**BACKGROUND MUSIC** "Can't You See" The Marshall Tucker Band" CLICK HERE A list of the trilobite families in each Paleozoic time period CAMBRIAN FAMILIES (102) Olenellidae,Daguinaspididae,Callaviidae,Holmiidae,Wanneriidae,Nevadiidae,Redlichiidae,Saukiandidae, Gigantopygidae,Despujolsiidae,Protolenidae,Aldonaiidae,Yunnanocephalidae,Metadoxidae,Jakutidae,Dolerolenidae,Hicksiidae,Abadiellidae, Ellipsocephalidae,Oryctocephalidae,Conocoryphidae,Zacanthoididae,Andrarinidae,Dorypygidae,Dolichometopidae,Ogygopsidae, Cornynexochidae,Bathynotidae,Dinesidae,Paradoxididae,Yinitidae,Nepeidae,Agraulidae,Bolaspididae,Alokistocaridae,Ptychopariidae, Emmrichellidae,Liostracinidae,Conokephalinidae,Crepicephalidae,Papyriaspididae,Kingstoniidae,Anomocaridae,Asaphiscidae,Burlingiidae, Menomoniidae,Marjumiidae,Solenopleuridae,Pagodiidae,Leiostegiidae,Damesellidae,Avoninidae,Eoacidasppididae,Ceratopygidae, Komaspididae,Eoacidaspididae,Ceratopygidae,Komaspididae,Shumardiidae,Tricrepicephalidae,Idahoidae,Dikelocephalidae,Pterocephalidae, Housiidae,Illaenuridae,Shirakiellidae,Parabolinoididae,Lonchocephalidae,Dokimocephalidae,Catillicephalidae,Elviniidae,Raymondinidae,Coosellidae, Cheilocephalidae,Kaolishaniidae,Ptychaspididae,Saukiidae,Eurekiidae,Loganellidae,Hungaiidae,Diceratocephalidae,Tsinaniidae,Norwoodidae, Lecanopygidae,Plethopeltidae,Harpididae,Entomaspididae,Olenidae,Rhodonaspidinae,Remopleurididae,Asaphidae,Condylopygidae,Eodiscidae, Pagetiidae,Agnostidae,Spinagnostidae,Diplagnostidae,Clavagnostidae,Micragnostidae,Phalacromidae ORDOVICIAN FAMILIES (67) Agnostidae,Geragnostidae,Micragnostidae,Pseudagnostidae,Sphaeragnostidae,Phalacromidae, Ptychopariidae,Conocoryphidae,Solenopleuridae,Pagodiidae,Leiostegiidae,Ceratopygidae,Komaspididae,Shumardiidae,Norwoodiidae, Lecanopygidae,Plethopeltidae,Harpididae,Entomaspididae,Olenidae,Remopleurididae,Asaphidae,Taihungshaniidae,Dikelokephalinidae, Ceratopygidae,Celmidae,Orometopidae,Alsataspididae,Hapalopleuridae,Missisquoiidae,Myindidae,Hypermecaspididae,Bathyuridae, Endymioniidae,Nileidae,Cyclopygidae,Symphysurinidae,Styginidae,Dimeropygidae,Trinucleidae,Raphiophoridae,Pliomeridae,Isocolidae, Illaenidae,Encrinuridae,Homalonotidae,Cheiridae,Harpidae,Lichakephalidae,Lichidae,Odontopleuridae,Glaphuridae,Sarkiidae,Telephinidae, Dionididae,Pterygometopidae,Monorakidae,Thysanopeltidae,Dalmanitidae,Calmoniidae,Aulacopleuridae,Otarionidae,Proetidae, Holotrachelidae,Phillipsinellidae,Ityophoridae,Calymenidae SILURIAN FAMILIES (16) Calymenidae,Raphiophoridae,Illaenidae,Encrinuridae,Homalonotidae,Cheiruridae,Harpidae, Lichidae,Odontopleuridae,Thysanopeltidae,Dalmanitidae,Calmoniidae,Aulacopleuridae,Otarionidae,Proetidae,Phacopidae DEVONIAN FAMILIES (14) Phacopidae,Homalonotidae,Cheiruridae,Calymenidae,Harpidae,Lichidae,Odontopleuridae, Thysanopeltidae,Dalmanitidae,Calmoniidae,Aulacopleuridae,Otarionidae,Proetidae,Brachymetopidae MISSISSIPPIAN FAMILIES (4) Otarionidae,Proetidae,Brachymetopidae,Phillipsiidae PENNSYLVANIAN FAMILIES (3) Otarionidae,Brachymetopidae,Phillipsiidae PERMIAN FAMILIES (1) Phillipsiidae Trilobites "molted"? (shed their shell,or exoskeleton).There were features that were part of a trilobite's cephalon (head) called "sutures"These sutures separated and allowed the trilobite to simply crawl out of it's shell. Some trilobite photos on this site were used with the permission of Keiichi Harada Please CLICK HERE to visit his site, "TRILO-BYTE" Many other photos are from Steve Hess's "EXTINCTIONS.COM" Please CLICK HERE to visit his site Boedaspis ensifer courtesy of Jim Kaste Scabriscutellum furciferum Harpes sp. Leonaspis sp. Drotops megalomanicus courtest of Michael Kipping Asaphus latus Gerastos cf. granulosus Modocia typicalis (second photo) Olenellus gilberti are from my personal collection Please CLICK HERE to visit "Charlie's Bug's" Trilobite families information from the book "TRILOBITES" by Riccardo Levi-Setti CLICK BELOW TO GO TO NEXT PAGE (Buying trilobites)