Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pages: 54. Chapters: List of prehistoric cartilaginous fish, Thelodonti, Onychodus, List of prehistoric jawless fish, Dunkleosteus, Psarolepis, Unicerosaurus, Marsdenichthys, Galeaspida, Echinochimaera, Haikouichthys, Anaspida, Edaphodon kawai, Jamoytius kerwoodi, Cephalaspis, Myllokunmingia, Furcacauda, Ostracoderm, Ctenurella, Harpagofututor, Osteostraci, Ceratodus, Coelacanthopsis, Leufuichthys, Astraspis, Ptychodus mortoni, Errivaspis, Arandaspis, Pteraspis, Saurichthyiformes, Letognathus, Mawsonia, Doryaspis, Auchenaspis, Iniopteryx, Polazzodus, Undichna, Sinosaurichthys, Porolepiformes, Jiaodontus, Delphyodontos, Caucasichthys, Diplocercides, Diabolepis, Bathysoma, Piveteauia, Guiyu oneiros, Sacabambaspis, Ichnomylax, Pucapristis, Potamoceratodus, Reginaselache, Hemicyclaspis, Bukkanodus, Endeiolepis, Harranahynchus, Drepanaspis gemuendenensis, Pietschellus, Beishanichthys, Soederberghia, Tremataspis, Cobelodus, Eomola, Ateleaspis, Akaimia, Boreaspis, Benneviaspidida, Cleithrolepis, Spathobathis, Qingmenodus, Potangaspis, Phlyctaeniidae, Pteraspidomorphi, Bullichthys, Coupatezia, Thelodus, Tristychius, Areyongalepis, Lepidaspis, Pharyngolepis, Langlieria, Heddleichthys, Ectosteorhachis, Chrysolepis, Allenypterus, Canowindra, Rhombodus, Cyclobatis, Notorhynchus, Stroinolepis, Nardovelifer, Dalpiazia, Hadronector, Sinamia, Megalichthys, Murrindalaspis, Ptychodontidae, Polyosteorhynchus, Undina, Dipteridae, Zenion, Erquitaia, Eoactinistia, Conchopoma, Menaspis, Melanognathus, Beelarongia, Duffichthys, Notorhizodon, Ischyrhiza, Canowindridae, Uranolophidae, Jarvikina, Ctenopristis, Pycnosteus, Whiteia, Youngolepis, Ctenaspis, Archaeozeus, Rhynchodipteridae, Sclerorhynchidae, Dipnorhynchidae, Mawsoniidae, Apedolepis, Eriptychiida, Uranolophus, Luckeus, Yunnanolepis, Cladarosymblema, Rhabdodermatidae, Stomiahykidae, Libys, Osteolepidae, ..