Contents
DINOSAURS
SAURISCHIA
THEROPODA
EORAPTOR
INCERTAE SEDIS
ALWALKERIA
BRUHATHKAYOSAURUS
GUAIBASAURUS
OZRAPTOR
SHANYANGOSAURUS
HERRERASAURIDAE
ALIWALIA
CASEOSAURUS
CHINDESAURUS
HERRERASAURUS
STAURIKOSAURUS
NEOTHEROPODA
INCERTAE SEDIS
KELMAYISAURUS
PODOKESAURUS
RAPATOR
SIGILMASSASAURUS
UNQUILLOSAURUS
CERATOSAURIA
ELAPHROSAURUS
EUCOELOPHYSIS
GENUSAURUS
SARCOSAURUS
INCERTAE SEDIS
CAMPOSAURUS
COELOPHYSOIDEA
DILOPHOSAURUS
GOJIRASAURUS
LILIENSTERNUS
COELOPHYSIDAE
COELOPHYSIS
PROCOMPSOGNATHUS
SEGISAURUS
SYNTARSUS
NEOCERATOSAURIA
CERATOSAURUS
INCERTAE SEDIS
DANDAKOSAURUS
VELOCISAURUS
ABELISAUROIDEA
COMPSOSUCHUS
GENYODECTES
ABELISAURIDAE
ABELISAURUS
CARNOTAURUS
INDOSAURUS
INDOSUCHUS
MAJUNGATHOLUS
TARASCOSAURUS
XENOTARSOSAURUS
NOASAURIDAE
LIGABUEINO
NOASAURUS
TETANURAE
AFROVENATOR
CHILANTAISAURUS
CHINGKANKOUSAURUS
EDMARKA
ERECTOPUS
EUSTREPTOSPONDYLUS
KAIJIANGOSAURUS
MAGNOSAURUS
MEGALOSAURUS
PIATNITZKYSAURUS
PIVETEAUSAURUS
POEKILOPLEURON
TORVOSAURUS
XUANHANOSAURUS
INCERTAE SEDIS
BECKLESPINAX
SPINOSAURIDAE
ANGATURAMA
ASIAMERICANA
BARYONYX
CRISTATUSAURUS
IRRITATOR
SIAMOSAURUS
SPINOSAURUS
SUCHOMIMUS
AVETHEROPODA
GASOSAURUS
MARSHOSAURUS
CARNOSAURIA
CRYOLOPHOSAURUS
ILIOSUCHUS
LOURINHANOSAURUS
METRIACANTHOSAURUS
MONOLOPHOSAURUS
VALDORAPTOR
WAKINOSAURUS
ALLOSAUROIDEA
SINRAPTORIDAE
SINRAPTOR
SZECHUANOSAURUS
YANGCHUANOSAURUS
ALLOSAURIDAE
ALLOSAURUS
NEOVENATOR
CARCHARODONTOSAURIDAE
ACROCANTHOSAURUS
BAHARIASAURUS
CARCHARODONTOSAURUS
GIGANOTOSAURUS
COELUROSAURIA
BAGARAATAN
COELURUS
DELTADROMEUS
DRYPTOSAURUS
LABOCANIA
NEDCOLBERTIA
ORNITHOLESTES
PROCERATOSAURUS
COMPSOGNATHIDAE
COMPSOGNATHUS
SINOSAUROPTERYX
INCERTAE SEDIS
MEGARAPTOR
ORNITHODESMUS
RICARDOESTESIA
TIMIMUS
MANIRAPTORIFORMES
INCERTAE SEDIS
AVIMIMUS
KAKURU
KOPARION
SCIPIONYX
ARCTOMETATARSALIA
TYRANNOSAUROIDEA
SIAMOTYRANNUS
TYRANNOSAURIDAE
ALBERTOSAURUS
ALECTROSAURUS
ALIORAMUS
DASPLETOSAURUS
GORGOSAURUS
ITEMIRUS
MALEEVOSAURUS
NANOTYRANNUS
SHANSHANOSAURUS
STOKESOSAURUS
STYGIVENATOR
TARBOSAURUS
TYRANNOSAURUS
ORNITHOMIMOSAURIA
GARUDIMIMUS
HARPYMIMUS
PELECANIMIMUS
ORNITHOMIMIDAE
ANSERIMIMUS
ARCHAEORNITHOMIMUS
