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Mary H. Schweitzer

Dr. Mary Schweitzer Professor
Mary Schweitzer's WolfBlog
NCSU's Paleontology website
mhschwei@ncsu.edu

B.S. Communicative Disorders, Utah State University, 1977

Certificate, Secondary Education/ Broadfield Science, Montana State University, 1988

PhD, Biology, Montana State University, 1995

TEACHING AND RESEARCH AREAS
Molecular Paleontology: Preservation, detection and interpretation of original molecular fragments in well- preserved fossil specimens

Molecular diagenesis and taphonomy: The examination of exceptionally well preserved fossils-those with soft tissues, color patterns, or original hard-part mineralogy or molecular signals preserved. Why are they preserved that way, and what are the biogeochemical conditions that led to such preservation?

Evolution of physiological and reproductive strategies in dinosaurs and their bird descendants. Were dinosaurs warm-blooded, cold-blooded or something in-between?

Astrobiology: Can we use the tools of molecular paleontology to detect biomarkers not only in fossils but also in extraterrestrial samples? Did life never evolve on other planets? Did it evolve and then go extinct? Or is it thriving now?

SELECTED PUBLICATIONS:
Schweitzer MH, Zheng, W. Cleland TP, Bern Marshall.  2013.  Bone 52(1): 414-423.

Cadena E*, Schweitzer MH, 2012. Variation in osteocytes morphology vs bone type in turtle shell and their exceptional preservation from the Jurassic to the present. Bone 51:614-620.

San Antonio JD, Schweitzer MH, Jensen ST, Kalluri R, Buckley M, Orgel JPRO. 2011. Dinosaur peptides suggest mechanisms of protein survival. PLOS One 6(6): e20381.

Cleland TP*, Stoskopf MK, Schweitzer MH. 2011. Histological, chemical, and morphological reexamination of the 'heart' of a small late Cretaceous Thescelosaurus. Naturwissenschaften 98 (3):203-211.

Schweitzer MH. 2011. Soft Tissue Preservation in Mesozoic Vertebrates. Annual Reviews of Earth and Planetary Sciences, 39:187-216, doi 10.1146

Zheng W, Schweitzer MH. Chemical analyses of fossil bone. 2012. IN: Forensic Microscopy for Skeletal Tissues: Methods and Protocols.  Methods in Molecular Biology, vol. 915 Chapter 10, Lynne S. Bell, Editor

Green JL*, Schweitzer MH, Lamm E-T. Limb bone histology and growth in Placerias hesternus (therapsida: anomodontia) from the Upper Triassic of North America. 2010. Paleonotology 53(2):347-364.

Schweitzer MH, Zheng W, Organ CL, Avci R, Suo Z, Freimark LM, Lebleu VS,. Duncan MB, Vander Heiden MG, Neveu JM, Lane WS, Cottrell JS, Horner JR, Cantley LC, Kalluri R Asara JM. 2009.  Biomolecular characterization and protein sequences of the Campanian hadrosaur Brachylophosaurus canadensis. Science. 324:626-629.

Schweitzer MH, Avci R., Collier T., Goodwin M. 2008. Microscopic, chemical and molecular methods for examining fossil specimens. Palevol 7:159-184.

Organ C.L., Schweitzer M.H., Zheng W., Freimark L.M., Cantley L.C., Asara, J.M. 2008. Molecular phylogenetics of mastodon and Tyrannosaurus rex. Science 320:499.

Asara JM, Schweitzer MH, Phillips MP, Freimark LM, Cantley LC. 2007. Protein sequences from mastodon (Mammudt americanum) and dinosaur (Tyrannosaurus rex) revealed by mass spectrometry. Science. 316:280-285.  

Asara J.M., Garavelli J.S., Slatter D.A., Schweitzer M.H., Freimark, L.M., Phillips M., Cantley L.C. 2007b. Interpreting sequences from mastodon and Tyrannosaurus rex. Science 317:1324-1325.

Pevsner P, Kim, S, Ng, J. 2008.  Comment on “Protein Sequences from mastodon and Tyrannosaurus rex Revealed by Mass Spectrometry."  Science 321:1040b, and response:

Asara, JM, Schweitzer MH, Cantley LC, Cottrell JS. 2008. Response to comment on 'Protein Sequences from Mastodon and Tyrannosaurus rex Revealed by Mass Spectrometry'. Science 321: 1040c

Buckley M. et al. 2007.  Comment on “Protein Sequences from Mastodon and Tyrannosaurus rex Revealed by Mass Spectrometry”  Science 319:33c. and response:

Asara JM, Schweitzer MH. 2008. Response to comment on 'Protein Sequences from Mastodon and Tyrannosaurus rex Revealed by Mass Spectrometry'. Science 319:33d.

Schweitzer MH, Suo, Z, Avci, R. Asara JM, Allen MA, Teran Arce F. Horner JR. 2007. Analyses of soft tissue from Tyrannosaurus rex suggest the presence of protein. Science 316:277-280.

Schweitzer MH, Wittmeyer JL, Horner JR, 2005.  Gender-specific reproductive tissue in ratites and Tyrannosaurus rex.  Science 308:1456-1460

Schweitzer MH, Wittmeyer JL, Horner JR, Toporski JB.  2005.  Soft tissue vessels and cellular preservation in Tyrannosaurus rex.  Science 307:1952-1955.

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