Kenneth D. Angielczyk

Assistant Curator
Research Summary
Research: Paleobiology of non-mammalian synapsids (particularly anomodont therapsids), the End-Permian mass extinction, evolutionary morphology of the turtle shell, trophic network-based approaches to understanding extinction and community evolution, geometric morphometrics, the reciprocal relationship between phylogenetics and biostratigraphy, phylogenetic taxonomy
Biosciences Graduate Program Association
  1. Smith SM, Angielczyk KD. Deciphering an extreme morphology: bone microarchitecture of the hero shrew backbone (Soricidae: Scutisorex). Proc Biol Sci. 2020 May 13; 287(1926):20200457. View in: PubMed

  2. Cisneros JC, Angielczyk K, Kammerer CF, Smith RMH, Fröbisch J, Marsicano CA, Richter M. Captorhinid reptiles from the lower Permian Pedra de Fogo Formation, Piauí, Brazil: the earliest herbivorous tetrapods in Gondwana. PeerJ. 2020; 8:e8719. View in: PubMed

  3. Jones KE, Gonzalez S, Angielczyk KD, Pierce SE. Author Correction: Regionalization of the axial skeleton predates functional adaptation in the forerunners of mammals. Nat Ecol Evol. 2020 03; 4(3):487. View in: PubMed

  4. Jones KE, Gonzalez S, Angielczyk KD, Pierce SE. Regionalization of the axial skeleton predates functional adaptation in the forerunners of mammals. Nat Ecol Evol. 2020 03; 4(3):470-478. View in: PubMed

  5. Jones KE, Angielczyk KD, Pierce SE. Stepwise shifts underlie evolutionary trends in morphological complexity of the mammalian vertebral column. Nat Commun. 2019 11 07; 10(1):5071. View in: PubMed

  6. Lungmus JK, Angielczyk KD. Antiquity of forelimb ecomorphological diversity in the mammalian stem lineage (Synapsida). Proc Natl Acad Sci U S A. 2019 04 02; 116(14):6903-6907. View in: PubMed

  7. Jones KE, Benitez L, Angielczyk KD, Pierce SE. Adaptation and constraint in the evolution of the mammalian backbone. BMC Evol Biol. 2018 11 16; 18(1):172. View in: PubMed

  8. Smith SM, Angielczyk KD, Schmitz L, Wang SC. Do Bony Orbit Dimensions Predict Diel Activity Pattern in Sciurid Rodents? Anat Rec (Hoboken). 2018 10; 301(10):1774-1787. View in: PubMed

  9. Jones KE, Angielczyk KD, Polly PD, Head JJ, Fernandez V, Lungmus JK, Tulga S, Pierce SE. Fossils reveal the complex evolutionary history of the mammalian regionalized spine. Science. 2018 09 21; 361(6408):1249-1252. View in: PubMed

  10. Benoit J, Angielczyk KD, Miyamae JA, Manger P, Fernandez V, Rubidge B. Evolution of facial innervation in anomodont therapsids (Synapsida): Insights from X-ray computerized microtomography. J Morphol. 2018 05; 279(5):673-701. View in: PubMed

  11. Nesbitt SJ, Butler RJ, Ezcurra MD, Barrett PM, Stocker MR, Angielczyk KD, Smith RMH, Sidor CA, Niedzwiedzki G, Sennikov AG, Charig AJ. The earliest bird-line archosaurs and the assembly of the dinosaur body plan. Nature. 2017 04 27; 544(7651):484-487. View in: PubMed

  12. Codron J, Botha-Brink J, Codron D, Huttenlocker AK, Angielczyk KD. Predator-prey interactions amongst Permo-Triassic terrestrial vertebrates as a deterministic factor influencing faunal collapse and turnover. J Evol Biol. 2017 01; 30(1):40-54. View in: PubMed

  13. Bernardi M, Angielczyk KD, Mitchell JS, Ruta M. Phylogenetic Stability, Tree Shape, and Character Compatibility: A Case Study Using Early Tetrapods. Syst Biol. 2016 Sep; 65(5):737-58. View in: PubMed

  14. Botha-Brink J, Codron D, Huttenlocker AK, Angielczyk KD, Ruta M. Breeding Young as a Survival Strategy during Earth's Greatest Mass Extinction. Sci Rep. 2016 Apr 05; 6:24053. View in: PubMed

  15. Cisneros JC, Marsicano C, Angielczyk KD, Smith RM, Richter M, Fröbisch J, Kammerer CF, Sadleir RW. New Permian fauna from tropical Gondwana. Nat Commun. 2015 Nov 05; 6:8676. View in: PubMed

  16. Roopnarine PD, Angielczyk KD. Community stability and selective extinction during the Permian-Triassic mass extinction. Science. 2015 Oct 02; 350(6256):90-3. View in: PubMed

