Stephen, Dan
Title:
dude
Office:
PS 224
Phone:
(801) 863-8584
Fax:
(801) 863-8064
Mail Code:
179
D.A. Stephen -- 2018 CV
Last Updated: 2/1/19 -

DANIEL ASTEPHEN

Associate Professor of Geology

Department of Earth Science

 

 

EDUCATIONAL  BACKGROUND:

  • Doctor of Philosophy in Geology, 2001, Texas A&M University 

Dissertation:  The Impact of Reproductive Strategy on Cephalopod Evolution. 

  • Master of Science in Geology, 1997, University of Arkansas 

Thesis:  Cephalopod Mass Mortality and Gigantism, Middle Carboniferous (Chesterian–Morrowan) Strata, Northern Arkansas. 

  • Bachelor of Science in Geology, 1994, University of Arkansas 

Academic minors in Mathematics and Anthropology. 

 

PROFESSIONAL AFFILIATIONS: 

  • Geological Society of America  
  • National Association of Geoscience Teachers 
  • Paleontological Society (USA)  
  • Palaeontological Association (UK)  
  • International Palaeontological Association  
  • Utah Academy of Arts & Sciences 

 

COURSES  TAUGHT  AT UVU: 

  • GEOL 1010 & 1015 – Introduction to Geology (lecture & lab) 
  • BIOL 1010 – General Biology 
  • GEOL 1220 & 1225 – Historical Geology (lecture & lab) 
  • BIOL/GEOL 202r – Natural History Excursion 
  • ENST 3000 – Introduction to Environmental Studies 
  • BIOL 4500 – Principles of Evolution 
  • BIOL 494r – Biology Senior Seminar 
  • GEOL 4500 – Sedimentary Geology (lecture & lab) 
  • GEOL 4510 – Paleontology (lecture & lab) 
  • BIOL/GEOL 204r/490r – Desert Natural History, Capitol Reef 
  • BIOL/GEOL 204r/490r – Tropical Natural History, Costa Rica 
  • BIOL 489r – Supervised Biology Student Research 
  • GEOL 495r – Supervised Geology Student Research  
  • GEOL 4600 – Geology Summer Field Course 

 

CURRENT  RESEARCH: 

  • Stephen, D.A., and K.G. Bylund. Late Cretaceous nautiloids from the Western Interior Seaway.  [Paper in preparation, to be submitted to: Journal of Paleontology.] 
  • Bylund, K.G., and D.A. Stephen.  Coniacian ammonoid fauna of eastern Utah.  [Paper in preparation, to be submitted to: Palaeontology.] 
  • Stephen, D.A.  Life history strategies in evolutionary time: the impact of reproductive strategy on cephalopod phylogenetic patterns.  [Paper accepted by Paleobiology, but needs to be resubmitted due to elapsed revision time.]  
  • Stephen, D.A.  Variation in cephalopod embryonic morphology.  [Paper accepted by Journal of Paleontology, but needs to be resubmitted due to elapsed revision time.] 
  • Goudemand, N., H. Bucher, A. Brayard, D.A. Stephen, K.G. Bylund,and L. Menlove.  Early Triassic conodonts in central and western Utah.  [Paper in preparation, to be submitted to: Lethaia.] 
  • Stephen, D.A., and W.J. Zinsmeister.  Systematics of the Late Cretaceous nautiloids of Antarctica. [Paper in preparation, to be submitted to: Historical Biology.]  
  • Grossman, E.L., H. Wang, T.E. Yancey, and D.A. Stephen.  Modest seasonality during the assembly of Pangea: evidence from isotopic analyses of brachiopod shells.  [Paper in preparation, to be submitted to: Palaios.]  

