Received: 25 June 2018
Accepted: 13 December 2018
First Online: 8 January 2019
Change Date: 7 June 2021
Change Type: Correction
Change Details: A Correction to this paper has been published:
Change Details: https://doi.org/10.1186/S12862-021-01843-4
Ethics approval and consent to participate
: Permission to excavate at the Stonington Peninsular locality was given by the Board of Commissioners of Delta County, Michigan.
: Not applicable.
: The authors declare they have no competing interests.
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