trilobite genus anomalop order eurypterida cambrian silurian
spiny, leathery skin with grooves or ridges fruiting body with gills a row of tentacles or antennae a large, clawed, long fore-foot
spiny ridges along its back the presence of fossils or other artifacts a crest of spines along its back and head spines or ridges on the exoskeleton large, ridged scales on the back of the head
a rock with a black background
spiny ridges along its back fossilized the presence of fossils or other artifacts a crest of spines along its back and head spines or ridges on the exoskeleton
trilobite which has long antennae trilobite which has segmented body trilobite which has two-lobed tail trilobite which has short, jointed legs trilobite which has shell-like exoskeleton
trilobite which has long antennae trilobite which has segmented body trilobite which has two-lobed tail trilobite which has short, jointed legs trilobite which has shell-like exoskeleton
trilobite fossil gammarus mustelinae ankistrodesmus
trilobite fossil chiton isopod footprint
fossil which may appear as an impression, cast, or mold of the original organism footmark which is a human or animal footprint fossil which has the fossil may be of a plant, animal, or bacterial organism fossil which has usually found in sedimentary rock fossil which may be imprinted in the rock or may have been replaced by minerals
fossil which may appear as an impression, cast, or mold of the original organism trilobite which has short, jointed legs trilobite which has segmented body trilobite which has two-lobed tail trilobite which has long antennae