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. Kulik ZT, Lungmus JK, Angielczyk KD, Sidor CA. Living fast in the Triassic: New data on life history in Lystrosaurus (Therapsida: Dicynodontia) from northeastern Pangea. PLoS One. 2021; 16(11):e0259369. View in: PubMed

  2. Whitney MR, Angielczyk KD, Peecook BR, Sidor CA. The evolution of the synapsid tusk: insights from dicynodont therapsid tusk histology. Proc Biol Sci. 2021 Oct 27; 288(1961):20211670. View in: PubMed

  3. Zack EH, Smith SM, Angielczyk KD. Effect of captivity on the vertebral bone microstructure of xenarthran mammals. Anat Rec (Hoboken). 2021 Oct 22. View in: PubMed

  4. Melstrom KM, Angielczyk KD, Ritterbush KA, Irmis RB. The limits of convergence: the roles of phylogeny and dietary ecology in shaping non-avian amniote crania. R Soc Open Sci. 2021 Sep; 8(9):202145. View in: PubMed

  5. Olroyd SL, LeBlanc ARH, Araújo R, Angielczyk KD, Duhamel A, Benoit J, Amaral M. Histology and µCT reveal the unique evolution and development of multiple tooth rows in the synapsid Endothiodon. Sci Rep. 2021 08 19; 11(1):16875. View in: PubMed

  6. Rhoda D, Segall M, Larouche O, Evans K, Angielczyk KD. Local Superimpositions Facilitate Morphometric Analysis of Complex Articulating Structures. Integr Comp Biol. 2021 11 17; 61(5):1892-1904. View in: PubMed

  7. Lungmus JK, Angielczyk KD. Phylogeny, function and ecology in the deep evolutionary history of the mammalian forelimb. Proc Biol Sci. 2021 04 28; 288(1949):20210494. View in: PubMed

  8. Viglietti PA, Benson RBJ, Smith RMH, Botha J, Kammerer CF, Skosan Z, Butler E, Crean A, Eloff B, Kaal S, Mohoi J, Molehe W, Mtalana N, Mtungata S, Ntheri N, Ntsala T, Nyaphuli J, October P, Skinner G, Strong M, Stummer H, Wolvaardt FP, Angielczyk KD. Evidence from South Africa for a protracted end-Permian extinction on land. Proc Natl Acad Sci U S A. 2021 04 27; 118(17). View in: PubMed

  9. Jones KE, Dickson BV, Angielczyk KD, Pierce SE. Adaptive landscapes challenge the "lateral-to-sagittal" paradigm for mammalian vertebral evolution. Curr Biol. 2021 05 10; 31(9):1883-1892.e7. View in: PubMed

  10. Kammerer CF, Deutsch M, Lungmus JK, Angielczyk KD. Effects of taphonomic deformation on geometric morphometric analysis of fossils: a study using the dicynodont Diictodon feliceps (Therapsida, Anomodontia). PeerJ. 2020; 8:e9925. View in: PubMed

  11. Smith SM, Angielczyk KD. Deciphering an extreme morphology: bone microarchitecture of the hero shrew backbone (Soricidae: Scutisorex). Proc Biol Sci. 2020 05 13; 287(1926):20200457. View in: PubMed

  12. 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

  13. 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

  14. 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

  15. 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

  16. 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

  17. 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

  18. 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

  19. 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

  20. 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

  21. 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

  22. 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

  23. 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

  24. 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

  25. 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

  26. 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

  27. 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

  28. 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

  29. 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

  30. 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

  31. 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

  32. 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

  33. 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

  34. 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

  35. 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

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

  37. 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

  38. 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

  39. 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

  40. 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

  41. 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

  42. 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

  43. 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