Classification of Zuykov and Egerquist 2005
Or. †Orthida Schuchert and Cooper 1932
show all | hide all
Subor. †Orthidina Schuchert and Cooper 1932
hide
Superfm. †Plectorthoidea Schuchert and Le Vene 1929
hide
Fm. †Platystrophiidae Schuchert 1929
hide
G. †Acanthorthis Neuman 1976
G. †Ffynnonia Neuman and Bates 1978
G. †Mcewanella Foerste 1920
G. †Platystrophia King 1850
G. †Salacorthis Williams 1974
G. †Siljanostrophia Zuykov and Egerquist 2005