Classification of Johnson 1970
Or. †Orthida Schuchert and Cooper 1932
show all | hide all
G. †Cortezorthis Johnson and Talent 1967
show all | hide all
†Cortezorthis cortezensis Johnson and Talent 1967
G. †Levenea Schuchert and Cooper 1931
show all | hide all
†Levenea fagerholmi Johnson 1970
†Levenea navicula Johnson 1970
G. †Schizophoria King 1850
show all | hide all
†Schizophoria nevadaensis Merriam 1940
†Schizophoria parafragilis Johnson 1970
G. †Leptostrophia Hall and Clarke 1892
show all | hide all
†Leptostrophia beckii Hall 1857
†Leptostrophia inequicostella Johnson 1970
G. †Megastrophia Caster 1939
show all | hide all
†Megastrophia iddingsi Merriam 1940
†Megastrophia transitans Johnson 1970
G. †Strophonella Hall 1879
show all | hide all
†Strophonella bohemica Barrande 1848
†Strophonella punctulifera Conrad 1838
G. †Gypidula Hall 1867
show all | hide all
†Gypidula loweryi Merriam 1940
†Gypidula praeloweryi Johnson 1970
†Gypidula pseudogaleata Hall 1857
G. †Sieberella Oehlert 1887
show all | hide all
†Sieberella problematica Barrande 1847
†Sieberella pyriforma Johnson 1970
G. †Acrospirifer Wedekind 1926
show all | hide all
†Acrospirifer kobehana Merriam 1940
†Acrospirifer murchisoni Castelneau 1843
G. †Stropheodonta Hall 1852
show all | hide all
†Stropheodonta filicosta Johnson 1970
†Stropheodonta magnacosta Johnson 1970
G. †Megakozlowskiella Boucot 1957
show all | hide all
†Megakozlowskiella magnapleura Johnson 1970
†Megakozlowskiella raricosta Conrad 1842
Subfm. †Schuchertellinae Williams 1953
show all | hide all
Fm. †Retziidae Waagen 1883
show all | hide all
Subfm. †Delthyridinae Phillips 1841
show all | hide all
Fm. †Leptocoeliidae Boucot and Gill 1956
show all | hide all
G. †Leptocoelina Johnson 1970
hide
†Leptocoelina acutiplicata Conrad 1841
†Leptocoelina squamosa Johnson 1970