{"id":882950,"date":"2026-10-15T08:14:23","date_gmt":"2026-10-15T08:14:23","guid":{"rendered":"https:\/\/www.newsbeep.com\/us\/882950\/"},"modified":"2026-10-15T08:14:23","modified_gmt":"2026-10-15T08:14:23","slug":"early-tetrapod-neck-mobility-modelled-using-an-extant-analogue","status":"publish","type":"post","link":"https:\/\/www.newsbeep.com\/us\/882950\/","title":{"rendered":"Early tetrapod neck mobility modelled using an extant analogue"},"content":{"rendered":"

Arratia, G., Schultze, H.-P. & Casciotta, J. Vertebral column and associated elements in dipnoans and comparison with other fishes: development and homology. J. Morphol. 250, 101\u2013172 (2001).<\/p>\n

Article<\/a>\u00a0
\n PubMed<\/a>\u00a0
\n CAS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Coates, M. The Devonian tetrapod Acanthostega gunnari Jarvik: postcranial anatomy, basal tetrapod interrelationships and patterns of skeletal evolution. Trans. R. Soc. Edinb. 87, 363\u2013421 (1996).<\/p>\n

Article<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Hitchcock, E. C. A functional interpretation of the anterior-most vertebrae and skull of Eusthenopteron. Bull. Mus. Natl Hist. Nat. 4, 269\u2013285 (1995).<\/p>\n


\n Google Scholar<\/a>\u00a0\n <\/p>\n

Long, J. A. & Gordon, M. S. The greatest step in vertebrate history: a paleobiological review of the fish-tetrapod transition. Physiol. Biochem. Zool. 77, 700\u2013719 (2004).<\/p>\n

Article<\/a>\u00a0
\n PubMed<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Ericsson, R., Knight, R. & Johanson, Z. Evolution and development of the vertebrate neck. J. Anat. 222, 67\u201378 (2013).<\/p>\n

Article<\/a>\u00a0
\n PubMed<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Hirasawa, T. & Kuratani, S. Evolution of the vertebrate skeleton: morphology, embryology, and development. Zool. Lett. 1, 2 (2015).<\/p>\n

Article<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Coates, M. I., Ruta, M. & Friedman, M. Ever since Owen: changing perspectives on the early evolution of tetrapods. Annu. Rev. Ecol. Evol. Syst. 39, 571\u2013592 (2008).<\/p>\n

Article<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Clack, J. A. Gaining Ground: The Origin and Evolution of Tetrapods (Indiana Univ. Press, 2012).<\/p>\n

Shubin, N., Daeschler, E. B. & Jenkins, F. A. Jr. Origin of the tetrapod neck and shoulder. In Great Transformations in Vertebrate Evolution (eds Dial, K. P. et al.) 63\u201376 (Univ. Chicago Press, 2015).<\/p>\n

Korneisel, D. E. & Maddin, H. C. Review of the tetrapod skull\u2013neck boundary: implications for the evolution of the atlas\u2013axis complex. Biol. Rev. 100, 2435\u20132470 (2025).<\/p>\n

Article<\/a>\u00a0
\n PubMed<\/a>\u00a0
\n PubMed Central<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Pierce, S. E., Clack, J. A. & Hutchinson, J. R. Three-dimensional limb joint mobility in the early tetrapod Ichthyostega. Nature 486, 523\u2013526 (2012).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n PubMed<\/a>\u00a0
\n CAS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Coates, M. I. & Ruta, M. Skeletal changes in the transition from fins to limbs. In Fins into Limbs: Evolution, Development, and Transformation (ed. Hall, B. K.) 15\u201338 (Univ. Chicago Press, 2007).<\/p>\n

Standen, E. M., Du, T. Y. & Larsson, H. C. E. Developmental plasticity and the origin of tetrapods. Nature 513, 54\u201358 (2014).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n PubMed<\/a>\u00a0
\n CAS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Clarac, F., Cornille, A., Bijl, S. & Sanchez, S. Tetrapod terrestrialisation: a weight-bearing potential already present in the humerus of the stem-tetrapod fish Eusthenopteron foordi. Preprint at bioRxiv https:\/\/doi.org\/10.1101\/2024.02.09.579723<\/a> (2024).<\/p>\n

