JURASSIC PERIOD. 449 



A. planorbis Sow., L. ; A. Conybeari Sow., L. ; Fig. 787, A. spinatus Brug., M. ; A* 

 heterophyllus Sow., M. and U. ; A. radicms D'Orb., U. ; A. serpentinus Schl., U. ; Belem- 

 nites acutus Miller, L. ; Fig. 795, B. clavatus Schl., L. and M. ; B. irregularis Schl., U. ; 

 Geoteuthis Bollensis Mu., U. The fossil beak-like jaws of Cephalopods are called 

 Rhyncholites. The last species of Conularia occurs in the Lias. 



3. Articulates. — Crustaceans, Eryon BarrorensisW Coy, L. ; Glyphea liassina 

 Merer, L. ; Insects, species of Buprestids, Curadionids, Carabids, Gryllus, Ephemera, 

 Asilus (Dipter), etc. 



4. Vertebrates. — Fishes, Acrodus nobilis Ag., L. ; JEchmodus angulifer Eg., L. ; 

 JE. Leachii Eg., L. ; Dapedius politus Leach, L. ; Hybodus reticulatusAg., L. ; Reptiles, 

 Figs. 805-808, Ichthyosaurus communis Conyb., L.; J. intermedium Conyb., L. ; /. tenuiros- 

 tris Conyb., L. ; Figs. 809, 810, Plesiosaurus dolichodeirus Conyb., L. ; Fig. 811, P. 

 macrocephdus Owen, Dimorphodon macronyx, L. ; Teleosaurus Chapmanni Kbnig, L 



2. Oblytic Epoch. 



I. Lower Oolyte. — (1.) Inferior Oolyte. — Anabacia hemisphcerica E. & H., Mont- 

 livaltia trochoides E. & H. ; Fig. 770, Prionastrcea cblonga, Bysaster ringens Ag., Clypeus 

 Hugi Ag.\ Rhynchonella spinosa Dav., Terebratula fimbria Sow., T. perovalis Sow.; 

 Ostrea Marskii Sow., O. acuminata Sow., Camptonectes (Pecten) lens Sow., Trigonia 

 costata Park., Pholadomya fidicula Sow., Litorina ornata Sow., Pleurotomaria granu- 

 lata Dfr., P. elongata Dfr. ; Fig. 789, Ammonites Humphreysianus Sow., A. Parlcinsoni 

 Sow., A. Braikenridgii Sow., Nautilus lineatus Sow., Belemnites giganteus Schl. 



(2.) Great Oolyte (Bath Oolyte, including Stonesfield slate, Cornbrash and Forest 

 Marble). — Pecopteris diversa Phill., P. app roximata Phi 11., Sphenopteris plumosaVhxW., 

 Palceozamiamegaphylla Phill., Thuyites articulatus Sternb., T. divaricatus Sternb. (all 

 plants of Stonesfield Slate); — Fig. 7G9, 31 ontlivnltia caryophyllata Lmx.; Apiocrimu 

 Parlcinsoni Schl., A. elegans D'Orb., Clypeus patella Ag. ; Terebratula digona Sow.- 

 Ostrea acuminata, Camptonectes lens, Pecten vagans Sow., Pholadomya gibbosa, Trigonia 

 costata; Purpuroidea nodulata Lye, Cylindrites acutus L. & M. ; Ammonites discus, 

 Sow., A. bullatus, A. Caprinus Schl., Belemnites giganteus ; Libellula Westivoodii} Fig. 

 813; Megalosaurus BucHandi Mey., Teleosaurus, Cetiosaurus Oxoniensis, Pterodactyls, 

 Ramphorhynchus Buchlandi, etc. Fig. 818, Amphitherium Broderipii ; Fig. 819, Phas- 

 colotherium Bucklandi. 



II. Middle or Oxford Oolyte.— (1.) Oxford Clay and Kelloway Rock.— Tig. 7G8, 

 Scyphia reticulata (Sponge); Anabacia orbitulites Lmx., Isastrata explanata Goldf . ; 

 Dysaster canaliculatus Ag., D. ovalis, Ag. Fig. 772, Saccocomapectinata Ag. ; Terebratula 

 diphya Bu., Fig. 780; Ostrea Marshii, O. gregaria Sow., Gryphcea dilatata Sow., 

 Trigonia elongata Sow., Fig. 783, T. clivellata Park., Fig. 790 ; Ammonites Jason Mil., 

 A. coronatus Brug., A. Calloviensis Sow., Belemnites hastatus Blv. 



(2.) Coral Limestone (Coral Rag). — Thecosmilia annularis M. Edw., Thamnastrma 

 arachnoides M. Edw., Isastrcea explanata Goldf., Stylina tubulifera M. Edw.; Fig. 771, 

 Apiocrinus Roissyanus D'Orb., Hemicidaris intermedia Forbes, Cidaris coronata Goldf., 

 Fig. 774, Cidaris Blumenbachii Minis t., Pygaster patelliformis Ag. ; Ostrea gregaria, 

 Trigoni't Bronnii Ag., T. costata Park., Fig. 785, Diceras arietinum Lam., Astarte elegans 

 Sow., A. ovata Smith, Fig. 784, A. minima Phill. '■> Nerincsa fasciata, Voltz., Fig. 786 a, 

 b, N. Goodhallii Sow.; Ammonites Altenensis, A. plicatilis Sow. At Solenhofen, Fig= 

 799, Eryon arctiformis Br., Fig. 798, LibeUuh; Fig. 804, Aspidorhynchus ; Fig. 817, 

 Arch&opteryx macrura ; Pterodactylus crassirostris Goldf., and other species. 



III. Upper Oolyte — (1.) Kimmeridge Clay— Ostrea deltoidea Sow., Fig. 781, 

 Exogyra virgnla Defr., Trigonia muricata Ag., T. clavellata Park.; Nerinma Gosai 

 Rom., Pterocera Oceani Brngt. ; Ammonites decipiens Sow., A. rotundus Sow., A. biplex 

 Sow. ; species of Ichthyosaurus, Plesiosaurus, Pliosaurus, Teleosaurus, 3Iegalosaurus, 

 Goniopholis, Stenensaurus, etc. 



(2.) Portland Oolyte. — Isastrcea oblonga E. & H. ; Ostrea expansa Sow., Trigonia 

 yibbosi Sow, Fig. 783, T. clavellata, Lucina Portlandica Sow., Cardium dissimile 