DEINOCHEIRUS
DROMICEIOMIMUS
GALLIMIMUS
ORNITHOMIMUS
STRUTHIOMIMUS
MANIRAPTORA
PROTARCHAEOPTERYX
INCERTAE SEDIS
ARCHAEORNITHOIDES
TROODONTIDAE
BOROGOVIA
SAURORNITHOIDES
SINORNITHOIDES
TOCHISAURUS
TROODON
OVIRAPTOROSAURIA
CAUDIPTERYX
MICROVENATOR
CAENAGNATHIDAE
CAENAGNATHASIA
CHIROSTENOTES
ELMISAURUS
OVIRAPTORIDAE
CONCHORAPTOR
INGENIA
OVIRAPTOR
THERIZINOSAUROIDEA
ALXASAURUS
BEIPIAOSAURUS
THERIZINOSAURIDAE
ENIGMOSAURUS
ERLIKOSAURUS
NANSHIUNGOSAURUS
SEGNOSAURUS
THERIZINOSAURUS
EUMANIRAPTORA
DROMAEOSAURIDAE
ADASAURUS
DEINONYCHUS
DROMAEOSAURUS
EURONYCHODON
SAURORNITHOLESTES
UTAHRAPTOR
VARIRAPTOR
VELOCIRAPTOR
AVIALAE
UNENLAGIA
AVES
ARCHAEOPTERYX
RAHONAVIS
METORNITHES
ALVAREZSAURIDAE
ALVAREZSAURUS
MONONYKUS
PARVICURSOR
PATAGONYKUS
SHUVUUIA
SAUROPODOMORPHA
PROSAUROPODA
THECODONTOSAURIDAE
AZENDOHSAURUS
THECODONTOSAURUS
ANCHISAURIDAE
ANCHISAURUS
MASSOSPONDYLIDAE
MASSOSPONDYLUS
YUNNANOSAURIDAE
JINGSHANOSAURUS
YUNNANOSAURUS
PLATEOSAURIDAE
AMMOSAURUS
MUSSAURUS
PLATEOSAURUS
SELLOSAURUS
YIMENOSAURUS
MELANOROSAURIDAE
CAMELOTIA
COLORADISAURUS
EUSKELOSAURUS
LUFENGOSAURUS
MELANOROSAURUS
RIOJASAURUS
BLIKANASAURIDAE
BLIKANASAURUS
SAUROPODA
KOTASAURUS
INCERTAE SEDIS
AUGUSTIA
CAMPYLODONISCUS
GONGXIANOSAURUS
LOURINHASAURUS
QINLINGOSAURUS
VULCANODONTIDAE
BARAPASAURUS
OHMDENOSAURUS
VULCANODON
ZIZHONGOSAURUS
EUHELOPODIDAE
BELLUSAURUS
DATOUSAURUS
EUHELOPUS
HUDIESAURUS
KLAMELISAURUS
MAMENCHISAURUS
OMEISAURUS
SHUNOSAURUS
TIENSHANOSAURUS
CETIOSAURIDAE
AMYGDALODON
CETIOSAURUS
HAPLOCANTHOSAURUS
PATAGOSAURUS
PROTOGNATHOSAURUS
RHOETOSAURUS
NEOSAUROPODA
DIPLODOCOIDEA
INCERTAE SEDIS
CETIOSAURISCUS
REBBACHISAURUS
DIPLODOCIDAE
AMPHICOELIAS
APATOSAURUS
BAROSAURUS
DINHEIROSAURUS
DIPLODOCUS
DYSLOCOSAURUS
DYSTROPHAEUS
EOBRONTOSAURUS
MONGOLOSAURUS
SEISMOSAURUS
SUPERSAURUS
DICRAEOSAURIDAE
AMARGASAURUS
DICRAEOSAURUS
NEMEGTOSAURIDAE
NEMEGTOSAURUS
BRACHIOSAURIDAE
BOTHRIOSPONDYLUS
BRACHIOSAURUS
CHUBUTISAURUS
EUCAMEROTUS
ISCHYROSAURUS
LAPPARENTOSAURUS
ORNITHOPSIS
PELOROSAURUS
PLEUROCOELUS
SONORASAURUS
VOLKHEIMERIA
TITANOSAUROIDEA
AUSTROSAURUS
IUTICOSAURUS
OPISTHOCOELICAUDIA
PHUWIANGOSAURUS
