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United States naturalist (born in Switzerland) who studied fossil fish; recognized geological evidence that ice ages had occurred in North America (1807-1873) Agassiz , Jean Louis Rodolphe Agassiz , Louis Agassiz
hard yellowish to brownish translucent fossil resin; used for jewelry amber
shell, coiled fossil ammonite
fossil shell of extinct mollusk ammonite
one of the coiled chambered fossil shells of extinct mollusks ammonite , ammonoid
primitive reptile-like fossil birds of the Jurassic or early Cretaceous Archaeornithes , subclass Archaeornithes
national park in South Dakota having multicolored peaks and spires resulting from erosion; fossil sites Badlands National Park
living fossil or so-called `green dinosaur'; genus or subfamily of primitive nut-bearing trees thought to have died out 50 million years ago; a single specimen found in 1994 on Mount Bartle Frere in eastern Australia; not yet officially named Bartle Frere , genus Bartle-Frere , green dinosaur
conical calcareous fossil tapering to a point at one end and with a conical cavity at the other end containing (when unbroken) a small chambered phragmocone from the shell of any of numerous extinct cephalopods of the family Belemnitidae belemnite
family of fossil gymnospermous plants of the Carboniferous Bennettitaceae , family Bennettitaceae
fossil gymnospermous plants of the Carboniferous Bennettitales , order Bennettitales
fossil dating technique carbon dating
fossil fuel consisting of carbonized vegetable matter deposited in the Carboniferous period coal
fossil fuel coal
copal found usually as a fossil congo copal , congo gum
tiny fossil cone-shaped tooth of a primitive vertebrate of order Conodonta conodont
fossil excrement; petrified dung coprolite
any fish of the order Crossopterygii; most known only in fossil form crossopterygian , lobe-finned fish , lobefin
fossil gymnospermous trees or climbing plants from the Devonian: seed ferns Cycadofilicales , Lyginopteridales , order Cycadofilicales , order Lyginopteridales
large fast-growing Chinese monoecious tree having flat bright-green deciduous leaves and small globular cones; commonly cultivated in United States as an ornamental; known as a fossil before being discovered in China dawn redwood , metasequoia , Metasequoia glyptostrodoides
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