Archive image from page 112 of A descriptive catalogue of the. A descriptive catalogue of the marine reptiles of the Oxford clay. Based on the Leeds Collection in the British Museum (Natural History), London .. descriptivecatal02brit Year: 1910 STENEOSATJKUS. 83 The widest part of the united premaxillse is opposite the alveoli of the fourth pair of teeth. Behind them there is a long diastema, concave from before backwards and crossed at its hinder end by the maxillo-premaxillary suture ; the jaw is somewhat constricted at this point. The facial surface of the premaxillse is usually marked by
Archive image from page 112 of A descriptive catalogue of the. A descriptive catalogue of the marine reptiles of the Oxford clay. Based on the Leeds Collection in the British Museum (Natural History), London .. descriptivecatal02brit Year: 1910 STENEOSATJKUS. 83 The widest part of the united premaxillse is opposite the alveoli of the fourth pair of teeth. Behind them there is a long diastema, concave from before backwards and crossed at its hinder end by the maxillo-premaxillary suture ; the jaw is somewhat constricted at this point. The facial surface of the premaxillse is usually marked by a sculpture of vermiculate grooves. The maxillce (mx.) are very large bones forming the greater part of the rostrum. From the point where their suture with the premaxillse crosses the alveolar border to opposite the anterior angle of the nasals (about opposite the twenty-first maxillary tooth in Steneosaurus leedsi) the sides of the rostrum are nearly parallel, the widening being very gradual in this region, particularly in species, such as St. leedsi, with a long narrow rostrum. At the level of the anterior angle of the nasals the divergence of the sides of the jaw becomes more marked, but is still gradual, the passage into the post- Text-fig. 32. ¥f HJ- Semi-diagrammatic figure of the palatal surface of the skull of Steneosaurus durobrivensis. (About 1 nat. size.) hoc, basioccipital; bs., basisphenoid; car., carotid foramen : , lateral eustachian opening; , median eustachian opening ; , exoccipital; , internal nares ; j., jugal; , lateral temporal fossa ; mx., maxilla; pal., palatine : , post frontal; pmx., premaxillse; pt., pterygoid; q., quadrate; , quadrato-jugal ; , suborbital vacuity : tp., orbital region of the skull being quite a gentle one. From the hinder point of the facial processes of the premaxillse to the anterior angle of the nasals the maxillae unite with one another in the middle dorsal line ; behi
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Keywords: 1900, 1910, andrews_charles_william_1866_1924, archive, book, bookauthor, bookcentury, bookdecade, bookpublisher, booksubject, bookyear, british_museum_natural_history_dept_of_geology, drawing, historical, history, illustration, image, london_printed_by_order_of_the_trustees, page, picture, print, reference, reptiles_fossil, vintage
