JUEASSIC PERIOD. 449 



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

 heterophyllus Sow., M. and U. ; A. radians 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 Mil., U. The fossil beak-like jaws of Cephalopods are called 

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



3. Articulates. — Crustaceans, Eryon Barrovensis M'Coy, L. ; Glyphea Mussina 

 Meyer, L. ; Insects, species of Buprestids, Curculionids, Carabids, Gryllus, Ephemera, 

 Asilus (Dipter), etc. 



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

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

 Figs. 805-808, Ichthyosaurus communis Conyb., L. ; I. intermedins Conyb., L. ; /. tenuiros- 

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

 macrocephalus Owen, Dimorphodon macronyx, L. ; Teleosaurus Ckapmanni Konig, L. 



2. Oblytic Epoch. 



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

 livaltia trochoides E. & H. ; Fig. 770, Prionastrcea oblonga, Dysaster ringens Ag., Clypeus 

 IIugiAg.; Rhynchonella spinosa Dav., Terebratuia fimbria Sow., T. perovalis Sow.-, 

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

 costata Park., Pholadomy a fidicula Sow., Litorina ornata Sow., Pleurotomaria granu- 

 lataDir., P. elongata Df r. ; Fig. 789, Ammonites Humphrey sianus Sow., A. Parkinsoni 

 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. approximata Phill., SphenopterisplumosaPhiW., 

 Pakeozamia megaphylla Phill., Thuyites articulatus Sternb., T. divaricatus Sternb. (all 

 plants of Stonesfield Slate); — Fig. 769, Montlivaltia caryophyllata Lmx.; Apiocrinus 

 Parkinsoni Schl., A. elegans D'Orb., Clypeus patella Ag. ; Terebratuia 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 Westwoodii; Fig. 

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

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

 colotherium Bucklandi. 



II. Middle or Oxford Oolyte. — (1.) Oxford Clay and Kelhway Rock. — Fig. 768, 

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

 Dysaster canaliculars Ag., D. ovalis, Ag. Fig. 772, Saccocomap>ectinata Ag. ; Terebratuia 

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

 Trigonia elongata Sow., Fig. 783, T. clavellata Park., Fig. 790; Ammonites Jason Mii., 

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



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

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

 Apiocrinus Rmssyanus D'Orb., Eemicidaris intermedia Forbes, Cidaris coronata Goldf., 

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

 Trigonia Bronnii Ag., T. costata Park., Fig. 785, Dicer as arietinum Lam., Astarte elegans 

 Sow., A. ovata Smith, Fig. 784, A. minima Phill. \ Nerinma fasciata, Voltz., Fig. 786 «, 

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

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

 Ardiaiopteryx macrura ; Pterodactylus crassirostris Goldf., and other species. 



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

 Exbgyra virgula Defr., Trigonia muricata Ag., T. clavellata Park.; Nerincea Gosm 

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

 Sow. ; species of Ichthyosaurus, Plesiosaurus, Pliosaurus, Teleosaurus, Megalosaurus, 

 Goniopholis, Steneosaurus, etc. 



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

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

 29 



