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Christian Alfred Sidor is an American vertebrate paleontologist. He is currently a Professor in the Department of Biology, University of Washington in Seattle, as well as Curator of Vertebrate Paleontology and Associate Director for Research and Collections at the Burke Museum of Natural History and Culture. His research focuses on Permian and Triassic tetrapod evolution, especially on therapsids.

Academic and professional background

Sidor received a B.S. (with honors) in biology from Trinity College in 1994. He went on to pursue his graduate studies at the University of Chicago, completing his M.S. in 1996 and his Ph.D. in 2000 under the supervision of James Hopson. Sidor won the Romer Prize in 2001 for his doctoral work, a competitive annual award at the Society of Vertebrate Paleontology annual meeting for the best predoctoral student oral presentation. Following his dissertation, Sidor held a postdoctoral fellowship at the National Museum of Natural History (2001) before becoming an Assistant Professor in Anatomy at the New York College of Osteopathic Medicine. He held that position until 2005, when he took up a position as an Assistant Professor in Biology at the University of Washington. Presently, he is a full Professor in Biology at the University of Washington, as well as a Curator of Vertebrate Paleontology and Associate Director for Research and Collections at the affiliated Burke Museum. He is a research associate at the Field Museum of Natural History, National Museum of Natural History, and Evolutionary Studies Institute (University of the Witwatersrand).

Academic contributions

Sidor is best known for his work on therapsid synapsids; the title of his dissertation was "Evolutionary trends and relationships within the Synapsida." However, Sidor has been involved with research on a diverse array of other Paleozoic and Mesozoic tetrapod clades, including temnospondyl amphibians; captorhinid reptiles; pseudosuchian archosaurs; and avemetatarsalian archosaurs, encompassing a wide-ranging research program focusing on descriptive anatomy, taxonomy and phylogenetics, histology and pathology, trends in biogeography, and responses of tetrapods to major climatic perturbations. Sidor has extensive experience collecting and researching fossils from historically less well-sampled geographic regions, including Niger, Tanzania, Zambia, and Antarctica. Previously he was a member of the editorial board of the Journal of Vertebrate Paleontology (2005-2010).

Below is a list of new taxa that Sidor has contributed to naming:

References

1. "Christian Sidor | UW Biology". www.biology.washington.edu. Retrieved 2020-07-10.
2. "Leadership". Burke Museum. Retrieved 2020-07-10.
3. "Chris Sidor".
4. "SVP - Past Award Winners". Archived from the original on 2019-03-17. Retrieved 2020-07-09.
5. "SVP - Romer Prize". Retrieved 2020-07-09.
6. "Christian A. Sidor". ResearchGate.
7. Rubidge, Bruce S.; Sidor, Christian A. (2001). "Evolutionary Patterns Among Permo-Triassic Therapsids". Annual Review of Ecology and Systematics. 32 (1): 449–480. Bibcode:2001AnRES..32..449R. doi:10.1146/annurev.ecolsys.32.081501.114113. ISSN 0066-4162.
8. Sidor, Christian A.; Hopson, James A. (1998). "Ghost Lineages and "Mammalness": Assessing the Temporal Pattern of Character Acquisition in the Synapsida". Paleobiology. 24 (2): 254–273. doi:10.1666/0094-8373(1998)024[0254:GLAATT]2.3.CO;2. ISSN 0094-8373. JSTOR 2401242. S2CID 83773704.
9. Sidor, Christian A. (2001). "Simplification as a Trend in Synapsid Cranial Evolution". Evolution. 55 (7): 1419–1442. doi:10.1111/j.0014-3820.2001.tb00663.x. ISSN 0014-3820. PMID 11525465. S2CID 20339164.
