Patricia Weaver

Collections Manager, Geology and Paleontology

11 West Jones Street, Raleigh, NC 27601


  • M.S. in Geology, University of Montana, Missoula, MT, 1992
  • B.A. in Geology, Ohio Wesleyan University, Delaware, OH, 1986

Research Interests

Trish's research focuses on fossil and extant coleoid cephalopods. In particular, Trish studies taxonomy of fossil cuttlefish, and biochemistry of fossil and extant squid, octopus and cuttlefish. The bulk of this research involves the chemical and ultrastructural composition of the internal shells of these organisms. The purpose of this research is to understand evolutionary changes within coleoid cephalopods and is conducted in conjunction with her national and international colleagues.

Other research projects deal with the North Carolina Ediacaran biota, soft-bodied creatures that lived during the latest Precambrian Era and representing some of the earliest multicellular life. The latest Precambrian or Ediacaran Period was a time when there were few or no predators and the ocean floors were covered with microbial mats. This unique combination allowed soft-bodied organisms to be preserved. This research is conducted in conjunction with the Curator of Geology, Chris Tacker, to see how the North Carolina biota fits with other similar biotas world-wide and to see what these organisms can tell us about where this piece of North Carolina might have come from.

Research interests also include systematics of Eocene crinoids (sea lilies), Cretaceous and Pliocene echinoids (sea urchins) and Triassic Freshwater bivalves.

Check out our new Invertebrates Facebook Group

Peer-Reviewed Publications

  • Weaver, P.G., Doguzhaeva L.A., Lawver D.R., Tacker R.C., Ciampaglio C.N., Crate J.M., Zheng W., 2011. Characterization of Organics Consistent with ß-Chitin Preserved in the Late Eocene Cuttlefish Mississaepia mississippiensis. PLoS ONE 6(11):e28195.doi:10.1371/journal.pone.0028195
  • Weaver, P.G., Ciampaglio, C.N., Chandler, R.E., 2010. An overview of coleoid cephalopods from the Paleogene and Neogene aged rocks of southern North America. Ferrantia, 59: 204-214.
  • Doguzhaeva, L.A., Weaver, P.G., Ciampaglio, C.N., 2012. A unique late Eocene coleoid cephalopod Mississaepia from Mississippi, USA: new data on cuttlebone morphology, ultrastructure, chemical composition, and their phylogenetic implications. Acta Palaeontologica Polonica. In press.
  • Tacker, R.C., Martin, A.J., Weaver, P.G., Lawver, D.R., 2010. Trace fossils versus body fossils: Oldhamia recta revisited. Precambrian Research, 178 (1): 43-50.
  • Weaver, P.G., McMenamin, M.A.S., Tacker, R.C., 2006. Paleoenvironmental and paleobiogeographical implications of a new Ediacaran body fossil from the Neoproterozoic Carolina Terrane, Stanly Co., North Carolina. Precambrian Research, 105:123-135.


Fields of Research