index fossil epistaxi psilophytale fossilization precambrian eon
fruiting body with gills spiny scales on back a plant-like structure with gills feathers on the back of the head that show red near the base covered with small spines
the presence of fossils or other artifacts spiny ridges along its back long legs with small spines on the tarsi black stripes on the back and tail a crest of spines along its back and head
a piece of metal on a black background
fossilized the presence of fossils or other artifacts spiny ridges along its back long legs with small spines on the tarsi black stripes on the back and tail
trilobite which has two-lobed tail trilobite which has long antennae trilobite which has segmented body fossil which has the remains of a long-dead organism trilobite which has compound eyes
trilobite which has two-lobed tail trilobite which has long antennae trilobite which has segmented body trilobite which has compound eyes trilobite which has short, jointed legs
trilobite fossil mustelinae geoemydidae ankistrodesmus
trilobite fossil plinth chiton individual
trilobite which has two-lobed tail fossil which has the fossil may be of a plant, animal, or bacterial organism trilobite which has short, jointed legs trilobite which has shell-like exoskeleton 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 fossil which has the remains of a long-dead organism