10. Sidor, Christian A.; Hopson, James A. (2017-11-29). "Cricodon metabolus(Cynodontia: Gomphodontia) from the Triassic Ntawere Formation of northeastern Zambia: patterns of tooth replacement and a systematic review of the Trirachodontidae". Journal of Vertebrate Paleontology. 37 (sup1): 39–64. Bibcode:2017JVPal..37S..39S. doi:10.1080/02724634.2017.1410485. ISSN 0272-4634. S2CID 89932366.
11. Kato, Kyle M.; Rega, Elizabeth A.; Sidor, Christian A.; Huttenlocker, Adam K. (2020-01-13). "Investigation of a bone lesion in a gorgonopsian (Synapsida) from the Permian of Zambia and periosteal reactions in fossil non-mammalian tetrapods". Philosophical Transactions of the Royal Society B: Biological Sciences. 375 (1793): 20190144. doi:10.1098/rstb.2019.0144. ISSN 0962-8436. PMC 7017433. PMID 31928188.
12. Kulik, Zoe T.; Sidor, Christian A. (2019-05-09). "The original boneheads: histologic analysis of the pachyostotic skull roof in Permian burnetiamorphs (Therapsida: Biarmosuchia)". Journal of Anatomy. 235 (1): 151–166. doi:10.1111/joa.12987. ISSN 0021-8782. PMC 6580075. PMID 31070781.
13. Sidor, Christian A. (2000). Evolutionary trends and relationships within the Synapsida [Ph.D. thesis]. Chicago: University of Chicago.
14. ^ Sidor, Christian A.; O'Keefe, F. Robin; Damiani, Ross; Steyer, J. Sébastien; Smith, Roger M. H.; Larsson, Hans C. E.; Sereno, Paul C.; Ide, Oumarou; Maga, Abdoulaye (2005). "Permian tetrapods from the Sahara show climate-controlled endemism in Pangaea" (PDF). Nature. 434 (7035): 886–889. Bibcode:2005Natur.434..886S. doi:10.1038/nature03393. ISSN 0028-0836. PMID 15829962. S2CID 4416647.
15. ^ Sidor, Christian A.; Damiani, Ross; Hammer, William R. (2008-09-12). "A new Triassic temnospondyl from Antarctica and a review of Fremouw Formation biostratigraphy". Journal of Vertebrate Paleontology. 28 (3): 656–663. doi:10.1671/0272-4634(2008)28[656:anttfa]2.0.co;2. ISSN 0272-4634. S2CID 131582010.
16. Sidor, Christian A.; Steyer, J. Sébastien; Damiani, Ross (2007-03-12). "Parotosuchus(Temnospondyli: Mastodonsauridae) from the Triassic of Antarctica". Journal of Vertebrate Paleontology. 27 (1): 232–235. doi:10.1671/0272-4634(2007)27[232:ptmftt]2.0.co;2. ISSN 0272-4634. S2CID 85650753.
17. O'Keefe, F. Robin; Sidor, Christian A.; Larsson, Hans C. E.; Maga, Abdoulaye; Ide, Oumarou (2005-06-27). "The vertebrate fauna of the Upper Permian of Niger—III, morphology and ontogeny of the hindlimb ofMoradisaurus grandis(Reptilia, Captorhinidae)". Journal of Vertebrate Paleontology. 25 (2): 309–319. doi:10.1671/0272-4634(2005)025[0309:tvfotu]2.0.co;2. ISSN 0272-4634. S2CID 13645651.
18. ^ Reisz, R. R.; LeBlanc, Aaron R. H.; Sidor, Christian A.; Scott, Diane; May, William (2015-08-20). "A new captorhinid reptile from the Lower Permian of Oklahoma showing remarkable dental and mandibular convergence with microsaurian tetrapods". The Science of Nature. 102 (9–10): 50. Bibcode:2015SciNa.102...50R. doi:10.1007/s00114-015-1299-y. ISSN 0028-1042. PMID 26289932. S2CID 17161972.
