Devonian Landscape Heterogeneity Recorded by a Giant Fungus

DSpace/Manakin Repository

Devonian Landscape Heterogeneity Recorded by a Giant Fungus

Citable link to this page

. . . . . .

Title: Devonian Landscape Heterogeneity Recorded by a Giant Fungus
Author: Hueber, Francis M.; Hazen, Robert M.; Cody, George D.; Fogel, Marilyn L.; Hotton, Carol L.; Boyce, C. Kevin; Knoll, Andrew Herbert

Note: Order does not necessarily reflect citation order of authors.

Citation: Boyce, C. Kevin, Carol L. Hotton, Marilyn L. Fogel, George D. Cody, Robert M. Hazen, Andrew H. Knoll, and Francis M. Hueber. 2007. Devonian landscape heterogeneity recorded by a giant fungus. Geology 35(5): 399-402.
Access Status: At the direction of the depositing author this work is not currently accessible through DASH.
Full Text & Related Files:
Abstract: The enigmatic Paleozoic fossil Prototaxites Dawson 1859 consists of tree-like trunks as long as 8 m constructed of interwoven tubes <50 mm in diameter. Prototaxites specimens from five localities differ from contemporaneous vascular plants by exhibiting a carbon isotopic range, within and between localities, of as much as 13%0 delta C-13. Pyrolysis-gas chromatography-mass spectrometry highlights compositional differences between Prototaxites and co-occurring plant fossils and supports interpretation of isotopic distinctions as biological rather than diagenetic in origin. Such a large isotopic range is difficult to reconcile with an autotrophic metabolism, suggesting instead that, consistent with anatomy-based interpretation as a fungus, Prototaxites was a heterotroph that lived on isotopically heterogeneous substrates. Light isotopic values of Prototaxites approximate those of vascular plants from the same localities; in contrast, heavy extremes seen in the Lower Devonian appear to reflect consumption of primary producers with carbon-concentrating mechanisms, such as cryptobiotic soil crusts, or possibly bryophytes. Prototaxites biogeochemistry thus suggests that a biologically heterogeneous mosaic of primary producers characterized land surfaces well into the vascular plant era.
Published Version: http://dx.doi.org/10.1130/G23384A.1
Other Sources: http://melts.geology.washington.edu/people/boyce_reprints/2007GeologyPrototaxites.pdf
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:3293011

Show full Dublin Core record

This item appears in the following Collection(s)

  • FAS Scholarly Articles [7470]
    Peer reviewed scholarly articles from the Faculty of Arts and Sciences of Harvard University
 
 

Search DASH


Advanced Search
 
 

Submitters