Miyashita, T. et al. Novel assembly of a head\u2013trunk interface in the sister group of jawed vertebrates. Nature 645, 686\u2013691 (2025).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n PubMed<\/a>\u00a0
\n CAS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Kuratani, S. Spatial distribution of postotic crest cells defines the head\/trunk interface of the vertebrate body: embryological interpretation of peripheral nerve morphology and evolution of the vertebrate head. Anat. Embryol. 195, 1\u201313 (1996).<\/p>\n

Article<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Kuo, B. R. & Erickson, C. A. Vagal neural crest cell migratory behavior: a transition between the cranial and trunk crest. Dev. Dyn. 240, 2084\u20132100 (2011).<\/p>\n

Article<\/a>\u00a0
\n PubMed<\/a>\u00a0
\n PubMed Central<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Kuratani, S., Kusakabe, R. & Hirasawa, T. The neural crest and evolution of the head\/trunk interface in vertebrates. Dev. Biol. 444, S60\u2013S66 (2018).<\/p>\n

Article<\/a>\u00a0
\n PubMed<\/a>\u00a0
\n CAS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Martik, M. L. et al. Evolution of the new head by gradual acquisition of neural crest regulatory circuits. Nature 574, 675\u2013678 (2019).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n PubMed<\/a>\u00a0
\n PubMed Central<\/a>\u00a0
\n CAS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Lescroart, F. et al. Clonal analysis reveals a common origin between nonsomite-derived neck muscles and heart myocardium. Proc. Natl Acad. Sci. USA 112, 1446\u20131451 (2015).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n PubMed<\/a>\u00a0
\n PubMed Central<\/a>\u00a0
\n CAS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Adachi, N., Bilio, M., Baldini, A. & Kelly, R. G. Cardiopharyngeal mesoderm origins of musculoskeletal and connective tissues in the mammalian pharynx. Development 147, dev185256 (2020).<\/p>\n

Article<\/a>\u00a0
\n PubMed<\/a>\u00a0
\n CAS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Swedlund, B. & Lescroart, F. Cardiopharyngeal progenitor specification: multiple roads to the heart and head muscles. Cold Spring Harb. Perspect. Biol. 12, a036731 (2020).<\/p>\n

Article<\/a>\u00a0
\n PubMed<\/a>\u00a0
\n PubMed Central<\/a>\u00a0
\n CAS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Lours-Calet, C. et al. Evolutionarily conserved morphogenetic movements at the vertebrate head\u2013trunk interface coordinate the transport and assembly of hypopharyngeal structures. Dev. Biol. 390, 231\u2013246 (2014).<\/p>\n

Article<\/a>\u00a0
\n PubMed<\/a>\u00a0
\n PubMed Central<\/a>\u00a0
\n CAS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Oisi, Y., Fujimoto, S., Ota, K. G. & Kuratani, S. On the peculiar morphology and development of the hypoglossal, glossopharyngeal and vagus nerves and hypobranchial muscles in the hagfish. Zool. Lett. 1, 6 (2015).<\/p>\n

Article<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Tada, M. N. & Kuratani, S. Evolutionary and developmental understanding of the spinal accessory nerve. Zool. Lett. 1, 4 (2015).<\/p>\n

Article<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Matsuoka, T. et al. Neural crest origins of the neck and shoulder. Nature 436, 347\u2013355 (2005).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n PubMed<\/a>\u00a0
\n PubMed Central<\/a>\u00a0
\n CAS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Shubin, N. H., Daeschler, E. B. & Jenkins, F. A. Jr. The pectoral fin of Tiktaalik roseae and the origin of the tetrapod limb. Nature 440, 764\u2013771 (2006).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n PubMed<\/a>\u00a0
\n CAS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Camp, A. L. A neck-like vertebral motion in fish. Proc. R. Soc. B 288, 20211091 (2021).<\/p>\n

Article<\/a>\u00a0
\n PubMed<\/a>\u00a0
\n PubMed Central<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Jones, M. E. H. et al. The biomechanical role of the chondrocranium and the material properties of cartilage. Vertebr. Zool. 70, 699\u2013715 (2020).<\/p>\n


\n Google Scholar<\/a>\u00a0\n <\/p>\n

Andrews, S. M. & Westoll, T. S. IX.\u2014The postcranial skeleton of Eustenopteron foordi Whiteaves. Trans. R. Soc. Edinb. 68, 207\u2013329 (1970).<\/p>\n

Article<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Andrews, S. M. & Westoll, T. S. XII.\u2014The Postcranial skeleton of rhipidistian fishes excluding Eusthenopteron. Trans. R. Soc. Edinb. 68, 391\u2013489 (1970).<\/p>\n

