amber:hard translucent fossilized resin produced by extinct coniferous trees of the Tertiary period, typically yellowish in color.

crab: a animal but he has a twezeers

sediment: matter that settles to the bottom of a liquid; dregs.

fossil: animals bone

trilobite:an extinct marine arthropod that occurred abundantly during the Paleozoic era, with a carapace over the forepart, and a segmented hind part divided longitudinally into three lobes.

sponge:a primitive sedentary aquatic invertebrate with a soft porous body that is typically supported by a framework of fibers or calcareous or glassy spicules. Sponges draw in a current of water to extract nutrients and oxygen.

tar:something that is in the streets

footprint:mark left by the passing foot of a person or animal

preserved to keep something as it is

trace :a way do you follow for find something

mold:surface that is used so that something has the best shape made

impression a mark made on the surface on something by pressing a objet into it