urolith genus arcella genus erechtite nephrolith xenotime
a dark grey skin with a white underside black-and-white striped chest body covered with small, dark scales brownish with black and white stripes on the head small, dark, with a small white beard
large, black and white striped head large, ridged scales on the back of the head black head with white stripe above its eyes grey head with black vertical stripes across the eyes a shaft with ridges or teeth
a rock with a black background
ashphalt mineral-laced large, black and white striped head large, ridged scales on the back of the head black head with white stripe above its eyes
trilobite which has segmented body trilobite which has two-lobed tail fossil which may be imprinted in the rock or may have been replaced by minerals trilobite which has long antennae fossil which has usually found in sedimentary rock
trilobite which has segmented body trilobite which has two-lobed tail trilobite which has long antennae trilobite which has shell-like exoskeleton trilobite which has short, jointed legs
trilobite ammonoidea fossil mustelinae auriculariales
trilobite fossil chiton oillamp individual
trilobite which has short, jointed legs trilobite which has segmented body trilobite which has two-lobed tail trilobite which has shell-like exoskeleton fossil which may appear as an impression, cast, or mold of the original organism
trilobite which has shell-like exoskeleton trilobite which has short, jointed legs trilobite which has segmented body trilobite which has two-lobed tail trilobite which has compound eyes