Article<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Ahlberg, P. E., Clack, J. A. & Blom, H. The axial skeleton of the Devonian tetrapod Ichthyostega. Nature 437, 137\u2013140 (2005).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n PubMed<\/a>\u00a0
\n CAS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Sumida, S. S. & Lombard, R. E. The atlas-axis complex in the late Paleozoic genus Diadectes and the characteristics of the atlas-axis complex across the amphibian to amniote transition. J. Paleontol. 65, 973\u2013983 (1991).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Lepr\u00e9vost, A., Aza\u00efs, T., Trichet, M. & Sire, J.-Y. Vertebral development and ossification in the Siberian sturgeon (Acipenser baerii), with new insights on bone histology and ultrastructure of vertebral elements and scutes. Anat. Rec. 300, 437\u2013449 (2017).<\/p>\n

Article<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Long, J. H. Jr. Morphology, mechanics, and locomotion: the relation between the notochord and swimming motions in sturgeon. Environ. Biol. Fish. 44, 199\u2013211 (1995).<\/p>\n

Article<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Long, J. H. Jr, Koob-Emunds, M., Sinwell, B. & Koob, T. J. The notochord of hagfish Myxine glutinosa: visco-elastic properties and mechanical functions during steady swimming. J. Exp. Biol. 205, 3819\u20133831 (2002).<\/p>\n

Article<\/a>\u00a0
\n PubMed<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Kryvi, H. et al. The notochord in Atlantic salmon (Salmo salar L.) undergoes profound morphological and mechanical changes during development. J. Anat. 231, 639\u2013654 (2017).<\/p>\n

Article<\/a>\u00a0
\n PubMed<\/a>\u00a0
\n PubMed Central<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Adams, D. S., Keller, R. & Koehl, M. A. R. The mechanics of notochord elongation, straightening and stiffening in the embryo of Xenopus laevis. Development 110, 115\u2013130 (1990).<\/p>\n

Article<\/a>\u00a0
\n PubMed<\/a>\u00a0
\n CAS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Schnell, N. K., Britz, R. & Johnson, G. D. New insights into the complex structure and ontogeny of the occipito-vertebral gap in barbeled dragonfishes (Stomiidae, Teleostei). J. Morphol. 271, 1006\u20131022 (2010).<\/p>\n

Article<\/a>\u00a0
\n PubMed<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Jarvik, E. Structure of a Devonian fish: Eusthenopteron foordi. In Basic Structure and Function of Vertebrates Vol. 1, 99\u2013194 (Academic Press, 1980).<\/p>\n

Stewart, T. A. et al. The axial skeleton of Tiktaalik roseae. Proc. Natl Acad. Sci. USA 121, e2316106121 (2024).<\/p>\n

Article<\/a>\u00a0
\n PubMed<\/a>\u00a0
\n PubMed Central<\/a>\u00a0
\n CAS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Otoo, B. K. A., Bolt, J. R., Lombard, R. E., Angielczyk, K. D. & Coates, M. I. The postcranial anatomy of Whatcheeria deltae and its implications for the family Whatcheeriidae. Zool. J. Linn. Soc. 193, 700\u2013745 (2021).<\/p>\n

Article<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Godfrey, S. J. The postcranial skeletal anatomy of the carboniferous tetrapod Greererpeton burkemorani Romer, 1969. Phil. Trans. R. Soc. B 323, 75\u2013133 (1989).<\/p>\n

ADS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Case, E. C. A Revision of the Amphibia and Pisces of the Permian of North America (Carnegie Institution of Washington, 1911).<\/p>\n

Book<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Case, E. C. Description of a Collection of Associated Skeletons of Trimerorhachis (Univ. Michigan Press, 1935).<\/p>\n

Shishkin, M. A. Evolution of the cervical vertebrae in temnospondyl amphibians and differentiation of the early tetrapods. Paleontol. J. 34, 534\u2013546 (2000).<\/p>\n


