Publications

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Articles in reviewed journals

2023-24:

Paleobiogeographic insights gained from ecological niche models: progress and continued challenges. Paleobiology, in review. JL Blois, AM Bellvé, MA Jarzyna, E Saupe, VJP Syverson.

Reevaluating climate change responses in Rancho La Brea birds and mammals: new dates and new data. Paleobiology, in review. VJP Syverson, DR Prothero.

Age-mortality profiles in mammals from La Brea Tar Pits: insights into population dynamics and taphonomy. PALAIOS, in revision. C Cleaveland, DR Prothero, VJP Syverson.

2020-22:

Allometric trends in growth and dwarfing in the dwarf pronghorn Capromeryx: does dwarfing follow the same trends as growth? New Mexico Museum of Natural History Bulletin 82:335-339 (2021). DR Prothero, VJP Syverson, R Hulbert Jr., EE De Anda, D Balassa. Online

Ontogenetic growth in the Pleistocene pronghorn Stockoceras from San Josecito Cave, Mexico. New Mexico Museum of Natural History Bulletin 90 (Fossil Record 8) (2022). S Olson, RS White, D Prothero, D Balassa, K Marriott, VJP Syverson. Online

How do small birds evolve in response to climate change? Data from the long-term record at La Brea tar pits. Integrative Zoology 15: 249–261 (2020). KD Long, DR Prothero, VJP Syverson. Online

Stasis in red-tailed hawks (Buteo jamaicensis) from La Brea Tar Pits during the last glacial-interglacial cycle. New Mexico Museum of Natural History Bulletin 90 (Fossil Record 8) (2022). D. Balassa, DR Prothero, VJP Syverson, 2022. Online

How did La Brea Swainson’s hawks (Buteo swainsoni) respond to climate change? New Mexico Museum of Natural History Bulletin 90 (Fossil Record 8) (2022). C Cleaveland, DR Prothero, VJP Syverson. Online

Stasis in Neophrontops americanus (Egyptian vultures) from La Brea Tar Pits during the last glacial-interglacial cycle. New Mexico Museum of Natural History Bulletin 90 (Fossil Record 8) (2022). S Olson, DR Prothero, D Balassa, VJP Syverson. Online

2018-2019:

Stasis in the smaller owls from Rancho La Brea during the last glacial-interglacial climate change. Paleontologica Electronica 22.3.70 (2019). M Madan, DR Prothero, VJP Syverson. Online

Spinosity and regeneration in Middle Paleozoic crinoids confirm predator taxonomic preferences. Paleobiology 44(2), 290-305 (2018). VJP Syverson, C Brett, F Gahn, TK Baumiller. Online

From colts to horses: a study of the allometric growth in limb bones in Equus occidentalis from La Brea tar pits. New Mexico Museum of Natural History Bulletin 79: 13-16 (2018). Annoor, T., DR Prothero, VJP Syverson. Online

Allometric shape changes during ontogeny of the Rancho La Brea ground sloth Paramylodon harlani. New Mexico Museum of Natural History Bulletin 79: 481-483 (2018). Long, K., DR Prothero, M. Madan, VJP Syverson. Online

How did bison calves grow up? Postnatal limb allometry in Bison antiquus from La Brea tar pits. New Mexico Museum of Natural History Bulletin 79: 213-217 (2018). S Galvez, DR Prothero, VJP Syverson. 2018. Online

Postnatal allometric limb growth in juvenile camels from the Pleistocene of Rancho La Brea tar pits. New Mexico Museum of Natural History Bulletin 79:267-270 (2018). T Htun, DR Prothero, VJP Syverson. Online

Allometric trends in growth and dwarfing in the extinct Pleistocene Channel Islands pygmy mammoth Mammuthus exilis. New Mexico Museum of Natural History Bulletin 79:261-265 (2018). T Htun, DR Prothero, JM Hoffman, S Lukowski, VJP Syverson. Online

2015-2017:

Did saber-tooth kittens grow up musclebound? A study of postnatal limb bone allometry in felids from the Pleistocene of Rancho La Brea. PLoS One (27 Sep 2017). K Long, DR Prothero, VJP Syverson. Online

Geographic clines, chronoclines, and the fossil record: implications for speciation theory. In Species and Speciation in the Fossil Record, pp. 389-404 (2016). DR Prothero, VJ Syverson, KR Raymond, M Madan, S Molina, A Fragomeni, S DeSantis, A Sutyagina, GL Gage. Online