19. Sereno, P. C. (2001-10-25). "The Giant Crocodyliform Sarcosuchus from the Cretaceous of Africa" (PDF). Science. 294 (5546): 1516–1519. Bibcode:2001Sci...294.1516S. doi:10.1126/science.1066521. ISSN 0036-8075. PMID 11679634. S2CID 22956704.
20. Nesbitt, Sterling J.; Stocker, Michelle R.; Parker, William G.; Wood, Thomas A.; Sidor, Christian A.; Angielczyk, Kenneth D. (2017-11-29). "The braincase and endocast ofParringtonia gracilis, a Middle Triassic suchian (Archosaur: Pseudosuchia)". Journal of Vertebrate Paleontology. 37 (sup1): 122–141. Bibcode:2017JVPal..37S.122N. doi:10.1080/02724634.2017.1393431. ISSN 0272-4634. S2CID 89657063.
21. ^ Sereno, P. C.; Sidor, C. A.; Larsson, H. C. E.; Gado, B. (2003-06-17). "A new notosuchian from the Early Cretaceous of Niger". Journal of Vertebrate Paleontology. 23 (2): 477–482. doi:10.1671/0272-4634(2003)023[0477:ANNFTE]2.0.CO;2. ISSN 0272-4634. S2CID 86329307.
22. ^ Nesbitt, Sterling J.; Sidor, Christian A.; Irmis, Randall B.; Angielczyk, Kenneth D.; Smith, Roger M. H.; Tsuji, Linda A. (2010). "Ecologically distinct dinosaurian sister group shows early diversification of Ornithodira". Nature. 464 (7285): 95–98. Bibcode:2010Natur.464...95N. doi:10.1038/nature08718. ISSN 0028-0836. PMID 20203608. S2CID 4344048.
23. ^ Nesbitt, S. J.; Barrett, P. M.; Werning, S.; Sidor, C. A.; Charig, A. J. (2012-12-05). "The oldest dinosaur? A Middle Triassic dinosauriform from Tanzania". Biology Letters. 9 (1): 20120949. doi:10.1098/rsbl.2012.0949. ISSN 1744-9561. PMC 3565515. PMID 23221875.
24. Peecook, R; Sidor, A; Nesbitt, J; Smith, M; Steyer, S; Anigelczyck, D (2014). "A New Silesaurid from the Upper Ntawere Formation of Zambia (Middle Triassic) Demonstrates the Rapid Diversification of Silesauridae (Avemetatarsalia, Dinosauriformes) (project)". doi:10.7934/p1046. {{cite journal}}: Cite journal requires |journal= (help)
25. ^ Nesbitt, Sterling J.; Sidor, Christian A.; Angielczyk, Kenneth D.; Smith, Roger M. H.; Tsuji, Linda A. (2014-09-19). "A new archosaur from the Manda beds (Anisian, Middle Triassic) of southern Tanzania and its implications for character state optimizations at Archosauria and Pseudosuchia". Journal of Vertebrate Paleontology. 34 (6): 1357–1382. Bibcode:2014JVPal..34.1357N. doi:10.1080/02724634.2014.859622. ISSN 0272-4634. S2CID 129558756.
26. Peecook, Brandon R.; Sidor, Christian A. (2015-05-20). "The First Dinosaur from Washington State and a Review of Pacific Coast Dinosaurs from North America". PLOS ONE. 10 (5): e0127792. Bibcode:2015PLoSO..1027792P. doi:10.1371/journal.pone.0127792. ISSN 1932-6203. PMC 4439161. PMID 25993090.
27. ^ Nesbitt, Sterling J.; Butler, Richard J.; Ezcurra, Martín D.; Barrett, Paul M.; Stocker, Michelle R.; Angielczyk, Kenneth D.; Smith, Roger M. H.; Sidor, Christian A.; Niedźwiedzki, Grzegorz; Sennikov, Andrey G.; Charig, Alan J. (2017). "The earliest bird-line archosaurs and the assembly of the dinosaur body plan" (PDF). Nature. 544 (7651): 484–487. Bibcode:2017Natur.544..484N. doi:10.1038/nature22037. ISSN 0028-0836. PMID 28405026. S2CID 9095072.