\n Google Scholar<\/a>\u00a0\n <\/p>\n

Pawley, K. The postcranial skeleton of Trimerorhachis insignis Cope, 1878 (Temnospondyli: Trimerorhachidae): a plesiomorphic temnospondyl from the Lower Permian of North America. J. Paleontol. 81, 873\u2013894 (2007).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Molnar, J. L., Pierce, S. E., Bhullar, B.-A. S., Turner, A. H. & Hutchinson, J. R. Morphological and functional changes in the vertebral column with increasing aquatic adaptation in crocodylomorphs. R. Soc. Open Sci. 2, 150439 (2015).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n PubMed<\/a>\u00a0
\n PubMed Central<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Daeschler, E. B., Shubin, N. H. & Jenkins, F. A. Jr. A Devonian tetrapod-like fish and the evolution of the tetrapod body plan. Nature 440, 757\u2013763 (2006).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n PubMed<\/a>\u00a0
\n CAS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Coates, M. I. & Clack, J. A. Fish-like gills and breathing in the earliest known tetrapod. Nature 352, 234\u2013236 (1991).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Hohn-Schulte, B., Preuschoft, H., Witzel, U. & Distler-Hoffmann, C. Biomechanics and functional preconditions for terrestrial lifestyle in basal tetrapods, with special consideration of Tiktaalik roseae. Hist. Biol. 25, 167\u2013181 (2013).<\/p>\n

Article<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

VanBuren, C. S. & Evans, D. C. Evolution and function of anterior cervical vertebral fusion in tetrapods. Biol. Rev. 92, 608\u2013626 (2017).<\/p>\n

Article<\/a>\u00a0
\n PubMed<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Boisvert, C. A., Mark-Kurik, E. & Ahlberg, P. E. The pectoral fin of Panderichthys and the origin of digits. Nature 456, 636\u2013638 (2008).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n PubMed<\/a>\u00a0
\n CAS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Stewart, T. A. et al. Fin ray patterns at the fin-to-limb transition. Proc. Natl Acad. Sci. USA 117, 1612\u20131620 (2020).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n PubMed<\/a>\u00a0
\n CAS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Strong, C. R. C., Bishop, P. J., Hutchinson, J. R. & Pierce, S. E. Digital volumetric modeling reveals unique body plan experimentation in the Devonian tetrapod Ichthyostega. iScience 28, 112486 (2025).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n PubMed<\/a>\u00a0
\n PubMed Central<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Molnar, J. L., Hutchinson, J. R., Diogo, R., Clack, J. A. & Pierce, S. E. Evolution of forelimb musculoskeletal function across the fish-to-tetrapod transition. Sci. Adv. 7, eabd7457 (2021).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n PubMed<\/a>\u00a0
\n PubMed Central<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

King, H. M., Shubin, N. H., Coates, M. I. & Hale, M. E. Behavioral evidence for the evolution of walking and bounding before terrestriality in sarcopterygian fishes. Proc. Natl Acad. Sci. USA 108, 21146\u201321151 (2011).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n PubMed<\/a>\u00a0
\n PubMed Central<\/a>\u00a0
\n CAS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Pierce, S. E., Hutchinson, J. R. & Clack, J. A. Historical perspectives on the evolution of tetrapodomorph movement. Integr. Comp. Biol. 53, 209\u2013223 (2013).<\/p>\n

Article<\/a>\u00a0
\n PubMed<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Jones, K. E., Brocklehurst, R. J. & Pierce, S. E. AutoBend: an automated approach for estimating intervertebral joint function from bone-only digital models. Integr. Org. Biol. 3, obab026 (2021).<\/p>\n

Article<\/a>\u00a0
\n PubMed<\/a>\u00a0
\n PubMed Central<\/a>\u00a0
\n CAS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Werneburg, I. et al. Modeling neck mobility in fossil turtles. J. Exp. Zool. 324, 230\u2013243 (2015).<\/p>\n

Article<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Krings, M., Nyakatura, J. A., Boumans, M. L. L. M., Fischer, M. S. & Wagner, H. Barn owls maximize head rotations by a combination of yawing and rolling in functionally diverse regions of the neck. J. Anat. 231, 12\u201322 (2017).<\/p>\n

Article<\/a>\u00a0
\n PubMed<\/a>\u00a0
\n PubMed Central<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Lemberg, J. B., Daeschler, E. B. & Shubin, N. H. The feeding system of Tiktaalik roseae: an intermediate between suction feeding and biting. Proc. Natl Acad. Sci. USA 118, e2016421118 (2021).<\/p>\n

Article<\/a>\u00a0
\n PubMed<\/a>\u00a0
\n PubMed Central<\/a>\u00a0
\n CAS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Clack, J. A. The neurocranium of Acanthostega gunnari Jarvik and the evolution of the otic region in tetrapods. Zool. J. Linn. Soc. 122, 61\u201397 (1998).<\/p>\n