 

PEER-REVIEWED PUBLICATIONS: 

  • Thomazo, C., A. Brayard, S. Elmeknassi, E. Vennin, N. Olivier, G. Caravaca, G. Escarguel, E. Fara, K.G. Bylund, J.F. Jenks, D.A. Stephen, B. Kilingsworth, S. Pierre, and P. Cartigny (2019).  Multiple sulfur isotope signals associated with the late Smithian event and the Smithian/Spathian boundary.  Earth Science Reviews [pending final publication information] 
  • Olivier, N., E. Fara, E. Vennin, K.G. Bylund, J. Jenks, G. Escarguel, D.A. Stephen,N. Goudemand, D. Snyder, C. Thomazo, andA. Brayard, (2018).  Late Smithian microbial deposits and their lateral marine fossiliferous limestones (Early Triassic, Hurricane Cliffs, Utah, USA).  Facies64:13.  https://doi.org/10.1007/s10347-018-0526-3
  • Caravaca, G., A. Brayard, E. Vennin, M. Guiraud, , L. Le Pourhiet, A.-S. Grosjean, C. Thomazo, N. Olivier, E. Fara, G. Escarguel, K.G. Bylund, J.F. Jenks, andD.A. Stephen. (2018).  Controlling factors for differential subsidence in the Sonoma Foreland Basin (Early Triassic western USA).  Geological Magazine155(6):1305-1329. 
  • Villier, L., A. Brayard, K.G. Bylund, J.F. Jenks, G. Escarguel, N. Olivier, D.A. Stephen, E. Vennin, and E. Fara (2018). Superstesaster promissorgen. et sp. nov., a new starfish (Echinodermata, Asteroidea) from the Early Triassic of Utah, USA, filling a major gap in the phylogeny of asteroids.  Journal of Systematic Palaeontology, 16(5):395-415, DOI: 10.1080/14772019.2017.1308972. 
  • Grosjean, , A.-S., E. Vennin, N. Olivier, G. Caravaca, C. Thomazo, E. Fara, G. Escarguel, K.G. Bylund, J.F. Jenks, D.A. Stephen, and A. Brayard (2018).  Early Triassic environmental dynamics and microbial development during the Smithian−Spathian transition (Lower Weber Canyon, Utah, USA). Sedimentary Geology363:136−151. 
  • Caravaca, G., C. Thomazo, E. Vennin, N. Olivier, T. Coquerez, G. Escarguel, E. Fara, K.G. Bylund, J.F. Jenks, D.A. Stephen, and A. Brayard. (2017).  Early Triassic fluctuations of the global carbon cycle: new evidence from paired carbon isotopes in the western USA basin.   Global and Planetary Change154:10−22.  
  • Brayard, A., L.J. Krumenacker, J.P. Botting, J. Jenks, K.G. Bylund, E. Fara, E. Vennin, N. Olivier, N. Goudemand, T. Saucede, S. Charbonnier, C. Romano, L. Doguzhaeva, B. Thuy,  M. Hautmann, D.A. Stephen, C. Thomazo, and G. Escarguel. (2017).  Unexpected Early Triassic marine ecosystem and the rise of the Modern evolutionary fauna.  Science Advances.  doi: 10.1126/sciadv.1602159 
  • Thomazo, C, E. Vennin, A. Brayard, I. Bour, O. Mathieu, S. Elmeknassi, N. Olivier, G. Escarguel, K.G. Bylund, J. Jenks, D.A. Stephen, and E. Fara, (2016).  A diagenetic control on the Early Triassic Smithian-Spathian carbon isotopic excursions recorded in the marine settings of the Thaynes Group (Utah, USA).  Geobiology14(3):220-236. 
  • Brayard, A., M. Meier, G. Escarguel, E. Fara, A. Nützel, N. Olivier, K.G. Bylund, J. Jenks, D.A. Stephen, M. Hautmann, E. Vennin, and H. Bucher (2015).  Early Triassic Gulliver gastropods: Spatio-temporal distribution and significance for biotic recovery after the end-Permian mass extinction.  Earth Science Reviews146(1):31-64. 
