![70 million year old Hadrosaur (duckbill dinosaur), Late Cretaceous,](https://a4.pbase.com/o4/93/329493/1/121396384.RfxbI0sj.YYZApr09322.jpg) 70 million year old Hadrosaur (duckbill dinosaur), Late Cretaceous, |
![Hadrosaur collected at Red Deer River, Alberta, 1924](https://a4.pbase.com/o4/93/329493/1/121396385.QGYCg0VA.YYZApr09324.jpg) Hadrosaur collected at Red Deer River, Alberta, 1924 |
![YYZApr09 502.jpg](https://a4.pbase.com/o4/93/329493/1/121396386.IvGB9F1S.YYZApr09502.jpg) YYZApr09 502.jpg |
![YYZApr09 608.jpg](https://a4.pbase.com/o4/93/329493/1/121396398.QbcoAx71.YYZApr09608.jpg) YYZApr09 608.jpg |
![Albertosaurus libratus, late Cretaceous (76 million years old)](https://a4.pbase.com/o4/93/329493/1/121396387.tgS5y0ut.YYZApr09586.jpg) Albertosaurus libratus, late Cretaceous (76 million years old) |
![Deinonychus antirrhopus, early Cretaceous (112 million years old)](https://a4.pbase.com/o4/93/329493/1/121396388.LqMGczrb.YYZApr09588.jpg) Deinonychus antirrhopus, early Cretaceous (112 million years old) |
![Deinonychus antirrhopus](https://a4.pbase.com/o4/93/329493/1/121396389.aVkU4BHV.YYZApr09589.jpg) Deinonychus antirrhopus |
![Eurhinosaurus longirostris (Ichthyosaur), Early Jurassic (180 million years old)](https://a4.pbase.com/o4/93/329493/1/121396390.5Aam5DUR.YYZApr09591.jpg) Eurhinosaurus longirostris (Ichthyosaur), Early Jurassic (180 million years old) |
![Lambeosaurus lambei, Late Cretaceous Alberta (75 million years old)](https://a4.pbase.com/o4/93/329493/1/121396391.Me6UQoe4.YYZApr09595.jpg) Lambeosaurus lambei, Late Cretaceous Alberta (75 million years old) |
![Parasaurolophus walkeri, Late Cretaceous Alberta (76 million years old)](https://a4.pbase.com/o4/93/329493/1/121396393.fvXdT8kw.YYZApr09597.jpg) Parasaurolophus walkeri, Late Cretaceous Alberta (76 million years old) |
![YYZApr09 599.jpg](https://a4.pbase.com/o4/93/329493/1/121396394.SO3HOYBs.YYZApr09599.jpg) YYZApr09 599.jpg |
![Stegosaurus, late Jurassic (150 million years old)](https://a4.pbase.com/o4/93/329493/1/121396395.UvIMfyPu.YYZApr09602.jpg) Stegosaurus, late Jurassic (150 million years old) |
![Allosaurus fragilis, late Jurassic (150 million years old)](https://a4.pbase.com/o4/93/329493/1/121396396.v3hWid0p.YYZApr09605.jpg) Allosaurus fragilis, late Jurassic (150 million years old) |
![Tyrannosaurus rex, late Cretaceous (66 million years old)](https://a4.pbase.com/o4/93/329493/1/121396399.rcJaT1tU.YYZApr09609.jpg) Tyrannosaurus rex, late Cretaceous (66 million years old) |
![Tyrannosaurus rex, late Cretaceous (66 million years old)](https://a4.pbase.com/o4/93/329493/1/121396400.s5ne5ZiC.YYZApr09610.jpg) Tyrannosaurus rex, late Cretaceous (66 million years old) |
![Tyrannosaurus rex, late Cretaceous (66 million years old)](https://a4.pbase.com/o4/93/329493/1/121396397.Bn5PxoT3.YYZApr09607.jpg) Tyrannosaurus rex, late Cretaceous (66 million years old) |
![Triceratops horridus, late Cretaceous (66 million years old)](https://a4.pbase.com/o4/93/329493/1/121396401.uDkjYdwY.YYZApr09612.jpg) Triceratops horridus, late Cretaceous (66 million years old) |
![Desmostylus hesperus, middle Miocene (15 million years old)](https://a4.pbase.com/o4/93/329493/1/121396402.mqq4NbD4.YYZApr09614.jpg) Desmostylus hesperus, middle Miocene (15 million years old) |
![Toxodon platensis, early Pleistocene (1.5 million years old)](https://a4.pbase.com/o4/93/329493/1/121396403.kdCj62V3.YYZApr09616.jpg) Toxodon platensis, early Pleistocene (1.5 million years old) |
![Eremotherium laurillardi (Giant Ground Sloth), late Pleistocene (100,000 years old)](https://a4.pbase.com/o4/93/329493/1/121396404.7IF7wF1k.YYZApr09618.jpg) Eremotherium laurillardi (Giant Ground Sloth), late Pleistocene (100,000 years old) |
