Experimental Approaches to Understanding Fossil Organisms: by Daniel I. Hembree, Brian F. Platt, Jon J. Smith

By Daniel I. Hembree, Brian F. Platt, Jon J. Smith

Paleontologists and geologists fight with learn questions usually advanced via the loss or perhaps absence of key paleobiological and paleoenvironmental details. perception into this lacking info might be won via direct exploration of analogous residing organisms and smooth environments. inventive, experimental and interdisciplinary remedies of such ancient-Earth analogs shape the root of classes from the residing. This quantity unites a various variety of specialist paleontologists, neontologists and geologists featuring case reports that hide a spectrum of themes, together with practical morphology, taphonomy, environments and organism-substrate interactions.

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Brenda Hunda and the Cincinnati Museum Center are thanked for the loan of specimens. Jessica Cundiff at the MCZ assisted with access to their specimens of Ancyrocrinus. Chris Honeycutt brought the arrow analogy to our attention. Steve Vogel suggested how to measure the lateral forces. The manuscript was improved by reviews from Brian Platt and an anonymous reviewer; they are thanked. This material is based upon work supported by the National Science Foundation under EAR 0921771. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the National Science Foundation.

In an aquatic faunal survey in southeastern Peru, occurrences of the ultra-elongate taxa Mycetopoda soleniformis and Mycetopodella falcata in fluvial firm grounds were documented (Fig. 5). The study area included the Ríos Las Piedras (Madre de Dios drainage), Juruá, and Purús, which drain the Fitzcarrald Arch, a structural/geomorphic feature in southeastern Peru and western Brazil. These rivers are incised, exposing Neogene sediments in some cutbanks (Dumont et al. 1990; Antoine et al. 2007). Where incision reaches well-consolidated clays, these sediments typically form the local base level and are exposed at and below the average dry-season water level in cutbanks and rapids (Campbell et al.

B Mycetopodella falcata (Río Juruá, Peru). c Elliptio shepardiana (Altamaha River, Georgia). d Lamproscapha ensiformis (Brazil). e Solenaia iridinea (China). f Chelidonopsis hirundo (Democratic Republic of Congo). g Cuneopsis celtiformis (China). h Lanceolaria grayana (China). i Lortiella rugata (Australia). j Arconaia lanceolata (China). Images a and b are of specimens collected by the author. Image c is of a specimen in the Invertebrate Zoology collections of the California Academy of Sciences.

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