TITANOSAURIDAE
AEGYPTOSAURUS
AEOLOSAURUS
AEPYSAURUS
ALAMOSAURUS
AMPELOSAURUS
ANDESAURUS
ANTARCTOSAURUS
ARGENTINOSAURUS
ARGYROSAURUS
EPACHTHOSAURUS
HYPSELOSAURUS
JAINOSAURUS
JANENSCHIA
LAPLATASAURUS
MACRUROSAURUS
MAGYAROSAURUS
MALAWISAURUS
NEUQUENSAURUS
PELLEGRINISAURUS
SALTASAURUS
TITANOSAURUS
CAMARASAURIDAE
ARAGOSAURUS
CAMARASAURUS
CHONDROSTEOSAURUS
ORNITHISCHIA
FABROSAURUS
GALTONIA
LUCIANOSAURUS
PEKINOSAURUS
PISANOSAURUS
TAVEIROSAURUS
TECHNOSAURUS
TECOVASAURUS
INCERTAE SEDIS
REVUELTOSAURUS
GENASAURIA
THYREOPHORA
EMAUSAURUS
SCELIDOSAURUS
SCUTELLOSAURUS
EURYPODA
STEGOSAURIA
CRATEROSAURUS
HUAYANGOSAURUS
KENTROSAURUS
REGNOSAURUS
TATISAURUS
STEGOSAURIDAE
CHIALINGOSAURUS
CHUNGKINGOSAURUS
DACENTRURUS
LEXOVISAURUS
MONKONOSAURUS
PARANTHODON
STEGOSAURUS
TUOJIANGOSAURUS
WUERHOSAURUS
ANKYLOSAURIA
MINMI
TIANCHISAURUS
NODOSAURIDAE
ACANTHOPHOLIS
DRACOPELTA
EDMONTONIA
HYLAEOSAURUS
MYMOORAPELTA
NIOBRARASAURUS
NODOSAURUS
PANOPLOSAURUS
PAWPAWSAURUS
POLACANTHUS
SARCOLESTES
SAUROPELTA
SILVISAURUS
STRUTHIOSAURUS
TEXASETES
ANKYLOSAUROIDEA
ANKYLOSAURIDAE
AMTOSAURUS
ANKYLOSAURUS
EUOPLOCEPHALUS
GARGOYLEOSAURUS
GASTONIA
MALEEVUS
NODOCEPHALOSAURUS
PINACOSAURUS
SAICHANIA
SHAMOSAURUS
SHANXIA
TALARURUS
TARCHIA
TIANZHENOSAURUS
TSAGANTEGIA
CERAPODA
MARGINOCEPHALIA
STENOPELIX
PACHYCEPHALOSAURIA
GOYOCEPHALE
HOMALOCEPHALE
MICROPACHYCEPHALOSAURUS
WANNANOSAURUS
YAVERLANDIA
PACHYCEPHALOSAURIDAE
GRAVITHOLUS
ORNATOTHOLUS
PACHYCEPHALOSAURUS
PRENOCEPHALE
STEGOCERAS
STYGIMOLOCH
TYLOCEPHALE
CERATOPIA
TURANOCERATOPS
PSITTACOSAURIDAE
PSITTACOSAURUS
NEOCERATOPIA
ASIACERATOPS
UDANOCERATOPS
ZUNICERATOPS
CORONOSAURIA
PROTOCERATOPIDAE
ARCHAEOCERATOPS
BAGACERATOPS
BREVICERATOPS
KULCERATOPS
LEPTOCERATOPS
MICROCERATOPS
MONTANOCERATOPS
PROTOCERATOPS
CERATOPIDAE
ACHELOSAURUS
ANCHICERATOPS
ARRHINOCERATOPS
AVACERATOPS
BRACHYCERATOPS
CENTROSAURUS
CHASMOSAURUS
DICERATOPS
EINIOSAURUS
PACHYRHINOSAURUS
PENTACERATOPS
STYRACOSAURUS
TOROSAURUS
TRICERATOPS
ORNITHOPODA
HETERODONTOSAURIDAE
ABRICTOSAURUS
ECHINODON
HETERODONTOSAURUS
LANASAURUS
LYCORHINUS
EUORNITHOPODA
HYPSILOPHODONTIDAE
AGILISAURUS
