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The walking dead: Blender as a tool for paleontologists with a case study on extinct arachnids

  • Russell Garwood (a1) and Jason Dunlop (a2)

This paper serves two roles. First, it acts as an introduction to Blender, an open-source computer graphics program, which can be of utility to paleontologists. To lessen the software's otherwise steep learning curve, a step-by-step guide to create an idealized reconstruction of a fossil in the form of a three-dimensional model in Blender, or to use the software to render results from ‘virtual paleontology' techniques, is provided as an online supplemental data file. Second, here we demonstrate the use of Blender with a case study on the extinct trigonotarbid arachnids. We report the limb articulations of members of the Devonian genus Palaeocharinus on the basis of exceptionally preserved fossils from the Rhynie Cherts of Scotland. We use these newly reported articulations to create a Blender model, and draw comparisons with the gait of extant arachnids to produce as accurate a representation of the trigonotarbid flexing its limbs and walking as possible, presented in additional online supplemental data files. Knowledge of the limb articulations of trigonotarbid arachnids also allows us to discuss their functional morphology: trigonotarbids' limbs and gait were likely comparable to extant cursorial spiders, but lacked some innovations seen in more derived arachnids.

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F. G. Barth 1985. Slit sensilla and the measurement of cuticular strains, p. 162188. InNeurobiology of Arachnids. Springer-Verlag, New York.

F. Barth 2012. Strain and substrate motion: spider strain detection; p. 251273. In F. G. Barth , J. A. C. Humphrey , and M. V. Srinivasan (eds.), Frontiers in Sensing. Springer.

C. M. Biancardi , C. G. Fabrica , P. Polero , J. F. Loss , and A. E. Minetti 2011. Biomechanics of octopedal locomotion: kinematic and kinetic analysis of the spider Grammostola mollicoma. The Journal of Experimental Biology, 214:3,4333,442.

M. F. Claridge and A. G. Lyon 1961. Lung-books in the Devonian Palaeocharinidae (Arachnida). Nature, 191:1,1901,191.

R. L. Cook , T. Porter , and L. Carpenter 1984. Distributed Ray Tracing. Computer Graphics, 18:137145.

J. A. Dunlop and R. Rößler 2013. The youngest trigonotarbid, from the Permian of Chemnitz in Germany. Fossil Record, 16:229243.

J. A. Dunlop and P. A. Selden 2004. A trigonotarbid arachnid from the Lower Devonian of Tredomen, Wales. Palaeontology, 47:1,4691,476.

J. A. Dunlop , C. Kamenz , and G. Talarico 2009. A fossil trigonotarbid arachnid with a ricinuleid-like pedipalpal claw. Zoomorphology, 128:305313.

S. R. Fayers , J. A. Dunlop , and N. H. Trewin 2005. A new Early Devonian trigonotarbid arachnid from the Windyfield Chert, Rhynie, Scotland. Journal of Systematic Palaeontology, 2:269284.

R. J. Garwood and J. A. Dunlop 2011. Morphology and systematics of Anthracomartidae (Arachnida: Trigonotarbida). Palaeontology, 54:145161.

R. J. Garwood , J. A. Dunlop , G. Giribet , and M. D. Sutton 2011. Anatomically modern Carboniferous harvestmen demonstrate early cladogenesis and stasis in Opiliones. Nature Communications, 2:444.

R. J. Garwood , J. A. Dunlop , and M. D. Sutton 2009. High-fidelity X-ray micro-tomography reconstruction of siderite-hosted Carboniferous arachnids. Biology Letters, 5:841844.

R. J. Garwood , I. A. Rahman , and M. D. Sutton 2010. From clergymen to computers—the advent of virtual palaeontology. Geology Today, 26:96100.

R. J. Garwood , A. Ross , D. Sotty , D. Chabard , S. Charbonnier , M. D. Sutton , and P. J. Withers 2012. Tomographic Reconstruction of Neopterous Carboniferous Insect Nymphs. PLoS ONE, 7:e45779.

R. J. Garwood and M. D. Sutton 2010. X-ray micro-tomography of Carboniferous stem-Dictyoptera: new insights into early insects. Biology Letters, 6:699702.

J. T. Haug , D. Waloszek , A. Maas , Y. Liu , and C. Haug 2012. Functional morphology, ontogeny and evolution of mantis shrimp-like predators in the Cambrian. Palaeontology, 55:369399.

S. Hirst 1923. On some arachnid remains from the Old Red Sandstone. Annals and Magazine of Natural History, 12:455474.

J. R. Hutchinson , F. C. Anderson , S. S. Blemker , and S. L. Delp 2005. Analysis of hindlimb muscle moment arms in Tyrannosaurus rex using a three-dimensional musculoskeletal computer model: implications for stance, gait, and speed. Palaeobiology 31:676701.

