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Protichnites eremita unshelled? Experimental model-based neoichnology and new evidence for a euthycarcinoid affinity for this ichnospecies

  • Joseph H. Collette (a1), Kenneth C. Gass (a2) and James W. Hagadorn (a3)
Abstract

Protichnites eremita from the Cambrian Elk Mound Group of Wisconsin is reinterpreted based on new material and trackway experiments. Two new forms of P. eremita suggest that the discrete medial imprints of these traces could be produced by the segmented postabdomen of euthycarcinoids from the same deposit. Form 1 could have been produced by a pair of euthycarcinoids traveling together, like in limulid amplexus, where both individuals made imprints with their postabdomens. In this scenario, if one individual held its postabdomen to the left side, it is possible to produce left-handed shingling in trackways and angled segmentation of each medial imprint. Form 2 could have been produced by a single animal traveling in arcing or tightly looping paths. Experimentally-produced medial imprints yield morphologies that are consistent with both trackway forms. Thus, it seems more likely that P. eremita was produced directly by the animal's body (alone or paired) rather than by employing hermit-like behavior.

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S. J. Braddy 2001. Eurypterid palaeoecology: Palaeobiological, ichnological and comparative evidence for a ‘mass-moult-mate’ hypothesis. Palaeogeography, Palaeoclimatology, Palaeoecology, 172:115132.

J. H. Collette and J. W. Hagadorn 2010. Three-dimensionally preserved arthropods from Cambrian Lagerstätten of Quebec and Wisconsin. Journal of Paleontology, 84:646667.

J. H. Collette , J. W. Hagadorn , and M. A. Lacelle 2010. Dead in their tracks: Cambrian arthropods and their traces from intertidal sandstones of Quebec and Wisconsin. Palaios, 25:475486.

G. D. Edgecombe and H. Morgan 2001. Synaustrus and the euthycarcinoid puzzle. Alcheringa, 23:193213.

J. C. Gutiérrez-Marco , A. A. , D. C. García-Bellido , I. Rábano , and M. Valério 2009. Giant trilobites and trilobite clusters from the Ordovician of Portugal. Geology, 37:443446.

J. W. Hagadorn , J. H. Collette , and E. S. Belt 2011. Eolian-aquatic deposits and faunas of the middle Cambrian Potsdam Group. Palaios, 26:314334.

J. W. Hagadorn and A. Seilacher 2009. Hermit arthropods 500 million years ago? Geology, 37:295298.

J. W. Hagadorn , R. H. Dott , and D. Damrow 2002. Stranded on a late Cambrian shoreline: Medusae from Central Wisconsin. Geology, 30:147150.

X-G. Hou , D. J. Siveter , R. J. Aldridge , and D. J. Siveter 2008. Collective Behavior in an early Cambrian Arthropod. Science, 322:224.

W. E. Logan 1851. On the occurrence of a track and footprints of an animal in the Potsdam Sandstone of lower Canada. Geological Society of London Quarterly Journal, 7:247250.

R. B. MacNaughton , J. M. Cole , R. B. Dalrymple , S. J. Braddy , D. E. G. Briggs , and T. D. Lukie 2002. First steps on land: Arthropod trackways in Cambrian–Ordovician eolian sandstone, southeastern Ontario, Canada. Geology, 30:391394.

N. J. Minter , S. J. Braddy , and R. B. Davis 2007. Between a rock and a hard place: Arthropod trackways and ichnotaxonomy. Lethaia, 40:365375.

L. B. Morrissey and S. J. Braddy 2004. Terrestrial trace fossils from the Lower Old Red Sandstone, southwest Wales. Geological Journal, 39:315336.

R. Owen 1852. Description of the impressions and footprints of the Protichnites from the Potsdam Sandstone of Canada. Geological Society of London Quarterly Journal, 8:214225.

A. Seilacher 2008. Biomats, biofilms, and bioglue as preservational agents for arthropod trackways. Palaeogeography, Palaeoclimatology, Palaeoecology, 270:252257.

M. B. Vrazo and S. J. Braddy 2011. Testing the ‘mass-moult-mate’ hypothesis of eurypterid palaeoecology. Palaeogeography, Palaeoclimatology, Palaeoecology, 311:6373.

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Journal of Paleontology
  • ISSN: 0022-3360
  • EISSN: 1937-2337
  • URL: /core/journals/journal-of-paleontology
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