ATLASCOPCOSAURUS
BUGENASAURA
DRINKER
FULGUROTHERIUM
HYPSILOPHODON
LEAELLYNASAURA
ORODROMEUS
OTHNIELIA
PARKSOSAURUS
THESCELOSAURUS
YANDUSAURUS
ZEPHYROSAURUS
IGUANODONTIA
CRASPEDODON
DRYOSAURIDAE
DRYOSAURUS
VALDOSAURUS
GASPARINISAURA
MUTTABURRASAURUS
RHABDODON
TENONTOSAURUS
ANKYLOPOLLEXIA
BIHARIOSAURUS
CAMPTOSAURIDAE
CALLOVOSAURUS
CAMPTOSAURUS
STYRACOSTERNA
HADROSAURIFORMES
IGUANODONTIDAE
ALTIRHINUS
IGUANODON
LURDUSAURUS
OURANOSAURUS
PROBACTROSAURUS
HADROSAUROIDEA
BACTROSAURUS
BARSBOLDIA
CLAOSAURUS
LOPHORHOTHON
PROTOHADROS
SECERNOSAURUS
TANIUS
TELMATOSAURUS
TSINTAOSAURUS
HADROSAURIDAE
ANATOTITAN
ARALOSAURUS
BRACHYLOPHOSAURUS
CORYTHOSAURUS
EDMONTOSAURUS
EOLAMBIA
GILMOREOSAURUS
GRYPOSAURUS
HYPACROSAURUS
JAXARTOSAURUS
KRITOSAURUS
LAMBEOSAURUS
MAIASAURA
NIPPONOSAURUS
PARARHABDODON
PARASAUROLOPHUS
PROSAUROLOPHUS
SAUROLOPHUS
SHANTUNGOSAURUS
INVALID GENERA
'A'
ABROSAURUS
ACRACANTHUS
AETONYX
AGATHAUMAS
AGGIOSAURUS
AGROSAURUS
ALBISAURUS
ALGOASAURUS
ALOCODON
ALTISPINAX
AMPHISAURUS
AMUROSAURUS
ANAMANTARX
ANASAZISAURUS
ANATOSAURUS
ANODONTOSAURUS
ANOPLOSAURUS
ANTHODON
ANTRODEMUS
APATODON
ARAUCANORAPTOR
ARCTOSAURUS
ARISTOSAURUS
ARISTOSUCHUS
ARKANOSAURUS
ARKANSAURUS
ARSTANOSAURUS
ASIATOSAURUS
ASTRODON
ASTRODONIUS
ATLANTOSAURUS
AUBLYSODON
AVALONIA
AVIPES
AVISAURUS
'B'
BASUTODON
BEELEMODON
BETASUCHUS
BISON
BRACHYPODOSAURUS
BRACHYRHOPUS
BRADYCNEME
BRASILEOSAURUS
BRONTORAPTOR
BRONTOSAURUS
'C'
CAENAGNATHUS
CALAMOSAURUS
CALAMOSPONDYLUS
CAMPTONOTUS
CAMPYLODON
CAPITALSAURUS
CARDIODON
CARNOSAURUS
CATHETOSAURUS
CAUDOCOELUS
CAULODON
CERATOPS
CHANGTUSAURUS
CHAOYOUNGOSAURUS
CHASSTERNBERGIA
CHENEOSAURUS
CHIAYUSAURUS
CHIENKOSAURUS
CHIHUAHUASAURUS
CHINSHAKIANGOSAURUS
CHONDROSTEUS
CHUANDONGOCOELURUS
CIONODON
CLADEIDON
CLAORHYNCHUS
CLASMODOSAURUS
CLEPSYSAURUS
CLEVELANOTYRANNUS
COELOSAURUS
COELUROIDES
COELUROSAURUS
COLONOSAURUS
COLORADIA
CRATAEOMUS
CREOSAURUS
CRYPTODRACO
CRYPTOSAURUS
CUMNORIA
CYLINDRICONODON
'D'
DACHUNGOSAURUS
DAMALASAURUS
DANUBIOSAURUS
DAPTOSAURUS
DEINODON
DENVERSAURUS
DIANCHUNGOSAURUS
DICLONIUS
DIDANODON
DIMODOSAURUS
DINODOCUS
DINOSAURUS
DINOTYRANNUS