28. "Reptile Relative Was Among the First Animals to Walk On Upright Legs". Science. 2015-09-21. Archived from the original on July 10, 2020. Retrieved 2020-07-10.
29. "Dinosaurs Ten Million Years Older Than Thought". National Geographic News. 2010-03-04. Archived from the original on July 13, 2020. Retrieved 2020-07-10.
30. "'Scarface,' an ancient cousin to mammals, unearthed in Africa". UW News. Retrieved 2020-07-10.
31. "Going to the end of the Earth to uncover fossil life in Antarctica". Burke Museum. Retrieved 2020-07-10.
32. Gee, Bryan M.; Beightol, Charles V.; Sidor, Christian A. (2023). "A new lapillopsid from Antarctica and a reappraisal of the phylogenetic relationships of early diverging stereospondyls". Journal of Vertebrate Paleontology. 42 (6). doi:10.1080/02724634.2023.2216260. ISSN 0272-4634.
33. Sidor, Christian A.; Kulik, Zoe T.; Huttenlocker, Adam K. (2022). "A new bauriamorph therocephalian adds a novel component to the Lower Triassic tetrapod assemblage of the Fremouw Formation (Transantarctic Basin) of Antarctica". Journal of Vertebrate Paleontology. 41 (6). doi:10.1080/02724634.2021.2081510. ISSN 0272-4634.
34. Kammerer, Christian; Sidor, Christian (2021). "A new burnetiid from the mid-Permian of Zambia and a reanalysis of burnetiamorph relationships (project)". MorphoBank datasets. doi:10.7934/p3785. Retrieved 2024-11-02.
35. Sidor, Christian A.; Tabor, Neil J.; Smith, Roger M. H. (2021-06-24). "A New Late Permian Burnetiamorph From Zambia Confirms Exceptional Levels of Endemism in Burnetiamorpha (Therapsida: Biarmosuchia) and an Updated Paleoenvironmental Interpretation of the Upper Madumabisa Mudstone Formation". Frontiers in Ecology and Evolution. 9. doi:10.3389/fevo.2021.685244. ISSN 2296-701X.
36. Huttenlocker, Adam K.; Sidor, Christian A. (2020-11-06). "A Basal Nonmammaliaform Cynodont from the Permian of Zambia and the Origins of Mammalian Endocranial and Postcranial Anatomy". Journal of Vertebrate Paleontology. 40 (5): e1827413. Bibcode:2020JVPal..40E7413H. doi:10.1080/02724634.2020.1827413. ISSN 0272-4634.
37. Kligman, Ben T.; Marsh, Adam D.; Sues, Hans-Dieter; Sidor, Christian A. (2020). "A new non-mammalian eucynodont from the Chinle Formation (Triassic: Norian), and implications for the early Mesozoic equatorial cynodont record". Biology Letters. 16 (11): 20200631. doi:10.1098/rsbl.2020.0631. ISSN 1744-9561. PMC 7728676. PMID 33142088.
38. Gonçalves, Gabriel S.; Sidor, Christian A. (2019-12-15). "A new drepanosauromorph, Ancistronychus paradoxus n. gen. et sp., from the Chinle Formation of Petrified Forest National Park, Arizona, USA". PaleoBios. 36: 1–10. doi:10.5070/P9361046203.
39. Arbez, Thomas; Sidor, Christian A.; Steyer, J.-Sébastien (2018-09-27). "Laosuchus naga gen. et sp. nov., a new chroniosuchian from South-East Asia (Laos) with internal structures revealed by micro-CT scan and discussion of its palaeobiology" (PDF). Journal of Systematic Palaeontology. 17 (14): 1165–1182. doi:10.1080/14772019.2018.1504827. ISSN 1477-2019. S2CID 91670454.
