Archosaur Diversity Tobias Landberg, Ph.D. Director of Research The - - PowerPoint PPT Presentation

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Archosaur Diversity Tobias Landberg, Ph.D. Director of Research The - - PowerPoint PPT Presentation

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Archosaur Diversity Tobias Landberg, Ph.D. Director of Research The Amphibian Foundation tobias@amphibianfoundation.org Archosaur Diversity Archosaur Diversity T=tibia, F=fibula, A=astragalus, C=calcaneum Brusatte, S.L., Benton, M.J., Lloyd,

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Archosaur Diversity

Tobias Landberg, Ph.D.

Director of Research The Amphibian Foundation tobias@amphibianfoundation.org

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Archosaur Diversity

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Brusatte, S.L., Benton, M.J., Lloyd, G.T., Ruta, M. and Wang, S.C., 2010. Macroevolutionary patterns in the evolutionary radiation of archosaurs (Tetrapoda: Diapsida). Earth and Environmental Science Transactions of the Royal Society of Edinburgh, 101(3/4), p.367.

T=tibia, F=fibula, A=astragalus, C=calcaneum

Archosaur Diversity

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Brusatte, S.L., Benton, M.J., Lloyd, G.T., Ruta, M. and Wang, S.C., 2010. Macroevolutionary patterns in the evolutionary radiation of archosaurs (Tetrapoda: Diapsida). Earth and Environmental Science Transactions of the Royal Society of Edinburgh, 101(3/4), p.367.

Archosaur Diversity

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Brocklehurst, R.J., Schachner, E.R., Codd, J.R. and Sellers, W.I., 2020. Respiratory evolution in archosaurs. Phil.Transactions of the Royal Society B, 375(1793), p.20190140. Carrier, D.R., 1987. The evolution of locomotor stamina in tetrapods: circumventing a mechanical constraint. Paleobiology, pp.326-341.

Archosaur Diversity

The reptilian idea of fun Is to bask all day in the sun A physiological barrier Discovered by Carrier Says they can’t breathe when they run

  • R. Cowen
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Archosaur Diversity

Illustration Credit: Eleanor Lutz, See also https://www.youtube.com/watch?v=kWMmyVu1ueY

Archosaur Diversity

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Archosaur Diversity

Illustration Credit: Eleanor Lutz, See also https://www.youtube.com/watch?v=kWMmyVu1ueY

Archosaur Diversity

Brocklehurst, R.J., Moritz, S., Codd, J., Sellers, W.I. and Brainerd, E.L., 2017. Rib kinematics during lung ventilation in the American alligator (Alligator mississippiensis): an XROMM analysis. Journal of Experimental Biology, 220(17), pp.3181-3190.

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Brocklehurst, R.J., Moritz, S., Codd, J., Sellers, W.I. and Brainerd, E.L., 2017. Rib kinematics during lung ventilation in the American alligator (Alligator mississippiensis): an XROMM analysis. Journal of Experimental Biology, 220(17), pp.3181-3190.

Archosaur Diversity

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O'Connor, P .M. and Claessens, L.P ., 2005. Basic avian pulmonary design and flow-through ventilation in non-avian theropod dinosaurs. Nature, 436(7048), pp.253-256. Claessens, L.P ., O'Connor, P .M. and Unwin, D.M., 2009. Respiratory evolution facilitated the origin of pterosaur flight and aerial gigantism. PloS one, 4(2), p.e4497.

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Benson, R. B. J., Butler, R. J., Carrano, M. T., & O’Connor, P . M. (2011). Air-filled postcranial bones in theropod dinosaurs: physiological implications and the “reptile”-bird transition. Biological Reviews, 87(1), 168–193.

Archosaur Diversity

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Dial, K.P ., 2003. Wing-assisted incline running and the evolution of flight. Science, 299(5605), pp.402-404.

Archosaur Diversity

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Dial, K.P ., 2003. Wing-assisted incline running and the evolution of flight. Science, 299(5605), pp.402-404.

Archosaur Diversity

  • Dr. Thomas R. Holtz, Jr.
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Dial, K.P ., 2003. Wing-assisted incline running and the evolution of flight. Science, 299(5605), pp.402-404.

Archosaur Diversity

  • Dr. Thomas R. Holtz, Jr.
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Dial, K.P ., 2003. Wing-assisted incline running and the evolution of flight. Science, 299(5605), pp.402-404.

Archosaur Diversity

  • Dr. Thomas R. Holtz, Jr.
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Archosaur Diversity

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Dial, K.P ., 2003. Wing-assisted incline running and the evolution of flight. Science, 299(5605), pp.402-404.

Archosaur Diversity

  • Dr. Thomas R. Holtz, Jr.
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Dial, K.P ., 2003. Wing-assisted incline running and the evolution of flight. Science, 299(5605), pp.402-404.

Archosaur Diversity

  • Dr. Thomas R. Holtz, Jr.
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Chen, P .J., Dong, Z.M. and Zhen, S.N., 1998. An exceptionally well-preserved theropod dinosaur from the Yixian Formation of China. Nature, 391(6663), pp.147-152. Kurochkin, E.N. and Bogdanovich, I.A., 2008. On the origin of avian flight: compromise and system approaches. Biology Bulletin, 35(1), pp.1-11.

