Ptychoparella longus (Palmer in Palmer & Halley, 1979)
Name: [Syspacephalus longus Palmer in Palmer & Halley, 1979] =
Ptychoparella
longus
(see Jell & Adrain, 2003)
Locality: Lincoln
County, Nevada
Stratigraphy: Pyramid
Shale Member of the Carrara Formation, Lower Middle Cambrian
Remarks: Richie
Kurkewicz Pangaea Collection
Note: Not everyone agrees with the synonomy of Syspacephalus and Ptychoparella.