on the right side a larger
fragment of the maxillary is preserved: the lower and anterior parts of the
orbit are extant, infra—orbital foramen wanting. <...> Barissz'ak
The somewhat deformed n a s a l s are long and narrow bones, slightly
expanding towards proximal end; no clear lateral notches are distinguishable
at the distal (anterior) end. <...> This end is <...>