News Archives

Horseshoe Crabs Living Through A Crisis

December 15, 2018

Global: In a new study (Shu et al. 2018), we were able to record horseshoe crab tracks from a succession of rocks that spanned the great Permian-Triassic (PT) mass extinction 252 million years ago. Limulids (of course) survived, but we had questions to ask about whether the devastating environmental changes associated with the mass extinction had in any way knocked them sideways. download the pdf.