  • Olivier, N., A. Brayard, E. Vennin, G. Escarguel, E. Fara, K.G. Bylund, J. Jenks, G. Caravaca, andD.A. Stephen(2015).  Evolution of depositional settings in the Torrey area during the Smithian (Early Triassic, Utah, USA) and their significance for the biotic recovery.  Geological Journal51:600-626.  doi: 10.1002/gj.2663 
  • Vennin, E., N. Olivier, A. Brayard, I. Bour, C. Thomazo, G. Escarguel, E. Fara, K.G. Bylund, J. Jenks, D.A. Stephen, and R. Hofmann (2014).  Microbial deposits in the aftermath of the end-Permian mass extinction: a diverging case from the Mineral Mountains (Utah, USA).  Sedimentology62:753-792.  doi: 10.1111/sed.12166 
  • Olivier, N., A. Brayard, E. Fara, K.G. Bylund, J. Jenks, E. Vennin, D.A. Stephen, and G. Escarguel (2014).  Smithian shoreline migrations and depositional settings in Timpoweap Canyon (Early Triassic, Utah, USA).  Geological Magazine151(5):938-955.  
  • Brayard, A., K.G. Bylund, J. Jenks, D.A. Stephen, N. Olivier, G. Escarguel, E. Fara, and E. Vennin, (2013).  Smithian ammonoid faunas from Utah: implications for Early Triassic biostratigraphy, correlation and basinal paleogeography.  Swiss J. Palaeontology132(2):141-219. 
  • Stephen, D.A., K.G. Bylund,P. Garcia, R.D. McShinsky, and H.J. Carter (2012).  Taphonomy of dense concentrations of juvenile ammonoids in the Upper Cretaceous Mancos Shale, east-central Utah, USA.  Geobios45(1):121-128.  
  • Brayard, A., E. Vennin, N. Olivier, K.G. Bylund, J. Jenks, D.A. Stephen, H. Bucher, R. Hofmann, N. Goudemand, and G. Escarguel (2011).  Transient metazoan reefs in the aftermath of the end-Permian mass extinction.  Nature Geoscience4(10):693-697. 
  • Brayard, A., A. Nützel, A. Kaim, G. Escarguel, M. Hautmann, D.A. Stephen, K.G. Bylund, J. Jenks, and H. Bucher (2011).  Gastropod evidence against the Early Triassic Lilliput Effect: Reply.  Geology39:e233. 
  • Stephen, D.A., K.G. Bylund, P.J. Bybee, and W.J. Ream (2010). Ammonoid beds in the Lower Triassic Thaynes Formation of western Utah, USA. Cephalopods – Present and Past, Tokai University Press, Tokyo, Japan, p. 243-252. 
  • Brayard, A., A. Nützel, D.A. Stephen, K.G. Bylund, J. Jenks, and H. Bucher (2010). Gastropod evidence against the Early Triassic Lilliput Effect.  Geology38(2):147-150.  
  • Stephen, D.A., W.L. Manger, and C. Baker (2002). Ontogeny and heterochrony in the middle Carboniferous ammonoid Arkanites relictus(Quinn, McCaleb, and Webb) from northern Arkansas.  Journal of Paleontology76(5):810-821. 
  • Stephen, D.A., and R.J. Stanton, Jr. (2002).  Impact of reproductive strategy on cephalopod evolution. Berichte der Geologischen Bundesanstalt, Wien, 57:151-155. 
  • Manger, W.L., L.K. Meeks, and D.A. Stephen(1999).  Pathologic gigantism in Middle Carboniferous cephalopods, southern midcontinent, United States.  Advancing Research on Living and Fossil Cephalopods, Plenum Pub., p. 77-89.  
  • Manger, W.L., D.A. Stephen, and L.K. Meeks (1999).  Possible cephalopod reproductive mass mortality reflected by Middle Carboniferous assemblages, Arkansas, southern United States.  Advancing Research on Living and Fossil Cephalopods, Plenum Pub., p. 345-364. 
  • Miller, D.M., P.A. Moore, Jr., D.A. Edwards, D.A. Stephen, and E.E. Gbur (1993). Determination of water soluble phosphorous in soil.  Ark. Farm Research, 42(4):10.  

