More on Dr. Ewers' work can be found at https://onlinelibrary.wiley.com/doi/abs/10.1111/mec.13593; note that this collection is augmented by the .xlsx (Microsoft Excel) data sheet that interrelates all the specimens by which horseshoe crab, turtle, or other host they were on; by sex (male or hermaphrodite); by date and location, and more.
Collection SummaryDr. Christine Ewers' collection of more than 6000 turtle barnacles (Chelonibia testudinaria) as part of a study into the evolutionary stability of sex strategies in animals.