DIPLOMOTODON
DIRACODON
DOLICHOSUCHUS
DORYPHOROSAURUS
DROMICOSAURUS
DRAVIDOSAURUS
DRYPTOSAUROIDES
DYNAMOSAURUS
DYOPLOSAURUS
DYSALOTOSAURUS
DYSGANUS
DYSTYLOSAURUS
'E'
EFRAASIA
ELOPTERYX
ELOSAURUS
EMBASAURUS
EOCERATOPS
EOHADROSAURUS
EPANTERIAS
EUACANTHUS
EUCENTROSAURUS
EUCERCOSAURUS
EUCNEMESAURUS
'F'
FENESTROSAURUS
FRENGUELLISAURUS
FUKUISAURUS
FULENGIA
FUTABASAURUS
'G'
GADOLOSAURUS
GADROSAURUS
GERANOSAURUS
GIGANTOSAURUS
GIGANTOSCELUS
GIGANTOSPINOSAURUS
GIRAFFATITAN
GOBISAURUS
GONGBUSAURUS
GRACILICERATOPS
GRACILISUCHUS
GRAVISAURUS
GRESSLYOSAURUS
GRYPONYX
GYPOSAURUS
'H'
HADROSAURAVUS
HADROSAURUS
HALLOPUS
HALTICOSAURUS
HAPLOCANTHUS
HECATOSAURUS
HEISHANSAURUS
HELOPUS
HEPTASTEORNIS
HETEROSAURUS
HIEROSAURUS
HIKANODON
HIRONOSAURUS
HISANOHAMASAURUS
HONGHESAURUS
HOPLITOSAURUS
HOPLOSAURUS
HORTALOTARSUS
HULSANPES
HUNHOSAURUS
HYLOSAURUS
HYPSIBEMA
HYPSIROPHUS
'I'
IGUANOSAURUS
INOSAURUS
ISCHISAURUS
'J'
JENGHIZKHAN
JENSENOSAURUS
JIANGJUNMIAOSAURUS
JUBBULPURIA
JURAPTERYX
JURASSOSAURUS
'K'
KAGASAURUS
KANGNASAURUS
KATSUYAMASAURUS
KENTRUROSAURUS
KITADANISAURUS
KOREANOSAURUS
KUNMINGOSAURUS
KUZHOLIA
'L'
LABROSAURUS
LAELAPS
LAEVISUCHUS
LAGERPETON
LAGOSUCHUS
LAMETASAURUS
LANCANGOSAURUS
LANCANJIANGOSAURUS
LAOSAURUS
LEIPSANOSAURUS
LEPTOSPONDYLUS
LESOTHOSAURUS
LEWISUCHUS
LIKHOELESAURUS
LIMAYSAURUS
LIMNOSAURUS
LISBOASAURUS
LONCOSAURUS
LONGISQUAMA
LONGOSAURUS
LORICOSAURUS
LUANPINGOSAURUS
LUFENGOCEPHALUS
LUKOUSAURUS
LUSITANOSAURUS
'M'
MACRODONTOPHION
MACROPHALANGIA
MADSENIUS
MAGULODON
MAJUNGASAURUS
MANDSHUROSAURUS
MANOSPONDYLUS
MARASUCHUS
MARMAROSPONDYLUS
MEGACERVIXOSAURUS
MEGADACTYLUS
MEGADONTOSAURUS
MENISCOESSUS
MICROCEPHALE
MICROCOELUS
MICRODONTOSAURUS
MICROHADROSAURUS
MICROSAUROPS
MIFUNESAURUS
MOCHLODON
MONOCLONIUS
MORINOSAURUS
MOROSAURUS
MOSHISAURUS
'N'
NAASHOIBITOSAURUS
NANOSAURUS
NECTOSAURUS
NEOSAURUS
NEOSODON
NGEXISAURUS
NINGHSIASAURUS
NOTOCERATOPS
NOTOHYPSILOPHODON
NUROSAURUS
NUTHETES
NYASASAURUS
'O'
OLIGOSAURUS
OMOSAURUS
ONYCHOSAURUS
OPLOSAURUS
ORCOMIMUS
ORINOSAURUS
ORNITHOIDES
ORNITHOMERUS
ORNITHOMIMOIDES
ORNITHOTARSUS
OROSAURUS
ORTHOGONIOSAURUS
ORTHOMERUS
OSHANOSAURUS
