Sandstone Amber Deposits Limestone Mineralogy Fossilization Processes Fossilization Gale Crater Bone Beds Chalk Formation Soom Shale Manganese-rich Sandstones Shatter Cones Bonebeds Chemical Processes Fossil Deposits Mudstone and Conglomerate Mudstones Clay-Rich Mudstones Fossil Formation Triassic Period Marine Sediments Volcanic Structures Marine Geology Navajo Sandstone Fluvial Processes Old Red Sandstone Ancient Rocks Meteorite Debris
Peer-reviewed finds refine timelines for key trait emergence, with evidence for a late-Carnian turnover linked to climate.