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Protogrammoceras (Paltarpites) paltum
Taxonomy
Paltarpites paltus was named by Buckman (1922).
It was recombined as Protogrammoceras paltum by Hall and Howarth (1983); it was recombined as Protogrammoceras (Protogrammoceras) paltum by Howarth (1992), Smith and Tipper (1996); it was recombined as Protogrammoceras (Paltarpites) paltum by Bécaud (2006), Bécaud (2008).
It was recombined as Protogrammoceras paltum by Hall and Howarth (1983); it was recombined as Protogrammoceras (Protogrammoceras) paltum by Howarth (1992), Smith and Tipper (1996); it was recombined as Protogrammoceras (Paltarpites) paltum by Bécaud (2006), Bécaud (2008).
Sister species lacking formal opinion data