Stasis in teratorns from the La Brea Tar Pits during the last glacial-interglacial cycle. New Mexico Museum of Natural History Bulletin 74 (Fossil Record 5) (2016). P Gillespy, DR Prothero, VJP Syverson. Online

Stasis in Rancho La Brea black vultures (Coragyps occidentalis) over the last glacial-interglacial cycle", 2016. >New Mexico Museum of Natural History Bulletin 64 (Fossil Record 5) (2016). KL Long, DR Prothero, VJP Syverson. Online

Stasis in Barn Owls from the La Brea Tar Pits during the last glacial-interglacial cycle. New Mexico Museum of Natural History Bulletin 74 (Fossil Record 5) (2015). M Madan, DR Prothero, VJP Syverson. Online

Stasis in Great Horned Owls from the La Brea Tar Pits during the last glacial-interglacial cycle. New Mexico Museum of Natural History Bulletin 67 (Fossil Record 4) (2015). M Madan, DR Prothero, VJP Syverson. Online

2009-2014:

Predation, resistance, and escalation in sessile crinoids (Ph.D. thesis). University of Michigan (2014). VJ Syverson. Online

First insights into growth and population dynamics in the extant cyrtocrinid Holopus mikihe (Crinoidea) near Roatán, Honduras. Bulletin of Marine Science 91 (1) (2014). VJ Syverson, CG Messing, TK Baumiller. Online

Temporal trends of predation resistance in Paleozoic crinoid arm branching morphologies. Paleobiology 40 (3):417-427 (2014). VJ Syverson, TK Baumiller. Online

Size and shape stasis in late Pleistocene mammals and birds from Rancho La Brea during the Last Glacial-Interglacial cycle. Quaternary Science Reviews 56: 1-10 (2012). DR Prothero, VJ Syverson, KR Raymond, MA Madan, A Fragomeni, S Molina, A Sutyagina, SN DeSantis, GL Gage. Online

Evolutionary patterns in late Quaternary California condors. VJ Syverson, D Prothero. PalArch Journal of Vertebrate Paleontology 7(10):1-18 (2010). Online

Other: presentations, books, etc.

2019:

Laboratory Manual for BIOL-3, Introduction to Life Science, Clovis Community College. (book) 2019.VJP Syverson, editor; S Coffman, G Hurtado, R Alcazar.

How did cougars and bobcats respond to the changes at the end of the Pleistocene?. (poster) 2019 GSA Annual Meeting in Phoenix, Arizona, USA. D Balassa, D Prothero, VJP Syverson

2017:

The quantitative footprint of natural history collections and specimens in the scientific literature. (presentation) 2017 GSA Annual Meeting in Seattle, Washington, USA. VJP Syverson, SE Peters.

Extending the reach and resolution of the Paleobiology Database with computational and data infrastructures. (presentation) 2017 GSA Annual Meeting in Seattle, Washington, USA. S Peters, VJP Syverson, A Zaffos, J Husson, I Ross, J Czaplewski.

How did La Brea colts grow up? A study of postnatal allometric growth in the limb bones of Equus occidentalis. (poster) 2017 GSA Annual Meeting in Seattle, Washington, USA. T Annoor, D Prothero, VJP Syverson.

How did small owls from the La Brea Tar Pits respond to the Late Pleistocene climate change? (poster) 2017 GSA Annual Meeting in Seattle, Washington, USA. MA Madan, D Prothero, VJP Syverson.

2012:

Evolutionary response in Paleozoic crinoid arm branching patterns to grazing predators. (presentation) Geological Society of America Abstracts with Programs. Vol. 44, No. 7, p.137.

2011:

Morphological variability and developmental constraints in crinoid arms. (poster) 2011 GSA Annual Meeting in Minneapolis, Minnesota, USA. VJ Syverson.

Bergmann’s Rule, climate change, stasis in Late Pleistocene mammals and birds from Rancho La Brea. (presentation) 2011 GSA Annual Meeting in Minneapolis, Minnesota, USA. DR Prothero, KR Raymond, MA Madan, A Fragomeni, SN DeSantis, VJ Syverson, S Molina, E Linden.

2007:

Evolutionary patterns in Pleistocene to Recent California condors. (poster) 2007 GSA Annual Meeting in Denver, Colorado, USA. VJ Syverson, D Prothero.