oil shale ordovician period triplochiton scleroxcylon triplochiton teredinid
a shell with a thick, dark, stripe, or band a reddish brown carapace a shell with a dark, stripe, or band black or blackish-brown shell a brownish back, with blackish streaks
dark or brown carapace (top shell) the presence of fossils or other artifacts reddish-brown carapace (shell) elongated, bumpy, ribbed, dark greenish-yellow or yellowish-brown rind may be solid, striped, or printed
a piece of paper with a small hole in it
fossilized dark or brown carapace (top shell) the presence of fossils or other artifacts light brown slatted reddish-brown carapace (shell)
fossil which has the fossil may be of a plant, animal, or bacterial organism fossil which may appear as an impression, cast, or mold of the original organism trilobite which has shell-like exoskeleton fossil which has usually found in sedimentary rock trilobite which has two-lobed tail
trilobite which has shell-like exoskeleton trilobite which has two-lobed tail trilobite which has long antennae trilobite which has segmented body trilobite which has compound eyes
trilobite fossil chiton decapoda lamniformes
trilobite fossil chiton armadillo fibrous
trilobite which has short, jointed legs trilobite which has segmented body trilobite which has shell-like exoskeleton trilobite which has two-lobed tail trilobite which has long antennae
trilobite which has segmented body trilobite which has short, jointed legs trilobite which has two-lobed tail trilobite which has shell-like exoskeleton trilobite which has long antennae