Porro, L. B., Rayfield, E. J. & Clack, J. A. Descriptive anatomy and three-dimensional reconstruction of the skull of the early tetrapod Acanthostega gunnari Jarvik, 1952. PLoS ONE 10, e0118882 (2015).<\/p>\n

Rueden, C. T. et al. ImageJ2: ImageJ for the next generation of scientific image data. BMC Bioinform. 18, 529 https:\/\/doi.org\/10.1186\/s12859-017-1934-z<\/a> (2017).<\/p>\n

Article<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Blender: a 3D modelling and rendering package v.4.0 http:\/\/www.blender.org<\/a> (Stichting Blender Foundation, 2018).<\/p>\n

Schindelin, J. et al. Fiji: an open-source platform for biological-image analysis. v1.54p. Nat. Methods 9, 676\u2013682 (2012).<\/p>\n

Article<\/a>\u00a0
\n PubMed<\/a>\u00a0
\n PubMed Central<\/a>\u00a0
\n CAS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

R: a language and environment for statistical computing v.4.3.3 https:\/\/www.R-project.org<\/a> (R Foundation for Statistical Computing, 2020).<\/p>\n

RStudio: integrated development for R v.2023.12.1 http:\/\/www.rstudio.com<\/a> (RStudio, 2019).<\/p>\n

Donatelli, C. M. CrshR. GitHub https:\/\/github.com\/CDonatelli\/CrshR<\/a> (2021).<\/p>\n

Donatelli, C. M. Korneisel_TetNecks_2026. GitHub https:\/\/github.com\/CDonatelli\/Korneisel_TetNecks_2026<\/a> (2026).<\/p>\n

Wickham, H. ggplot2: elegant graphics for data analysis. R v.4.0.1 https:\/\/ggplot2.tidyverse.org<\/a> (2016).<\/p>\n

Arnold, J. ggthemes: extra themes, scales and geoms for \u2018ggplot2\u2019. R v.5.1.0.9000 https:\/\/github.com\/jrnold\/ggthemes<\/a> (2025).<\/p>\n

Wickham, H., Hester, J. & Bryan, J. readr: read rectangular text data. R v.2.1.5 https:\/\/readr.tidyverse.org<\/a> (2024).<\/p>\n

Wickham, H., Fran\u00e7ois, R., Henry, L., M\u00fcller, K. & Vaughan, D. dplyr: a grammar of data manipulation. R v.1.1.4 https:\/\/dplyr.tidyverse.org<\/a> (2025).<\/p>\n

Neuwirth, E. RColorBrewer: ColorBrewer Palettes. R v.1.1-3 https:\/\/CRAN.R-project.org\/package=RColorBrewer<\/a> (2022).<\/p>\n

Hibbeler, R. C. Mechanics of Materials 8th edn (Pearson Prentice Hall, 2010).<\/p>\n


\n Google Scholar<\/a>\u00a0\n <\/p>\n

Wickham, H., Hester, J. & Bryan, J. readr: read rectangular text data. GitHub https:\/\/github.com\/tidyverse\/readr<\/a> (2024).<\/p>\n

Rospars, J.-P. & Meyer-Vernet, N. Force per cross-sectional area from molecules to muscles: a general property of biological motors. R. Soc. Open Sci. 3, 160313 (2016).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n PubMed<\/a>\u00a0
\n PubMed Central<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Gartner, S. M. et al. Suction feeding of West African lungfish (Protopterus annectens): an XROMM analysis of jaw mechanics, cranial kinesis, and hyoid mobility. Biol. Open 11, bio059447 (2022).<\/p>\n

Article<\/a>\u00a0
\n PubMed<\/a>\u00a0
\n PubMed Central<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Donatelli C. M. Korneisel_TetNecks26. figshare https:\/\/doi.org\/10.6084\/m9.figshare.33552199<\/a> (2026).<\/p>\n","protected":false},"excerpt":{"rendered":"Arratia, G., Schultze, H.-P. & Casciotta, J. Vertebral column and associated elements in dipnoans and comparison with other…\n","protected":false},"author":2,"featured_media":882951,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[32],"tags":[32247,1159,1160,56493,79],"class_list":["post-882950","post","type-post","status-publish","format-standard","has-post-thumbnail","category-science","tag-biological-techniques","tag-humanities-and-social-sciences","tag-multidisciplinary","tag-palaeontology","tag-science"],"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/posts\/882950","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/comments?post=882950"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/posts\/882950\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/media\/882951"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/media?parent=882950"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/categories?post=882950"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/tags?post=882950"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}