216 



REPTILIA 



AUigatoreUiis, Joiu-dan (Fig. 316). Total length 22 cm. Cranial bones 

 faintly sculptured. Xasals elongated, and apparently dividing the external 



Fio. 316. 

 AUigatoreUus hcaumonti , Jourdan. Upper .Jura ; Cerin, Aiii, France, i/.i. 



nares. Tail very long ; at least thirty caudals. Lithographic Stone ; Cerin, 

 France. 



Atoposaurus, v. Meyer. Tail very long, comprising over fifty caudals. 

 Dorsal armour not observed. Otherwise like the preceding. Lithographic 

 Stone ; Cerin, France, and Bavaria. 



Family 2. Goniopholidae. {Metamosuchia, Hulke.) 



Small to large- sized crocodiles. Orbits usualli/ smcdler than suprateniporal 

 vacidties. Internal narial opening remote, at hinder margin of palatines, and 

 hounded in part by the pterygoids. Dorsal armour comprising 

 two or more longitudinal series of overlapping and sometimes 

 articidating scutes. Ventral scutes snturally united. Pur- 

 beckian and Wealden. 



Goniopholis, Owen (Diplosaurus, Marsh ; Amphicotylus, 

 Hyposcmrus, Cope), (Fig. 317). Snout moderately long, 

 nasals not quite reaching external nostril ; supratemporal 

 vacuities larger than the orbits. Twenty-three stout 

 teeth on each side of either jaw, carinated and vertically 

 grooved. Ventral armour consisting of seven to ten 

 longitudinal series of polygonal plates united by jagged 

 sutures. Skull in some species attaining a length of 

 70 cm. G. simus, Owen, known by complete skeletons 

 about 2 m. long, has limbs of equal size. Purbeckian 

 Goniopholis simus, Owen, and Wealdcu ; England, Belgium, and Northern Germany. 



Purbeckian; Swanaae, Dor- ^ ° ' " ' -^ 



setshire. Posterior portion U pper J ura ; Colorado. 



i^v^ri^^-'S^ Bermssartia, Dollo. Attaining a length of 1 m. 



nliiLf' ■^'^"''■^^°''* ^""^ Supratemporal vacuities smaller than the orbits, nasals 

 not reaching the external nostril. Twenty irregular 

 teeth on each side of either jaw ; fore-limbs much shorter than the hinder 

 pair. Dorsal armour with more than two longitudinal series of over- 