M. Hyžný , Š. Józsa , J. A. Dunlop , and P. A. Selden 2013. A fossil arachnid from Slovakia: the Carboniferous trigonotarbid Anthracomartus voelkelianus Karsch, 1882. Arachnology, 16:2126.

C. Kamenz , J. A. Dunlop , G. Scholtz , H. Kerp , and H. Hass 2008. Microanatomy of Early Devonian book lungs. Biology Letters, 4:212215.

S. F. Parry , S. R. Noble , Q. G. Crowley , and C. H. Wellman 2011. A high-precision U–Pb age constraint on the Rhynie Chert Konservat-Lagerstätte: time scale and other implications. Journal of the Geological Society, London, 168:863872.

A. R. Pepato , C. E. F. Rocha , and J. A. Dunlop 2010. Phylogenetic position of the acariform mites: sensitivity to homology assessment under total evidence. BMC Evolutionary Biology, 10:123.

M. Pittman , S. M. Gatesy , P. Upchurch , A. Goswami , and J. R. Hutchinson 2013. Shake a tail feather: the evolution of the theropod tail into a stiff aerodynamic surface. PLoS ONE, 8:e63115.

M. Poschmann and J. A. Dunlop 2010. Trigonotarbid arachnids from the Lower Devonian (lower Emsian) of Alken an der Mosel (Rhineland-Palatinate, SW Germany). Paläontologische Zeitschrift, 84:467484.

M. Poschmann and J. A. Dunlop 2011. Trigonotarbid arachnids from the Lower Devonian (Siegenian) of Bürdenbach (Lahrbach Valley, Westerwald area, Rhenish Slate Mountains, Germany). Paläontologische Zeitschrift, 85:433447.

C. M. Rice , N. H. Trewin , and L. I. Anderson 2002. Geological setting of the Early Devonian Rhynie cherts, Aberdeenshire, Scotland: an early terrestrial hot spring system. Journal of the Geological Society, 159:203214.

W. A. Shear 2000. Gigantocharinus szatmaryi, a new trigonotarbid arachnid from the Late Devonian of North America (Chelicerata: Arachnida: Trigonotarbida). Journal of Paleontology, 74:2531.

J. W. Shultz 1989. Morphology of locomotor appendages in Arachnida: evolutionary trends and phylogenetic implications. Zoological Journal of the Linnean Society, 97:155.

J. W. Shultz 1990. Evolutionary morphology and phylogeny of Arachnida. Cladistics, 6:138.

J. W. Shultz 1999. Muscular anatomy of a whipspider, Phrynus longipes (Pocock) (Arachnida: Amblypygi), and its evolutionary significance. Zoological Journal of the Linnean Society, 126:81116.

J. W. Shultz 2007. A phylogenetic analysis of the arachnid orders based on morphological characters. Zoological Journal of the Linnean Society, 150:221265.

J. C. Spagna and A. M. Peattie 2012. Terrestrial locomotion in arachnids. Journal of Insect Physiology, 58:599606.

J. C. Spagna , E. A. Valdivia , and V. Mohan 2011. Gait characteristics of two fast-running spider species (Hololena adnexa and Hololena curta), including an aerial phase (Araneae: Agelenidae). Journal of Arachnology, 39:8491.

A. R. T. Spencer , J. Hilton , and M. D. Sutton 2012. Combined methodologies for three-dimensional reconstruction of fossil plants preserved in siderite nodules: Stephanospermum braidwoodensis nov. sp. (Medullosales) from the Mazon Creek lagerstätte. Review of Palaeobotany and Palynology, 188:117.

M. Stein 2010. A new arthropod from the early Cambrian of North Greenland, with a “great appendage”-like antennula. Zoological Journal of the Linnean Society, 158:477500.

M. Stein and P. A. Selden 2012. A restudy of the Burgess Shale (Cambrian) arthropod Emeraldella brocki and reassessment of its affinities. Journal of Systematic Palaeontology, 10:361383.

M. D. Sutton 2008. Tomographic techniques for the study of exceptionally preserved fossils. Proceedings of the Royal Society of London, Series B, Biological Sciences, 275:1,5871,593.

S. Zamora , I. A. Rahman , and A. B. Smith 2012. Plated Cambrian bilaterians reveal the earliest stages of echinoderm evolution. PLoS ONE, 7:e38296.

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Journal of Paleontology
  • ISSN: 0022-3360
  • EISSN: 1937-2337
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