Differences in the way males and females look or behave are common in animals. However, discrete variation within sexes (sex-limited polymorphism) also occurs in several vertebrate and invertebrate li
The study of sambaquis (ancient shell mounds) in conservation paleobiology is a complicated subject, especially when comparing body sizes of current and past mollusk valves to observe possible changes
Male genitals are highly divergent in animals with internal fertilization. Most studies attempting to explain this diversity have focussed on testing the major hypotheses of genital evolution (the loc
TABLE 5. — Measurements of teleoconch and protoconch of Polynesian species of Parashiela Laseron, 1956, in mm, with minimum-maximum range and mean [standard deviation in square parentheses]; sample si