  17. Angielczyk KD, Burroughs RW, Feldman CR. Do turtles follow the rules? Latitudinal gradients in species richness, body size, and geographic range area of the world's turtles. J Exp Zool B Mol Dev Evol. 2015 May; 324(3):270-94. View in: PubMed

  18. Angielczyk KD, Schmitz L. Nocturnality in synapsids predates the origin of mammals by over 100 million years. Proc Biol Sci. 2014 10 22; 281(1793). View in: PubMed

  19. Castanhinha R, Araújo R, Júnior LC, Angielczyk KD, Martins GG, Martins RM, Chaouiya C, Beckmann F, Wilde F. Bringing dicynodonts back to life: paleobiology and anatomy of a new emydopoid genus from the Upper Permian of Mozambique. PLoS One. 2013; 8(12):e80974. View in: PubMed

  20. Ruta M, Angielczyk KD, Fröbisch J, Benton MJ. Decoupling of morphological disparity and taxic diversity during the adaptive radiation of anomodont therapsids. Proc Biol Sci. 2013 Oct 07; 280(1768):20131071. View in: PubMed

  21. Kammerer CF, Fröbisch J, Angielczyk KD. On the validity and phylogenetic position of Eubrachiosaurus browni, a kannemeyeriiform dicynodont (Anomodontia) from Triassic North America. PLoS One. 2013; 8(5):e64203. View in: PubMed

  22. Sidor CA, Vilhena DA, Angielczyk KD, Huttenlocker AK, Nesbitt SJ, Peecook BR, Steyer JS, Smith RM, Tsuji LA. Provincialization of terrestrial faunas following the end-Permian mass extinction. Proc Natl Acad Sci U S A. 2013 May 14; 110(20):8129-33. View in: PubMed

  23. Mitchell JS, Roopnarine PD, Angielczyk KD. Late Cretaceous restructuring of terrestrial communities facilitated the end-Cretaceous mass extinction in North America. Proc Natl Acad Sci U S A. 2012 Nov 13; 109(46):18857-61. View in: PubMed

  24. Parham JF, Donoghue PC, Bell CJ, Calway TD, Head JJ, Holroyd PA, Inoue JG, Irmis RB, Joyce WG, Ksepka DT, Patané JS, Smith ND, Tarver JE, van Tuinen M, Yang Z, Angielczyk KD, Greenwood JM, Hipsley CA, Jacobs L, Makovicky PJ, Müller J, Smith KT, Theodor JM, Warnock RC, Benton MJ. Best practices for justifying fossil calibrations. Syst Biol. 2012 Mar; 61(2):346-59. View in: PubMed

  25. Roopnarine PD, Angielczyk KD. The evolutionary palaeoecology of species and the tragedy of the commons. Biol Lett. 2012 Feb 23; 8(1):147-50. View in: PubMed

  26. Angielczyk KD, Feldman CR, Miller GR. Adaptive evolution of plastron shape in emydine turtles. Evolution. 2011 Feb; 65(2):377-94. View in: PubMed

  27. Nesbitt SJ, Sidor CA, Irmis RB, Angielczyk KD, Smith RM, Tsuji LA. Ecologically distinct dinosaurian sister group shows early diversification of Ornithodira. Nature. 2010 Mar 04; 464(7285):95-8. View in: PubMed

  28. Fröbisch J, Angielczyk KD, Sidor CA. The Triassic dicynodont Kombuisia (Synapsida, Anomodontia) from Antarctica, a refuge from the terrestrial Permian-Triassic mass extinction. Naturwissenschaften. 2010 Feb; 97(2):187-96. View in: PubMed

  29. Pierce SE, Angielczyk KD, Rayfield EJ. Shape and mechanics in thalattosuchian (Crocodylomorpha) skulls: implications for feeding behaviour and niche partitioning. J Anat. 2009 Nov; 215(5):555-76. View in: PubMed

  30. Pierce SE, Angielczyk KD, Rayfield EJ. Patterns of morphospace occupation and mechanical performance in extant crocodilian skulls: a combined geometric morphometric and finite element modeling approach. J Morphol. 2008 Jul; 269(7):840-64. View in: PubMed

  31. Roopnarine PD, Angielczyk KD, Wang SC, Hertog R. Trophic network models explain instability of Early Triassic terrestrial communities. Proc Biol Sci. 2007 Sep 07; 274(1622):2077-86. View in: PubMed

  32. Roopnarine PD, Angielczyk KD, Hertog R. Comment on "Statistical independence of escalatory ecological trends in Phanerozoic marine invertebrates". Science. 2006 Nov 10; 314(5801):925; author reply 925. View in: PubMed

  33. Angielczyk KD. A character-based method for measuring the fit of a cladogram to the fossil record. Syst Biol. 2002 Feb; 51(1):176-91. View in: PubMed