OVORAPTOR
'P'
PACHYSAURISCUS
PACHYSAUROPS
PACHYSAURUS
PACHYSPONDYLUS
PALAEOPTERYX
PALAEOSAURISCUS
PALAEOSAURUS
PALAEOSCINCUS
PARAIGUANODON
PARONYCHODON
PARROSAURUS
PATRICOSAURUS
PECTINODON
PEISHANOSAURUS
PELTOSAURUS
PHAEDROLOSAURUS
PHYLLODON
PICRODON
PLATEOSAURAVUS
PLEUROPELTUS
POICILOPLEURON
POLACANTHOIDES
POLYODONTOSAURUS
POLYONAX
PRICONODON
PRIODONTOGNATHUS
PROCERATOPS
PROCEROSAURUS
PROCHENEOSAURUS
PRODEINODON
PROIGUANODON
PROTIGUANODON
PROTOAVIS
PROTOGNATHUS
PROTOROSAURUS
PROTRACHODON
PSEUDOLAGOSUCHUS
PTEROPELYX
PTEROSPONDYLUS
'Q'
QUAESITOSAURUS
QANTASSAURUS
'R'
RAYOSOSAURUS
RHADINOSAURUS
RHODANOSAURUS
RILEYASUCHUS
RINCHENIA
RIOARRIBASAURUS
RIOJASUCHUS
ROCCOSAURUS
'S'
SALTOPUS
SANCHUSAURUS
SANGONGHESAURUS
SANPASAURUS
SAURECHINODON
SAUROPHAGANAX
SAUROPHAGUS
SAUROPLITES
SCOLOSAURUS
SCROTUM
SHUVOSAURUS
SILUOSAURUS
SINOCOELURUS
SINOSAURUS
SPHENOSPONDYLUS
SPINOSUCHUS
SPONDYLOSOMA
SQUALODON
STEGOPELTA
STEGOSAURIDES
STENONYCHOSAURUS
STENOTHOLUS
STEPHANOSAURUS
STEREOCEPHALUS
STEREOSAURUS
STERRHOLOPHUS
STRENUSAURUS
STREPTOSPONDYLUS
SUCCINODON
SUCHOSAURUS
SUGIYAMASAURUS
SYMPHYROPHUS
SYNGONOSAURUS
SYRMOSAURUS
'T'
TANYSTROPHAEUS
TANYSTROSUCHUS
TAWASAURUS
TEINCHISAURUS
TEINUROSAURUS
TEISHANOSAURUS
TENANTOSAURUS
TENCHISAURUS
TERATOSAURUS
TETRAGONOSAURUS
THECOCOELURUS
THECOSPONDYLUS
THEROSAURUS
THESPESIUS
THOTOBOLOSAURUS
TIANCHUNGOSAURUS
TICHOSTEUS
TOMODON
TONOUCHISAURUS
TORNIERIA
TRACHODON
TRIMUCRODON
TRIPRIODON
TUGULUSAURUS
TYLOSTEUS
TYREOPHORUS
'U'
UGROSAURUS
UINTASAURUS
ULTRASAUROS
ULTRASAURUS
UMARSAURUS
'V'
VECTENSIA
VECTISAURUS
VELOCIPES
'W'
WALGETTOSUCHUS
WALKERIA
WYLEYIA
WYOMINGRAPTOR
'X'
XIAOSAURUS
XUANHUASAURUS
'Y'
YALEOSAURUS
YEZOSAURUS
YINGSHANOSAURUS
YUBASAURUS
'Z'
ZANCLODON
ZAPSALIS
ZATOMUS
ZIGONGOSAURUS
DOCUMENTATION and HELP
Essays
GENERAL INFORMATION
WERE DINOSAURS WARM-BLOODED?
DINOSAUR FEEDING
DINOSAUR BEHAVIOUR AND REPRODUCTION
DINOSAUR EXTINCTIONS
DINOSAUR EVOLUTION
DINOSAUR CLASSIFICATION
MAJOR DINOSAUR GROUPS
DINOSAURS AND BIRDS
DINOSAURS FROM DIFFERENT CONTINENTS
DINOSAUR FOSSILIZATION
GEOLOGICAL ERAS
PREHISTORIC REPTILES