Research Interests and Responsibilities

Cheilostome bryozoan taxonomy and digital imaging; manage and maintain the Paleozoic and post-Paleozoic bryozoan collections; Research Assistant to Alan H. Cheetham (Senior Scientist, Emeritus).
Digital imaging of planktic Foraminifera; Research Assistant to Brian Huber (Curator).

Publications

Cheetham, A.H., Sanner, J., Jackson, J.B.C., Ventocilla, Y., and Herrera, A. 1998. Bryozoans. Neogene Marine Biota of Tropical America, http://nmita.geology.uiowa.edu.

Cheetham, A.H., Jackson, J.B.C., Sanner, J., and Ventocilla, Y. 1999. Neogene cheilostome Bryozoa of tropical America: comparison and contrast between the Central American isthmus (Panama, Costa Rica) and the north-central Caribbean (Dominican Republic), p. 159-192. In L.S. Collins and A.G. Coates (eds.), The Neogene of the Isthmus of Panama: a paleobiotic survey of the Caribbean coast. Bulletins of American Paleontology, 357, 351p.

Cheetham, A.H., Jackson, J.B.C., and Sanner, J. 2001. Evolutionary significance of sexual and asexual modes of propagation in the Neogene species of the bryozoan Metrarabdotos in tropical America. Journal of Paleontology, 75(3):567-577.

Cheetham, A.H., Sanner, J., Taylor, P.D., and Ostrovsky, A.N. 2006. Morphological differentiation of avicularia and the proliferation of species in mid-Cretaceous Wilbertopora Cheetham, 1954 (Bryozoa: Cheilostomata). Journal of Paleontology, 80(1):49-71.

Herrera-Cubilla, A., Dick, M.H., Sanner, J., and Jackson, J.B.C. 2006. Neogene Cupuladriidae of tropical America. I: Taxonomy of Recent Cupuladria from opposite sides of the Isthmus of Panama. Journal of Paleontology, 80(2):245-263.

Cheetham, A.H., Sanner, J., and Jackson, J.B.C. (2007, in press). Metrarabdotos and related genera (Bryozoa: Cheilostomata) in the Late Paleogene and Neogene of tropical America. Journal of Paleontology, Supplement to 81(1)