Archosaur Diversity

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Perrichot, V., Marion, L., Néraudeau, D., Vullo, R. and Tafforeau, P ., 2008. The early evolution of feathers: fossil evidence from Cretaceous amber of France. Proceedings of the Royal Society B: Biological Sciences, 275(1639), pp.1197-1202.

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Brusatte, S.L., O’Connor, J.K. and Jarvis, E.D., 2015. The origin and diversification of birds. Current Biology, 25(19), pp.R888-R898.

Archosaur Diversity

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Dial, K.P ., 2003. Wing-assisted incline running and the evolution of flight. Science, 299(5605), pp.402-404.

Archosaur Diversity

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Dial, K.P ., 2003. Wing-assisted incline running and the evolution of flight. Science, 299(5605), pp.402-404.

Archosaur Diversity

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Prum, R.O., Berv, J.S., Dornburg, A., Field, D.J., Townsend, J.P ., Lemmon, E.M. and Lemmon, A.R., 2015. A comprehensive phylogeny of birds (Aves) using targeted next-generation DNA sequencing. Nature, 526(7574), pp.569-573.

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Prum, R.O., Berv, J.S., Dornburg, A., Field, D.J., Townsend, J.P ., Lemmon, E.M. and Lemmon, A.R., 2015. A comprehensive phylogeny of birds (Aves) using targeted next-generation DNA sequencing. Nature, 526(7574), pp.569-573.

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Archosaur Diversity

Pigot, A.L., Sheard, C., Miller, E.T., Bregman, T.P ., Freeman, B.G., Roll, U., Seddon, N., Trisos, C.H., Weeks, B.C. and Tobias, J.A., 2020. Macroevolutionary convergence connects morphological form to ecological function in birds. Nature Ecology & Evolution, 4(2), pp.230-239.

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Archosaur Diversity

Pigot, A.L., Sheard, C., Miller, E.T., Bregman, T.P ., Freeman, B.G., Roll, U., Seddon, N., Trisos, C.H., Weeks, B.C. and Tobias, J.A., 2020. Macroevolutionary convergence connects morphological form to ecological function in birds. Nature Ecology & Evolution, 4(2), pp.230-239.

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Pigot, A.L., Sheard, C., Miller, E.T., Bregman, T.P ., Freeman, B.G., Roll, U., Seddon, N., Trisos, C.H., Weeks, B.C. and Tobias, J.A., 2020. Macroevolutionary convergence connects morphological form to ecological function in birds. Nature Ecology & Evolution, 4(2), pp.230-239.

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Brusatte, S.L., Benton, M.J., Lloyd, G.T., Ruta, M. and Wang, S.C., 2010. Macroevolutionary patterns in the evolutionary radiation of archosaurs (Tetrapoda: Diapsida). Earth and Environmental Science Transactions of the Royal Society of Edinburgh, 101(3/4), p.367.

T=tibia, F=fibula, A=astragalus, C=calcaneum

Archosaur Diversity

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Brochu, C. A. (2000). "Phylogenetic relationships and divergence timing of Crocodylus based on morphology and the fossil record." Copeia(3): 657-673. Fish, F. E., S. A. Bostic, et al. (2007). "Death roll of the alligator: mechanics of twist feeding in water." Journal of Experimental Biology 210(16): 2811-2818.

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Senter, P ., 2008. Homology between and antiquity of stereotyped communicatory behaviors of crocodilians. Journal of Herpetology, 42(2), pp.354-360.

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Murray, C.M., Crother, B.I. and Doody, J.S., 2020. The evolution of crocodilian nesting ecology and behavior. Ecology and Evolution, 10(1), pp.131-149.

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Lang, J.W. and Andrews, H.V., 1994. Temperature-dependent sex determination in crocodilians. Journal of Experimental Zoology, 270(1), pp.28-44.

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Finger, J.W. and Gogal, R.M., 2013. Endocrine-disrupting chemical exposure and the American alligator: a review of the potential role of environmental estrogens on the immune system of a top trophic carnivore. Archives of environmental contamination and toxicology, 65(4), pp.704-714.

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Alligator sinensis Chinese Alligator

n=~75 critically endangered

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Archosaur Diversity

Crocodylus intermedius Orinoco Crocodile n=~190 critically endangered

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Archosaur Diversity

Crocodylus mindorensis Philippine Crocodile n=~115 critically endangered

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Archosaur Diversity

Crocodylus rhombifer Cuban Crocodile n=~750 critically endangered

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Archosaur Diversity

Crocodylus siamensis Saimese Crocodile n=~750 critically endangered

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Archosaur Diversity

Gavialis gangeticus Gharial n=~650 critically endangered

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Archosaur Diversity

Tomistoma schlegelii False Gharial n=~6500 endangered

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Archosaur Diversity

American Alligator: Endangered species 1967-1987

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American Alligator: Endangered species 1967-1987

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Archosaur Diversity

American Alligator: Endangered species 1967-1987

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American Alligator: Endangered species 1967-1987

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Dinets, V., Brueggen, J.C. and Brueggen, J.D., 2015. Crocodilians use tools for

  • hunting. Ethology Ecology & Evolution, 27(1), pp.74-78.
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Thank you!

Tobias Landberg, Ph.D.

Director of Research and the Conservation Research Bridge Program http://bridge.amphibianfoundation.org/

@sciencethegap

Questions? Comments?