dinosaur: any chiefly terrestrial, herbivorous or carnivorous reptile of the extinct orders Saurischia and Ornithischia, from the Mesozoic Era, certain species of which are the largest known land animals.
noun: Some kids like their dinosaur toys to be more interactive.
fish: any of various cold-blooded, aquatic vertebrates, having gills, commonly fins, and typically an elongated body covered with scales.
noun: I ate very small fish for supper.
horseshoe: a U-shaped metal plate, plain or with calks, nailed to a horse's hoof to protect it from being injured by hard or rough surfaces.
noun: It was a great horseshoe crab the first one I had ever seen.
crab: any decapod crustacean of the suborder Brachyura, having the eyes on short stalks and a short, broad, more or less flattened body, the abdomen being small and folded under the thorax.
noun: Alaskan king crab fishing jobs pose particular obstacles because of the unusual working conditions.
sponge: to wipe or rub with or as with a wet sponge, as to moisten or clean.
noun: The fishing and sponge industries are important.
trilobite: any aquatic, chiefly marine animal of the phylum Porifera, having a porous structure and usually a horny, siliceous or calcareous internal skeleton or framework, occurring in large, sessile colonies.
noun: This fossil trilobite from the Atlas Mountains is 7, nearly 8, centimeters long.
amber: a pale yellow, sometimes reddish or brownish, fossil resin of vegetable origin, translucent, brittle, and capable of gaining a negative electrical charge by friction and of being an excellent insulator: used for making jewelry and ot
noun: The liquid was a light amber color and had bubbles in it.
coal: a black or dark-brown combustible mineral substance consisting of carbonized vegetable matter, used as a fuel.:Compare anthracite, bituminous coal, lignite.
noun: Coal is found in the ground, too.
mineral: any of a class of substances occurring in nature, usually comprising inorganic substances, as quartz or feldspar, of definite chemical composition and usually of definite crystal structure, but sometimes also including rocks formed
noun: The mineral wealth of the duchy is not inconsiderable.
mud: wet, soft earth or earthy matter, as on the ground after rain, at the bottom of a pond, or along the banks of a river; mire.
noun: Sure, but the only thing in there is mud cats.
sand: Sand is defined as small, loose, gritty particles of rock, or an area with these small particles.
noun: The white sand was almost as blinding as snow.
sediment: the matter that settles to the bottom of a liquid; lees; dregs.
noun: The river carries its sediment westward.
tar: any of various dark-colored viscid products obtained by the destructive distillation of certain organic substances, as coal or wood.
noun: The frozen sea beneath her feet was the color of tar
cast: A stroke of fortune or fate; a lot.
noun: They're putting a cast on her leg right now.
footprint: a mark left by the shod or unshod foot, as in earth or sand.
noun: I am happy to discuss my carbon footprint with the hon.
fossil: any remains, impression, or trace of a living thing of a former geologic age, as a skeleton, footprint, etc.
noun: archeologist find fossils
