Labidosaurus hamatus cast of skull Permian reptile
Lagosuchus talampayensis cast of left hind leg Triassic dinosaur
Laqueus fossil Tertiary brachiopod
Leptictis cast of skull and jaw Tertiary mammal
Leptomeryx evansi cast of skull and jaw Tertiary mammal
Libonectes morgani sculpture of skull and jaw Cretaceous reptile
Limnomis delaneyi fossil Devonian fish
Liopleurodon ferrox cast of tooth Jurassic reptile
Liroceras fossil Pennsylvanian cephalopod
Longisquama cast of partial skeleton Triassic reptile
Longusorbis fossil Cretaceous arthropod
Longusorbis fossil Cretaceous arthropod
Lovenia fossil Tertiary echinoderm
Lycaneops cast of skull and jaw Permian mammal-like reptile
Lycoptera fossil Jurassic fish
Lycosuchus cast of skull and jaw Permian mammal-like reptile
Lyropecten fossil Tertiary bivalve
Lystrosaurus cast of skull Triassic mammal-like reptile
Lystrosaurus georgi cast of left hind leg and foot Triassic mammal-like reptile
Lystrosaurus hedini cast of skull Triassic mammal-like reptile
Lytoloma elegans cast of skull Cretaceous reptile
Maclurites fossil Ordovician gastropod
Macrocrinus fossil Mississippian echinoderm
Macroeathes cast of fish Jurassic fish
Macrotarsius cast of jaw Tertiary primate
Mammut cast of molar Quaternary mammal
Mammuthus molar Quaternary mammal
Manticoceras fossil Devonian cephalopod
Marsupites fossil Cretaceous echinoderm
Massetognathus pascuali cast of left hind leg Triassic mammal-like reptile
Massospondylus cast of skeleton Jurassic dinosaur
Mawsonites early jellyfish Precambrian coral
Medlicottia fossil Permian cephalopod
Meekoceras fossil Triassic cephalopod
Megacoelacanthus dobiei cast of left jaw Cretaceous fish
Meganeura monyi cast Pennsylvanian arthropod
Meganeuropsis americana fossil Permian arthropod
Megapronorites sakmarensis fossil Mississippian cephalopod
Megaraptor namunhuaiquil cast of killer claw Cretaceous dinosaur
Megateuthis gigantea fossil Jurassic cephalopod
Meniscoessus cast of skull and jaw Cretaceous mammal
Merocanites compressus fossil Mississippian cephalopod
Mesenosaurus cast of skeleton Permian mammal-like reptile
Mesohippus cast of skull and jaw Tertiary mammal
Mesopithecus pentellici cast of skull and jaw Tertiary primate
Mesosaurus cast of skeleton Permian reptile
Mesosaurus cast of skeleton Permian reptile
Metaidetes Archaeocyathid Cambrian archeocyathid
Metalegoceras fossil Permian cephalopod
Metengonoceras fossil Cretaceous cephalopod
Micraster fossil Cretaceous echinoderm
Millerosteus cast of whole fish Devonian fish
Modiolopis fossil Ordovician bivalve
Monograptus lobiferus fossil Silurian graptolite
Monophyllites fossil Triassic cephalopod
Morganucodon cast of skull Jurassic mammal
Mosasaurus (small) cast of jaw Cretaceous reptile
Moschorhinus cast of skull and jaw Triassic mammal-like reptile
Moschorhinus cast of skull and jaw Permian mammal-like reptile
Mosquito fossil Cretaceous arthropod
Myalina fossil Permian bivalve
Mylacris fossil Pennsylvanian arthropod
Mylostoma variable cast of jaw Devonian fish
Nanopareie cast of skull Permian reptile
Nannodectes gazini cast of mandible and maxila Tertiary primate
Nautilus fossil Quaternary cephalopod
Nemiana simplex fossil PreCambrian primitive anthozoan
Neocamptocrinus fossil Permian echinoderm
Neoproetus fossil Permian arthropod
Neopronorites fossil Permian cephalopod
Neopteryplax conemaughensis cast of skull Pennsylvanian amphibian
Neosilisites fossil Cretaceous cephalopod
Neospirifer fossil Pennsylvanian brachiopod
Nevadia weeksi fossil Cambrian arthropod
Northarctus tenebrosus ANH cast of skull and jaw Tertiary primate
Notopocorystes fossil Cretaceous arthropod
Nummulites fossil Tertiary eukaryote
Oedaleops skull Permian mammal-like reptile
Olenellus gilberti fossil Cambrian arthropod
Ophiacodon cast of skull Permian mammal-like reptile
Oreopithecus bamboli cast of jaw Tertiary primate
Osteolepis macrolepidotus cast of nearly complete skeleton Devonian fish
Othniella rex cast of skull Jurassic dinosaur
Othniella rex cast of left hind leg and foot Jurassic dinosaur
Oudenodon cast of skull and jaw Permian mammal-like reptile
Owenites fossil Triassic cephalopod