![Glyptodon clavipes, late Pleistocene (50,000 years old)](https://a4.pbase.com/o4/93/329493/1/121396405.LOA3rUBN.YYZApr09620.jpg) Glyptodon clavipes, late Pleistocene (50,000 years old) |
![Mammut americanum, late Pleistocene (12,000 years old)](https://a4.pbase.com/o4/93/329493/1/121396406.wBk2S206.YYZApr09623.jpg) Mammut americanum, late Pleistocene (12,000 years old) |
![Cervalces scotti, late Pleistocene (12,000 years old)](https://a4.pbase.com/o4/93/329493/1/121396407.Zdq9gkcT.YYZApr09625.jpg) Cervalces scotti, late Pleistocene (12,000 years old) |
![Mammoth, Stag-Moose and Castoroides ohioensis (giant beaver)](https://a4.pbase.com/o4/93/329493/1/121396408.CqlvQUiv.YYZApr09627.jpg) Mammoth, Stag-Moose and Castoroides ohioensis (giant beaver) |
![Arctodus simus (short-faced bear) with crocodilian skulls](https://a4.pbase.com/o4/93/329493/1/121396409.glPoCvMT.YYZApr09628.jpg) Arctodus simus (short-faced bear) with crocodilian skulls |
![Arctodus simus (short-faced bear), late Pleistocene (28,000 years old)](https://a4.pbase.com/o4/93/329493/1/121396410.fH8OOv94.YYZApr09629.jpg) Arctodus simus (short-faced bear), late Pleistocene (28,000 years old) |
![Arctodus simus (short-faced bear)](https://a4.pbase.com/o4/93/329493/1/121396411.gGARDIAv.YYZApr09631.jpg) Arctodus simus (short-faced bear) |
![American Mammoth and Moose-Stag](https://a4.pbase.com/o4/93/329493/1/121396412.giVEZKKz.YYZApr09632.jpg) American Mammoth and Moose-Stag |
![Sabre-tooth cat](https://a4.pbase.com/o4/93/329493/1/121396418.dmWwMf8o.YYZApr09643.jpg) Sabre-tooth cat |
![Royal Albatross](https://a4.pbase.com/o4/93/329493/1/121396413.HYPJvsdy.YYZApr09633.jpg) Royal Albatross |
![Eastern woodland scene](https://a4.pbase.com/o4/93/329493/1/121396414.3kn0PKCk.YYZApr09635.jpg) Eastern woodland scene |
![Bat cave](https://a4.pbase.com/o4/93/329493/1/121396415.oaa1Uht2.YYZApr09639.jpg) Bat cave |
![Bat cave](https://a4.pbase.com/o4/93/329493/1/121396416.c3N8QaEd.YYZApr09640.jpg) Bat cave |
![Crimson Rosella](https://a4.pbase.com/o4/93/329493/1/121396417.s6DSdjnK.YYZApr09641.jpg) Crimson Rosella |
![Amethyst](https://a4.pbase.com/o4/93/329493/1/121396419.3GckZBYz.YYZApr09645.jpg) Amethyst |
![Amethyst](https://a4.pbase.com/o4/93/329493/1/121396420.LvqBnOMp.YYZApr09647.jpg) Amethyst |
![Mesolite and Cavansite](https://a4.pbase.com/o4/93/329493/1/121396422.ClhfpMbi.YYZApr09648.jpg) Mesolite and Cavansite |
![Wulfenite](https://a4.pbase.com/o4/93/329493/1/121396423.Sg5LJ35m.YYZApr09649.jpg) Wulfenite |
![Wulfenite](https://a4.pbase.com/o4/93/329493/1/121396424.0QvlJPPF.YYZApr09650.jpg) Wulfenite |
![Liroconite, Erythrite, Annabergite](https://a4.pbase.com/o4/93/329493/1/121396425.XHMwkG29.YYZApr09651.jpg) Liroconite, Erythrite, Annabergite |
![Azurite](https://a4.pbase.com/o4/93/329493/1/121396426.FbudSMsT.YYZApr09652.jpg) Azurite |
![Calcite](https://a4.pbase.com/o4/93/329493/1/121396427.AbOgfTa9.YYZApr09654.jpg) Calcite |
![Colors of Tourmailne](https://a4.pbase.com/o4/93/329493/1/121396428.FSHJTOpY.YYZApr09656.jpg) Colors of Tourmailne |
![Tourmaline Crystal](https://a4.pbase.com/o4/93/329493/1/121396429.zhnJN1Hv.YYZApr09659.jpg) Tourmaline Crystal |
![Ruby Crystal](https://a4.pbase.com/o4/93/329493/1/121396430.AOrqBTLs.YYZApr09662.jpg) Ruby Crystal |
![Colorless Calcite Iceland Spar](https://a4.pbase.com/o4/93/329493/1/121396431.CLhbY1Mj.YYZApr09671.jpg) Colorless Calcite "Iceland Spar" |
![Colorless Calcite Iceland Spar](https://a4.pbase.com/o4/93/329493/1/121396432.dAABX2Ku.YYZApr09672.jpg) Colorless Calcite "Iceland Spar" |
![Emerald from Muzo Mine, Colombia](https://a4.pbase.com/o4/93/329493/1/121396433.tKx1g7Bc.YYZApr09674.jpg) Emerald from Muzo Mine, Colombia |