 

SELECTED  CONFERENCE  ABSTRACTS: 

  • Jenks, J., D.A.Stephen, A. Brayard, and H. Bucher(2014).  Unusual umbilical modification in a Middle Smithian (Early Triassic) ammonoid from Crittenden Springs, Elko County, Nevada. 9th International Cephalopod Symposium, Zürich, Switzerland: Cephalopods — Present and Past, Abs. with Prgms.  
  • Brayard, A., K.G. Bylund,J. Jenks, D.A.Stephen, N. Olivier, G. Escarguel, E. Fara, and E. Vennin(2014).  New Smithian (Lower Triassic) ammonoid zonation from Utah (USA).  9th International Cephalopod Symposium, Zürich, Switzerland: Cephalopods — Present and Past, Abs. with Prgms.  
  • Fara, E., A. Brayard, G. Escarguel, M. Meier, N. Olivier, K.G. Bylund, J. Jenks, D.A. Stephen, A. Nützel, M. Hautmann, E. Vennin, and H. Bucher(2014).  Body-size distribution of Early Triassic gastropods: macroevolutionary pattern or biased signal? EGU Gen.Ass., Geophys.Res.Abs
  • Caravaca, G., N. Olivier, A. Brayard, E. Vennin, G. Escarguel, E. Fara, K.G. Bylund, J. Jenks, and D.A. Stephen(2014).  Facies and depositional settings during the Smithian in the Torrey area (Early Triassic, Utah, USA).EGU Gen.Ass., Geophys.Res.Abs
  • Stephen, D.A., A. Brayard, N. Olivier, E. Vennin, K.G. Bylund, J. Jenks, G. Escarguel, E. Fara, D. Snyder, and G.D. Stanley Jr., (2013).  Early Triassic metazoan reefs from the western USA. GSA Abs. with Prgms., v. 45, no. 7, p. 883. 
  • Bour, I., E. Vennin, C. Thomazo, A. Brayard, N. Olivier, G. Escarguel, K.G. Bylund, J. Jenks, and D.A. Stephen(2013).  Microbialites and geochemistry of the Early Triassic enigma. EGU Gen.Ass., Geophys.Res.Abs., v. 15, EGU2013-5877-3. 
  • Brayard, A., G.D. Stanley Jr., E. Vennin, N. Olivier, K.G. Bylund, J. Jenks, D.A. Stephen, R. Hofmann, N. Goudemand, and G. Escarguel (2012).  Transient metazoan reefs in the aftermath of the end-Permian mass extinction. GSA Abs. with Prgms., v. 44, no. 7, p. 402. 
  • Stephen, D.A., and K.G. Bylund(2010).  Taphonomy of dense concentrations of juvenileammonoids in the Mancos Shale in east-central Utah, USA. 8th International Cephalopod Symposium, Dijon, France: Cephalopods — Present and Past, Abs. with Prgms., p. 93.  
  • Bylund, K.G., and D.A. Stephen(2010).  Coniacian (Late Cretaceous) ammonoid faunaof eastern Utah, USA.  8th International Cephalopod Symposium, Dijon, France: Cephalopods — Present and Past, Abs. with Prgms., p. 115.
  • Stephen, D.A., and K.G. Bylund(2010).  Late Cretaceous nautiloids from eastern Utah, USA. 8th International Cephalopod Symposium, Dijon, France: Cephalopods — Present and Past, Abs. with Prgms., p. 150. 
  • Bylund, K.G., D.A. Stephen, A. Brayard, H. Bucher, J. Jenks, and R.D. McShinsky (2009).  Ammonoids of the Lower Triassic Thaynes Group in the Pahvant Range, Utah.  GSA Abs. with Prgms., v. 41, no. 6, p. 38. 
  • Stephen, D.A., K.G. Bylund, A. Brayard, and H. Bucher (2009).  Lower Triassic ammonoid biostratigraphy of central and western Utah.  9th North American Paleontological Convention: Cincinnati Museum Center, Scientific Contributions, No. 3, p. 200-1. 
