636 



GEOLOGY. 



composition of the lifeless and rigid masses around us, may be formed from the following 

 list of strata by Dr. Mantell, which are wholly, or in great part, composed of animal 

 remains : 



Strata. 



Trilobite schist 

 Dudley limestone - 

 Shelly limestone 



Mountain limestone 



Encrinital marble - 



Muscle-band 



Ironstone nodules - 



Lias shales and clays 



Limestone - 



Lias conglomerates - 



Gryphite limestone - 



Limestone 



Stonesfield slate 



Pappenheim schist - 



Bath stone 



Limestone 



Coral -rag 



Bradford limestone - 



Portland oolite 



Purbeck and Sussex marble 



Wealden limestone - 



Tilgate grit (some beds) 

 Farringdon gravel - 

 Jasper and chert 

 Green-sand 

 Chalk 



Maestricht limestone 



Hippurite limestone 



Hard chalk (some beds) 



Flints 



Limestone 



Nummulite rock 



Septaria 



Calcaire grossier - 



Gypseous limestone 



Siliceous limestone 



Lacustrine marls 



Monte Bolce limestone 



Bone-breccia 



Sub-Himalaya sandstone 



Tripoli - 



Richmond marl 



Semiopal 



Mountain marl 



Guadaloupe limestone 



Bermuda limestone 



Bermuda chalk 



Bog iron ochre - . 



Prevailing Fossils. 



Trilobites and shells ... 



Corals, crinoidea, shells, and trilobites 

 Producta?, spiriferae, &c. - 



Corals and shells ... 



Lily-shaped animals and shells 



Fresh-water muscles 



Trilobites, insects, and shells 



Pentacrinites, reptiles, fishes 



Terebratulae and other shells 



Fishes, shells, corals - 



Shells, principally gryphites 



Terebratula?, and other shells 



Shells, reptiles, fishes, insects 



Crustacea, reptiles, fishes, insects 



Shells, corals, crinoidea, reptiles, fishes 



Cephalopoda, principally ammonites 



Corals, shells, echini, ammonites 



Crinoidea, shells, coral cephalopoda 



Ammonites, trigonia?, and other shells 



Fresh-water shells, Crustacea, reptiles, fishes 

 J" Cyclades, and other fresh-water shells, ~| 

 X Crustacea, reptiles, fishes. J 



Reptiles, fishes, fresh-water shells - 



Sponges, corals, echini, and shells - 



Shells, sponges, and animalcules 



Fibrous zoophytes - ... 



Corals, infusoria, echini, shells, fishes 

 f Corals, shells, ammonites, belcmnites, and T 

 X other cephalopoda reptiles. J 



Shells, principally hippurites 



Echini and belemnites ... 

 r Sponges and other fibrous zoophytes, in- 

 J fusoria, and spines of zoophytes, shells, 

 l_ corals, crinoidea. 



Fresh- water shells ... 



Nummulites 



Nautili, turntellzr, and other shells 



Shells and corals - _ _ 



Mammalia^alaeotheriaj&c.birdSjreptileSjfibhes 



Shells 



Cyprides, phryganea;, fresh-water shells 



Fishes ..... 



Mammalia and land shells 



Elephant, mastodon, and reptiles 



Infusoria .... 



Animalcules and infusoria 



Infusoria 



Infusoria .... 



HUMAN skeletons, land-shells, and corals 



Corals, shells, serpulas - 



Comminuted corals, shells, &c. 



Infusoria - 



Formations. 

 Silurian system. 



f Carboniferous 

 X system. 



Lias. 



Inferior oolite. 

 Oolite. 



Wealden. 



Shanklin sand. 



Chalk. 



Tertiary. 



Human epoch. 



