May 6, 2022
Through careful study of exceptional specimens, graduate student Sarah Losso and faculty-curator Javier Ortega-Hernández show that some trilobites mated very much like extant horseshoe crabs thanks to their highly modified clasper-like limbs.
"Claspers in the mid-Cambrian Olenoides serratus indicate horseshoe crab–like mating in trilobites", published in Geology
"Before There Were Birds or Bees, This Is How Trilobites Made Babies", New York Times
See also: Invertebrate Paleontology