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Orthis (Plectorthis) christianiae
Taxonomy
Orthis christianiae was named by Kjerulf (1865).
It was recombined as Eoorthis christianiae by Brøgger (1882); it was recombined as Orthis (Plectorthis) christianiae by Walcott (1905); it was recombined as Eoorthis christiania by Ebbestad (1999); it was recombined as Archaeorthis christianiae by Schuchert and Cooper (1932), Hints and Harper (2003).
It was recombined as Eoorthis christianiae by Brøgger (1882); it was recombined as Orthis (Plectorthis) christianiae by Walcott (1905); it was recombined as Eoorthis christiania by Ebbestad (1999); it was recombined as Archaeorthis christianiae by Schuchert and Cooper (1932), Hints and Harper (2003).
Sister species lacking formal opinion data