Classification of Fortey 1990

Cl. †Trilobita Walch 1771 [trilobite]
show all
Subcl. †Libristoma Fortey 1990
hide
Or. †Asaphida Salter 1864
Or. †Proetida Fortey and Owens 1975
Or. †Ptychopariida Swinnerton 1915
hide
Subor. †Harpina
Subor. †Olenina Hupe 1952
Subor. †Ptychopariina Richter 1933