  • Stephen, D.A., L. Menlove, N. Goudemand, and A. Brayard (2009). Early Triassic conodonts in central and western Utah. 9th North American Paleontological Convention: Cincinnati Museum Center, Scientific Contributions, No. 3, p. 201-2. 
  • Stephen, D.A., C.L. Stephen, R. Van Buren, and H. Truong (2009).  Capitol Reef Field Station: Past, Present, and Future.  GSA Abs. with Prgms., v. 41, no. 6, p. 47. 
  • Stephen, D.A., K.G. Bylund, P.J. Bybee, and W.J. Ream (2007) Ammonoid mass mortality beds in the Lower Triassic Thaynes Formation of western Utah, USA. 7th International Cephalopod Symposium, Sapporo, Japan: Cephalopods — Present and Past, Abs. with Prgms., p. 33.  
  • Stephen, D.A., and W.J. Zinsmeister (2004)  Systematics of the Late Cretaceous nautiloids of Antarctica.  6th International Cephalopod Symposium, Fayetteville:Cephalopods — Present and Past, Abs. with Prgms., p. 145-6.  
  • Stephen, D.A.(2001)  The impact of reproductive strategy on cephalopod evolution.  7th North American Paleontological Convention: PaleoBios, Vol. 21, supp. to no. 2, p. 121.  
  • Stephen, D.A., W.L. Manger, and L.K. Meeks (2000) Middle Carboniferous ammonoid population dynamics, southern midcontinent, USA.  GSA Abs. with Prgms., v. 32, no. 7, p. 371.  
  • Stephen, D.A.(2000)  Heterochrony in Pennsylvanian (Morrowan) ammonoids from northern Arkansas. GSA Abs. Prgms., v. 32, no. 3, p. 42.  
  • Stephen, D.A., and R.J. Stanton, Jr. (1999)  Impact of reproductive strategy on cephalopod evolution. 5th International Cephalopod Symposium, Vienna: Cephalopods — Present and Past, Abs. with Prgms., p. 106.  
  • Stephen, D.A. (1999)  Ammonitella size as a conservative trait: evidence from two Carboniferous ammonoid lineages.  GSA Abs. with Prgms., v. 31, no. 7, p. 172. 
  • Grossman, E.L., H. Wang, T.E. Yancey, and D.A. Stephen(1998)  Modest seasonality during the assembly of Pangea: evidence from isotopic analyses of brachiopod shells.  GSA Abs. with Prgms., v. 30, no. 7., p. 272.  
  • Stephen, D.A.(1998)  Intra- and inter-specific embryonic size variation in two Carboniferous ammonoid species.  GSA Abs. with Prgms., v. 30, no. 7., p. 93. 
  • Stephen, D.A., and W.L. Manger (1997)  Dimorphism and maturity in Middle Carboniferous ammonoids, southern midcontinent, United States.  GSA Abs. with Prgms., v. 29, no. 6, p. 343.  
  • Stephen, D.A., W.L. Manger, and L.K. Meeks (1996) Possible reproductive mass mortality and pathologic gigantism in Middle Carboniferous (Chesterian-Morrowan) cephalopod assemblages, southern midcontinent.  GSA Abs. with Prgms., v. 28, no. 7, p. 430.  
  • Stephen, D.A., L.K. Meeks, and W.L. Manger (1996) Possible cephalopod mass mortality, Fayetteville Shale (Chesterian), northwestern Arkansas.  GSA Abs. with Prgms., v. 28, no. 1, p. 64.  
  • Chandler, S.L., A.K. Braden, D.A. Stephen, B.K. Kelly, E.C. Bartholmey, and J.J. Hoaster (1996)  Possible carbonate olistoliths, St. Joe Limestone (Lower Mississippian), northwestern Arkansas.  GSA Abs. with Prgms., v. 28, no. 7, p. 336. 

