Abstract
The fauna of the Middle Devonian Red Hill I locality, Nevada, is unusual in the co-occurrence of a rich fish assemblage with a rich invertebrate one. Sponges are second in abundance of specimens and number of species only to the fishes and occur together with other invertebrates (conodonts, conulariids, dacryoconarid tentaculites, gastropods, bivalves, brachiopods, arthropods, and unidentifiable ammonoids and echinoderms). The invertebrates indicate a marine depositional paleoenvironment. The conodonts indicate a placement within the lower <i>disparalis</i> Zone, late Givetian. The fish assemblage is dominated by the antiarch <i>Asterolepis</i>. All the other fishes, acanthodians, actinopterygians and sarcopterygians, are less common. The closest biogeographic relationship of the fish fauna is with the Middle/Late Devonian fish fauna of the Baltic Region, followed by that of eastern Canada (Miguasha), Scotland and Iran. This distribution corresponds to the Devonian Euramerica faunal province with connection to eastern Gondwana (Iran and Australia). Localities with the same genera as Red Hill I are interpreted as marine with the exception of the Scottish localities. <i>Asterolepis</i> is the most widely distributed vertebrate genus, mostly marine, but it may be able to enter freshwater like <i>Eusthenopteron</i> if one accepts a freshwater depositional paleoenvironment for the Scottish localities. <br><br> doi:<a href="http://dx.doi.org/10.1002/mmng.201000001" target="_blank">10.1002/mmng.201000001</a>
Highlights
Red Hill I forms the northern end of the Northern Simpson Park Range, northwest of Eureka, Nevada
The locality was discovered by Michael Murphy from University of California, Riverside, California, in 1973
The Middle/Late Devonian boundary lies within the Red Hill Beds just above the fish beds
Summary
Red Hill I forms the northern end of the Northern Simpson Park Range, northwest of Eureka, Nevada. The Middle/Late Devonian boundary lies within the Red Hill Beds just above the fish beds. The placement of the Red Hill I fish beds into the earliest Late Devonian
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