40. Peecook, Brandon R.; Smith, Roger M. H.; Sidor, Christian A. (2018-11-02). "A novel archosauromorph from Antarctica and an updated review of a high-latitude vertebrate assemblage in the wake of the end-Permian mass extinction". Journal of Vertebrate Paleontology. 38 (6): e1536664. Bibcode:2018JVPal..38E6664P. doi:10.1080/02724634.2018.1536664. ISSN 0272-4634. S2CID 92116260.
41. Whitney, Megan R.; Sidor, Christian A. (2016-04-11). "A new therapsid from the Permian Madumabisa Mudstone Formation (Mid-Zambezi Basin) of southern Zambia". Journal of Vertebrate Paleontology. 36 (4): e1150767. Bibcode:2016JVPal..36E0767W. doi:10.1080/02724634.2016.1150767. ISSN 0272-4634. S2CID 130695355.
42. Huttenlocker, Adam K.; Sidor, Christian A. (2016-03-10). "The first karenitid (Therapsida, Therocephalia) from the upper Permian of Gondwana and the biogeography of Permo-Triassic therocephalians". Journal of Vertebrate Paleontology. 36 (4): e1111897. Bibcode:2016JVPal..36E1897H. doi:10.1080/02724634.2016.1111897. ISSN 0272-4634. S2CID 130994874.
43. Huttenlocker, Adam K.; Sidor, Christian A.; Angielczyk, Kenneth D. (2015-07-20). "A new eutherocephalian (Therapsida, Therocephalia) from the upper Permian Madumabisa Mudstone Formation (Luangwa Basin) of Zambia". Journal of Vertebrate Paleontology. 35 (5): e969400. Bibcode:2015JVPal..35E9400H. doi:10.1080/02724634.2015.969400. ISSN 0272-4634. S2CID 83554630.
44. Angielczyk, Kenneth D.; Huertas, Sébastien; Smith, Roger M. H.; Tabor, Neil J.; Sidor, Christian A.; Steyer, Jean-Sébastien; Tsuji, Linda A.; Gostling, Neil J. (2014-09-19). "New dicynodonts (Therapsida, Anomodontia) and updated tetrapod stratigraphy of the Permian Ruhuhu Formation (Songea Group, Ruhuhu Basin) of southern Tanzania". Journal of Vertebrate Paleontology. 34 (6): 1408–1426. Bibcode:2014JVPal..34.1408A. doi:10.1080/02724634.2014.880448. ISSN 0272-4634. S2CID 130441838.
45. Sidor, Christian A.; Steyer, J. SéBastien; Hammer, William R. (2014-04-16). "A new capitosauroid temnospondyl from the Middle Triassic upper Fremouw Formation of Antarctica". Journal of Vertebrate Paleontology. 34 (3): 539–548. Bibcode:2014JVPal..34..539S. doi:10.1080/02724634.2013.808205. ISSN 0272-4634. S2CID 86010469.
46. Peecook, Brandon R.; Sidor, Christian A.; Nesbitt, Sterling J.; Smith, Roger M. H.; Steyer, J. Sebastien; Angielczyk, Kenneth D. (2013). "A new silesaurid from the upper Ntawere Formation of Zambia (Middle Triassic) demonstrates the rapid diversification of Silesauridae (Avemetatarsalia, Dinosauriformes)". Journal of Vertebrate Paleontology. 33 (5): 1127–1137. Bibcode:2013JVPal..33.1127P. doi:10.1080/02724634.2013.755991. ISSN 0272-4634. S2CID 140653951.
47. Fröbisch, Jörg; Angielczyk, Kenneth D.; Sidor, Christian A. (2009-12-03). "The Triassic dicynodont Kombuisia (Synapsida, Anomodontia) from Antarctica, a refuge from the terrestrial Permian-Triassic mass extinction". Naturwissenschaften. 97 (2): 187–196. doi:10.1007/s00114-009-0626-6. ISSN 0028-1042. PMID 19956920. S2CID 20557454.
