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ABSTRACT
The discovery of the network trace fossil Multina isp. in the Luning Formation of central Nevada provides new insight into the depositional setting of the Shaly Limestone Member of the Luning Formation. The ichnofossils occur in tabular mudstone beds deposited on a shelf environment or open carbonate platform. Although Multina resembles Paleodictyon, as both share polygonal burrow nets and both frequently occur in deep-water habitats, Multina is less regular and has other morphological traits such as crossing burrow branches not seen in Paleodictyon or Protopaleodictyon.
Acknowledgments
We wish to express our sincere thanks to B. C. Gonzalez, D. Kietsmann, L. Orr, D. Orr, N. Hodge, C. C. Holmes, J. M. McMenamin, R. Minichiello, G. Marchand, A. Seilacher, A. Uchman, and R. Riggs, the makers of the iTouchMap.com software, and an anonymous reviewer for assistance with various aspects of this research.
Funding
This work was supported by Mount Holyoke College Faculty Grants to MASM and Mount Holyoke Summer Research Fellowships to both MCH and LPZ.
ORCID
Mark A. S. McMenamin http://orcid.org/0000-0002-3764-0963