2007/03/01 by Rodney M. Feldmann, Carrie E. Schweitzer · 1 citation
Environmental Science · Earth and Planetary Sciences · #Crustacean biology and ecology #Marine Biology and Ecology Research #Marine and fisheries research
paper · doi:10.2992/0097-4463(2007)76[39:sdieae]2.0.co;2
openalex publication_date 2007/03/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/06/11
Recognition of two different configurations of the abdomen in the Eocene raninid crab, Lophoranina bishopi Squires and Demetrion, 1992, from the Tepetate Formation in Baja California Sur, Mexico, represents the first published notice of sexual dimorphism in fossil representatives of the Ranininae. Examination of extant representatives of the six extant subfamilies of Raninidae documents sexually dimorphic characters of the abdomen throughout the family, although the style and degree of development of dimorphic features varies throughout the subfamilies. Recognition of patterns of sexual dimorphism of abdomina in the Raninidae is particularly useful in the fossil record where conventional means of determining gender are not preserved.