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 Invertebrates Facebook Group.

Selected Peer-Reviewed Publications

  • Weaver, P. G. & Williams, B. W. (2017). A new genus and species of entocytherid ostracod (Ostracoda: Entocytheridae) from the John Day River Basin of Oregon, U.S.A., with a key to genera of the subfamily Entocytherinae. Zootaxa, 4273(4): 576-596.
  • Shelton, K., Weaver, P. G., and Williams, B. W. (2016). New records of entocytherid ostracods from New York and New Jersey. Northeastern Naturalist, 23(4): 525-531.
  • Weaver, P. G. & Williams, B. W. (2016). Observations of false mating behavior in entocytherid ostracods from the northwestern United States. Invertebrate Biology, 135(3): 252-258.
  • Doguzhaeva, L. A., Weaver, P. G., and Ciampaglio, C. N. (2014). A unique late Eocene coleoid cephalopod Mississaepia from Mississippi, USA: new data on cuttlebone structure, and their phylogenetic implications. Acta Palaeontologica Polonica, 59(1): 147-162.
  • Weaver, P. G., Ciampaglio, C. N., and Sadorf, E. M. (2012). Rhyncholites and conchorhynch (calcified nautiloid beaks) from the Eocene (Lutetian/Priabonian) Castle Hayne Formation, southeastern North Carolina. Neues Jahrbuch für Geologie und Paläontologie-Abhandlungen, 264(1): 61-75.
Complete Publications (PDF)


Fields of Research