48. Sidor, Christian A.; Smith, Roger M. H. (2007-06-12). "A second burnetiamorph therapsid from the Permian Teekloof Formation of South Africa and its associated fauna". Journal of Vertebrate Paleontology. 27 (2): 420–430. doi:10.1671/0272-4634(2007)27[420:asbtft]2.0.co;2. ISSN 0272-4634. S2CID 86173425.
49. Rubidge, Bruce S.; Sidor, Christian A.; Modesto, Sean P. (2006). "A New Burnetiamorph (Therapsida: Biarmosuchia) from the Middle Permian of South Africa". Journal of Paleontology. 80 (4): 740–749. doi:10.1666/0022-3360(2006)80[740:ANBTBF]2.0.CO;2. ISSN 0022-3360. S2CID 130196490.
50. Smith, Roger M. H.; Rubidge, Bruce S.; Sidor, Christian A. (2006-06-12). "A new burnetiid (Therapsida: Biarmosuchia) from the Upper Permian of South Africa and its biogeographic implications". Journal of Vertebrate Paleontology. 26 (2): 331–343. doi:10.1671/0272-4634(2006)26[331:anbtbf]2.0.co;2. ISSN 0272-4634. S2CID 86367955.
51. SIDOR, C. A.; HANCOX, P. J. (2006). "Elliotherium Kersteni, A New Tritheledontid from the Lower Elliot Formation (Upper Triassic) of South Africa". Journal of Paleontology. 80 (2): 333–342. doi:10.1666/0022-3360(2006)080[0333:ekantf]2.0.co;2. ISSN 0022-3360. S2CID 130003909.
52. Sidor, Christian A.; Rubidge, Bruce S. (2006). Herpetoskylax hopsoni, a new biarmosuchian (Therapsida: Biarmosuchia) from the Beaufort Group of South Africa. University of Chicago Press. pp. 76–113. {{cite book}}: |work= ignored (help)
53. Sidor, Christian A.; Hopson, James A.; Keyser, André W. (2004-12-10). "A new burnetiamorph therapsid from the Teekloof Formation, Permian, of South Africa". Journal of Vertebrate Paleontology. 24 (4): 938–950. doi:10.1671/0272-4634(2004)024[0938:anbtft]2.0.co;2. ISSN 0272-4634. S2CID 85752458.
54. Sidor, Christian A.; Smith, Roger M. H. (2004). "A new galesaurid (Therapsida: Cynodontia) from the Lower Triassic of South Africa". Palaeontology. 47 (3): 535–556. Bibcode:2004Palgy..47..535S. doi:10.1111/j.0031-0239.2004.00378.x. ISSN 0031-0239. S2CID 129906726.
55. Sereno, P. C. (1998-11-13). "A Long-Snouted Predatory Dinosaur from Africa and the Evolution of Spinosaurids". Science. 282 (5392): 1298–1302. Bibcode:1998Sci...282.1298S. CiteSeerX 10.1.1.502.3887. doi:10.1126/science.282.5392.1298. PMID 9812890.
56. Sereno, P. C.; Dutheil, D. B.; Iarochene, M.; Larsson, H. C. E.; Lyon, G. H.; Magwene, P. M.; Sidor, C. A.; Varricchio, D. J.; Wilson, J. A. (1996-05-17). "Predatory Dinosaurs from the Sahara and Late Cretaceous Faunal Differentiation" (PDF). Science. 272 (5264): 986–991. Bibcode:1996Sci...272..986S. doi:10.1126/science.272.5264.986. ISSN 0036-8075. PMID 8662584. S2CID 39658297.

External links

• "Toothy 'Crocamander' Was Top Triassic Predator", the Discovery Channel discusses one of the finds of Sidor's team

• American paleontologists
• People associated with the American Museum of Natural History
• People associated with the Field Museum of Natural History
• University of Washington faculty
• Living people