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Gary Rosenberg

Gary Rosenberg, PhD

Professor, Department of Biodiversity, Earth & Environmental Science
Pilsbry Chair of Malacology, ANS
Department of Biodiversity, Earth and Environmental Science
Office: Malacology, ANS
Phone: 215.299.1033

Additional Sites:


  • BS, Geology, Princeton University, 1981
  • PhD, Organismic and Evolutionary Biology, Harvard University, 1989

Curriculum Vitae:

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Research Interests:

My research centers on the magnitude and origin of species-level diversity in the Mollusca. Estimates of the total number of living mollusk species range from less than 100,000 to more than 200,000, but that the actual number known is about 75,000. I use an informatics approach to better document the known diversity of mollusks and to estimate their total diversity. I developed Malacolog, an online database of Western Atlantic marine gastropods, and am an editor for the Mollusca in the World Register of Marine Species. My field work is currently centered in the Philippines, which has the world’s highest diversity of marine mollusks, where I am a Co-PI on the Philippine Mollusk Symbiont ICBG, and in Jamaica, which has one of the most diverse faunas of terrestrial mollusks in the world, for which I have developed an interactive key.


Gary Rosenberg, PhD, is curator of mollusks at the Academy of Natural Sciences. He has published more than 60 peer-reviewed scientific articles, and is the author of the Encyclopedia of Seashells (1992). In 2012, he was president of the American Malacological Society in 2012, hosting its annual meeting in Cherry Hill, New Jersey. He serves on the editorial boards of several journals and is a Commissioner on the International Commission of Zoological Nomenclature, for which he chairs the editorial committee. Currently he is the major professor for four PhD students and serves on the committees of five others. He teaches courses in Evolution, Evolutionary Ecology, and Systematic Biology, and has previously taught Invertebrate Paleontology.

Selected Publications:

  • Batomalaque, G. A. and G. Rosenberg. 2018. Three new species of Zaptyx (Gastropoda: Eupulmonata: Clausiliidae) from the Babuan and Batanes islands, Philippines. Archive für Molluskenkunde 147: 77-86, doi: 10.1127/arch.moll/147/077-086.
  • Sei, M., D. G. Robinson, A. J. Geneva, and G. Rosenberg. 2017. Doubled helix: Sagdoidea is the overlooked sister group of Helicoidea (Mollusca: Gastropoda: Pulmonata). Biological Journal of the Linnean Society 122: 697–728, doi: 10.1093/biolinnean/blx082.
  • Distel, D. L., M. A. Altamia, Z. Lin, J. R. Shipway, A. Hand, I. Forteza, R. Antemano, M. G. J. P. Limbaco, A. G. Tebo, R. Dechavez, J. Albano, G. Rosenberg, G. P. Concepcion, E. W. Schmidt, and M. G. Haygood. 2017. Discovery of chemoautotrophic symbiosis in the giant shipworm Kuphus polythalamia (Bivalvia: Teredinidae) extends wooden-steps theory. Proceedings of the National Academy of Sciences 114(18): E3652–E3658, doi: 10.1073/pnas.1620470114.
  • Uit de Weerd, D., D. G. Robinson and G. Rosenberg. 2016. Evolutionary and biogeographical history of the land snail family Urocoptidae (Gastropoda: Pulmonata) across the Caribbean region. Journal of Biogeography 43: 763–777. doi 10.1111/jbi.12692.
  • Rosenberg, G. 2014 A new critical estimate of named species-level diversity of the recent Mollusca. American Malacological Bulletin 32(2): 308-322. doi: 10.4003/006.032.0204.
  • Rosenberg, G. and R. Salisbury. 2014. Seven new species of Thala (Gastropoda: Costellariidae) from the Indo-Pacific. Proceedings of the Academy of Natural Sciences of Philadelphia163: 179-223. doi 10.1635/053.163.0106.
  • Nekola, J. C. and G. Rosenberg. 2013. Vertigo marciae (Gastropoda: Vertiginidae), a new land snail from Jamaica. Nautilus 127(3): 107–114.
  • Rosenberg, G., E. F. García and F. Moretzsohn. 2009. Gastropods (Mollusca) of the Gulf of Mexico. Pp. 579-699 in D. L. Felder and D. K. Camp, eds., The Gulf of Mexico: Origins, Waters and Marine Life. Texas A&M University Press.
  • Rosenberg, G. and I. V. Muratov. 2006. Status report on the terrestrial Mollusca of Jamaica. Proceedings of the Academy of Natural Sciences of Philadelphia 155: 117-161. doi 10.1635/i0097-3157-155-1-117.1.
  • McClain, C. R., A. G. Boyer and G. Rosenberg. 2006. The Island Rule and the evolution of body size in the deep sea. Journal of Biogeography 33: 1578-1584. doi 10.1111/j.1365-2699.2006.01545.x.
  • Rosenberg, G. 1992. The Encyclopedia of Seashells. Dorset Press, New York. 224 pp., 300+ color illustrations.