 

SELECTED PROFESSIONAL  &  COMMUNITY SERVICE: 

  • Served as Chair of the UVU Earth Science Department RTP Committee, currently overseeing 5 tenure-track colleagues. (2012-present) 
  • Delivered presentations to UVU Biology Department students for "Research Day" events.  (2011-present)
  • Served as President of the Southwest Section of the National Association of Geoscience Teachers, and helped develop NAGT field trips for Utah and adjacent states.  (2009-present)
  • Established the Gilbert Club, an informal reading group for Earth Science students and interested community members; meets every week to discuss important new or historically relevant geoscience publications. (2009-present) 
  • Served as Coordinator/Director for the UVU Environmental Studies Program.  (2008-2018) 
  • Mentored undergraduate student research, including the UVU Scholarly & Creative Opportunities Program.  (2008-present) 
  • Served on the Faculty Committee, UVU Interdisciplinary Studies Program.  (2008-present) 
  • Orchestrated the accession and formal cataloging of several large, excellent collections of seashells and fossils donated by local community members and by other institutions.  (2008-present)
  • Served on numerous Search Committees for hiring of new faculty, staff, and Dean of UVU College of Science & Health.  (2007-present) 
  • Volunteered as a science fair judge for the Central Utah Science and Engineering Fair.  (2006-present)
  • Performed formal observations of classroom teaching of colleagues in UVU Earth Science Department.  (2006-present) 
  • Supervised senior theses in the UVU Integrated Studies Program.  (2006-present)
  • Represented the UVU Department of Earth Science at the "Expanding Your Horizons" conference for grade-school girls from around the state.  (2005-present)
  • Represented the UVU Department of Earth Science at the "Empowering Your Tomorrow" conference for grade-school boys from around the state.  (2005-present)
  • Served on the UVU University College [previously the School of General Academics] Auxiliary Curriculum Committee.  (2005-present) 
  • Represented the UVU Department of Earth Science at "majors fairs" for current students.  (2005-present)
  • Mentored undergraduate UVU students in career development.  (2004-present) 
  • Shared expertise with UVU colleagues in the Department, College, and Institution.  (2003-present) 
  • Served the professional scientific community by reviewing grant proposals and papers for publication in scientific journals.  (2001-present) 
  • Gave presentations dealing with the most important basic concepts in geology and paleontology to children at local public elementary schools.  (1994-present)
  • Served on the UVU College of Science & Health Faculty Excellence Award Committee.  (2007-2010)
  • Served on the UVU Capitol Reef Field Station [previously Sleeping Rainbow Ranch] Advisory Committee. (2006-2012) 
  • Represented the UVU College of Science & Health at orientation meeting for the Utah County Academy of Sciences,a public-charter school in Orem, UT.  (2006-2007) 
  • Visited the Walden School, a public-charter school in Provo, UT, to talk about the fields of paleontology and geology, discuss science careers in general, and promote learning opportunities at UVU.  (2005-2012) 
  • Represented the UVU Department of Earth Science at the "UV-You" outreach program, which brings in area high school students.  (2005-2008)
  • Represented the UVU Department of Earth Science at the "UV-Experience" orientation program for incoming freshmen.  (2005-2008)
  • Served on the Scientific Committee, 6th International Cephalopod Symposium.  (2005) 
  • Served on the UVU Strategic Directions Advisory Committee.  (2004-2007) 
  • Took local public elementary school children on geology field trips.  (1995-2001) 

 

SELECTED  ACADEMIC PRESENTATIONS: 

  • Earth Science Seminar Series, Utah Valley University  (2016)
  • Utah Friends of Paleontology, Salt Lake City  (2015) 
  • 9th International Cephalopod Symposium, Zurich, Switzerland (2014)
  • Earth Science Seminar Series, Utah Valley University  (2014)
  • Geological Society of America Annual Meeting, Denver, CO  (2013)
  • Earth Science Seminar Series, Utah Valley University  (2013, Fall)
  • Earth Science Seminar Series, Utah Valley University  (2013, Spring)
  • Earth Science Seminar Series, Utah Valley University  (2012)
  • 8th International Cephalopod Symposium, Dijon, France (2010)
  • Earth Science Seminar Series, Utah Valley University  (2010)
  • 9th North American Paleontological Conference, Cincinnati, OH  (2009)
  • Earth Science Seminar Series, Utah Valley University  (2009)
  • Geological Society of AmericaRocky Mountain Regional Meeting, Orem, UT  (2009)
  • Earth Science Seminar Series, Utah Valley State College  (2008)
  • 7th International Cephalopod Symposium, Sapporo, Japan (2007)
  • Annual meeting of the Utah Academy of Arts and Sciences, Orem, UT  (2006) 
  • Guy F. Atkinson Distinguished Lecture Series, University of Utah  (2005) 
  • 6th International Cephalopod Symposium, Fayetteville, AR (2004)
  • Biology & Geology Seminar Series, Utah Valley State College (2003)
  • 7th North American Paleontological Conference, Berkeley, CA (2001)
  • Geological Society of America Annual Meeting, Reno, NV  (2000)
  • Ecology Seminar Series, Texas A&M University  (2000)
  • Geological Society of America South-Central Regional Meeting, Fayetteville, AR  (2000)
  • Texas A&M University Student Research Week  (2000)
  • Geological Society of America Annual Meeting, Denver, CO (1999)
  • 5th International Cephalopod Symposium, Vienna, Austria (1999)
  • Geological Society of America Annual Meeting, Toronto, Canada (1998)
  • Geological Society of America Annual Meeting, Salt Lake City, UT (1997)
  • Geological Society of America South-Central Regional Meeting, Austin, TX  (1996)
  • Geological Society of America Annual Meeting, Denver, CO (1996) 

