fossilist index fossil genus alectoria cyclosporeae fossilology
two openings at the top of the shell a pair of maxillae a hinged plastron (the bottom shell) small, conical crest gills that are attached to the stem
the presence of fossils or other artifacts two hinged shells with a rough exterior spiral-shaped shell dark or brown carapace (top shell) small, snail-like creature
a fossil on a black background
fossilized the presence of fossils or other artifacts dark or brown carapace (top shell) spiracles for breathing two hinged shells with a rough exterior
trilobite which has segmented body trilobite which has long antennae trilobite which has two-lobed tail trilobite which has compound eyes trilobite which has shell-like exoskeleton
trilobite which has segmented body trilobite which has long antennae trilobite which has two-lobed tail trilobite which has compound eyes trilobite which has shell-like exoskeleton
fossil trilobite archaeognatha cretoxyrhina conchiglie
fossil trilobite seashell individual chiton
trilobite which has long antennae trilobite which has short, jointed legs trilobite which has two-lobed tail trilobite which has segmented body trilobite which has shell-like exoskeleton
trilobite which has short, jointed legs trilobite which has long antennae trilobite which has two-lobed tail fossil which may appear as an impression, cast, or mold of the original organism trilobite which has shell-like exoskeleton