Rocks and minerals are important to everyone, every day. We see rocks everywhere – both as a part of the Earth, and used by society in construction and manufacturing. All of the raw materials we use to make things are either grown (plants and animals) or mined (rocks and minerals).
Fossils Ozarks Paleontology Hemithecellids Hemithecellids The fossil of a hemithecellid, which was probably a segmented mollusk, can appear as plates or valves that are elongate, arrow-head, or tapering in form. The valves of these mollusks vary in shape and ornamentation. Some paleontologists classify these early Paleozoic “plated mollusks” as primitive chitons (amphinuerans).