 

SELECTED  FIELD  EXPERIENCES:

  • Extensive paleontology and stratigraphy field work (1995-present) -- Utah, Texas, and Arkansas. 
  • Numerous formal and informal geology and paleontology field trips (1990-present) -- in nearly every state in the USA. 
  • Informal geology field excursion (2017) -- Scotland. 
  • Informal natural history field excursion (2017) -- Croatia and Bosnia & Herzegovina. 
  • Informal natural history field excursion (2016) -- Ireland.
  • Informal geology field excursion (2016) -- Norway. 
  • Informal natural history field excursion (2015) -- Australia.
  • Paleontology and stratigraphy field trip (2014) -- Jura Mountains, Switzerland. 
  • Natural history field class (2011, 2013, 2014) -- Costa Rica. 
  • Biology field work (2014) -- Costa Rica. 
  • Geoscience education field trip (2014) -- Arizona. 
  • Biology field work (2013) -- Costa Rica and Panama. 
  • Geoscience education field trips (2010, 2013) -- Utah. 
  • Informal natural history field excursion (2012) -- Borneo and adjacent islands, Malaysia and Indonesia. 
  • Geoscience education field trip (2012) -- New Mexico. 
  • Informal natural history field excursion (2012) -- Baja, Mexico. 
  • Geoscience education field trip (2011) -- Colorado. 
  • Natural history field class (2011) -- Capitol Reef National Park. 
  • Paleontology and stratigraphy field trip (2010) -- Burgundy, France. 
  • Informal geology field excursion (2010) -- Spain and Portugal. 
  • Informal geology field excursion (2009) -- Guatemala. 
  • Informal geology field excursion (2008) -- New Zealand. 
  • Paleontology field work (2007) -- England. 
  • Paleontology and stratigraphy field trip (2007) -- Hokkaido, Japan. 
  • Informal geology field excursion (2007) -- Sonora, Mexico. 
  • Informal geology field excursion (2006) -- Scotland and Ireland. 
  • Informal geology field excursion (2005) -- Alaska. 
  • Biology field work (2003-2004) -- Turks & Caicos Islands, British West Indies. 
  • Biology field work (2001-2002) -- Saint Lucia, West Indies. 
  • Informal geology field excursion (2001) -- southern Germany. 
  • Desert ecology and zoology/botany field trip (2000) -- Big Bend National Park. 
  • Informal geology field excursion (1999) -- Finland and Sweden. 
  • Paleontology and stratigraphy field trip (1999) -- Carnic Alps: Austria and Italy. 
  • Informal geology field excursion (1998) -- Yucatan, Mexico. 
  • Biology, ecology, and geology of modern and ancient carbonate communities (1996) -- San Salvador Island, Bahamas. 
  • Geology field camp (1994) -- Montana, Idaho, Wyoming, Colorado. 
  • Archeology field work (1991-1992) -- South Dakota, and Arkansas. 
  • Extensive agronomy field work (1989-1995) -- Arkansas.