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Titolo:
Paleolimulus, an early limuline (Xiphosurida), from Pennsylvanian-Permian Lagerstatten of Kansas and taphonomic comparison with modern Limulus
Autore:
Babcock, LE; Merriam, DF; West, RR;
Indirizzi:
Ohio State Univ, Dept Geol Sci, Columbus, OH 43210 USA Ohio State Univ Columbus OH USA 43210 pt Geol Sci, Columbus, OH 43210 USA Univ Kansas, Kansas Geol Survey, Lawrence, KS 66047 USA Univ Kansas Lawrence KS USA 66047 sas Geol Survey, Lawrence, KS 66047 USA Kansas State Univ, Dept Geol, Manhattan, KS 66506 USA Kansas State Univ Manhattan KS USA 66506 pt Geol, Manhattan, KS 66506 USA
Titolo Testata:
LETHAIA
fascicolo: 3, volume: 33, anno: 2000,
pagine: 129 - 141
SICI:
0024-1164(200009)33:3<129:PAEL(F>2.0.ZU;2-B
Fonte:
ISI
Lingua:
ENG
Soggetto:
DECAY; THRESHOLDS; FOSSILS; BIOTA;
Keywords:
arthropod; horseshoe crab; Kansas; Pennsylvanian; Permian; taphonomy; Xiphosurid;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
79
Recensione:
Indirizzi per estratti:
Indirizzo: Babcock, LE Ohio State Univ, Dept Geol Sci, Columbus, OH 43210 USA Ohio State Univ Columbus OH USA 43210 Columbus, OH 43210 USA
Citazione:
L.E. Babcock et al., "Paleolimulus, an early limuline (Xiphosurida), from Pennsylvanian-Permian Lagerstatten of Kansas and taphonomic comparison with modern Limulus", LETHAIA, 33(3), 2000, pp. 129-141

Abstract

The Pennsylvanian-Permian horseshoe crab Paleolimulus signatus (Beecher), incorporating as a junior synonym P. avitus Dunbar, is one of the earliest species of the Limulina (Xiphosurida). Some specimens from Kansas, USA, areexceptionally well preserved, retaining intact book gills and appendages. Indistinct, bilobed burrowing traces of variable width occur in associationwith some examples of P. signatus and may have been produced by that animal. Based on actualistic taphonomic experiments on Limulus polyphemns, ancient horseshoe crabs and other arthropods having non-mineralized exoskeletonsare inferred to have become pliable soon after death or moulting, and to have disarticulated slowly prior to burial. Extreme compression, wrinkling, and loose folding of sclerites are attributed to burial of a pliable exoskeleton. Slow preburial disarticulation partly accounts for the exceptional preservation of Paleolimulus remains. Also relevant for the exceptional preservation of these arthropods was burial in estuarine, tidal flat, or lacustrine environments. Because of fluctuating salinity and possibly dessicatingconditions, these settings were limiting to scavengers, burrowers, and some microbes that could potentially disarticulate or decompose xiphosurid remains.

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Documento generato il 13/07/20 alle ore 17:17:24