Placenticeras syrtale
(Morton) 1834, ? female, formerly refered to
P. planum
Hyatt 1903, found in the Lower Emery Sandstone Member of the Mancos Shale, associated with
Clioscaphites vermiformis.
This specimen is 530mm dia.
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Placenticeras syrtale (Morton) 1834, ? female,
formerly refered to P. planum Hyatt
1903, found in the Lower Emery Sandstone Member
of the Mancos Shale, associated with Clioscaphites vermiformis. This
specimen is 530mm dia.