Classification of Alexander 1934

Fm. Cytheridae Baird 1850
show all | hide all
G. †Brachycythere Alexander 1933
+
†Brachycythere foraminosa Alexander 1934
†Brachycythere formosa Alexander 1934
†Brachycythere interrasilis Alexander 1934
†Brachycythere plena Alexander 1934
G. Cythereis Jones 1849
+
†Cythereis cancellosa Alexander 1934
†Cythereis midwayensis Alexander 1934
†Cythereis sculptilis Alexander 1934
G. Cytheridea Bosquet 1852
+
†Cytheridea fornicata Alexander 1934
†Cytheridea multipunctata Alexander 1934
†Cytheridea ruginosa Alexander 1934
†Cytheridea ruida Alexander 1934
G. Cytheromorpha Hirschmann 1909
+
†Cytheromorpha scrobiculata Alexander 1934
G. Cytheropteron Sars 1866
G. Eucythere Brady 1868
+
†Eucythere midwayensis Alexander 1934
G. Krithe Brady et al. 1874
+
†Krithe perattica Alexander 1934
G. Loxoconcha Sars 1866
+
†Loxoconcha corrugata Alexander 1934
†Loxoconcha nuda Alexander 1934
†Loxoconcha perdecora Alexander 1934
†Loxoconcha prava Alexander 1934
G. †Monoceratina Roth 1928
+
†Monoceratina rossae Alexander 1934
†Monoceratina speciosa Alexander 1934
G. Xestoleberis Sars 1866
+
†Xestoleberis truncata Alexander 1934
Fm. Cytherellidae Sars 1866
show all | hide all
G. Cytherella Jones 1849
hide
†Cytherella excavata Alexander 1934
†Cytherella symmetrica Alexander 1934
†Cytherella tumidosa Alexander 1934
†Cytherella turgidula Alexander 1934
show all | hide all
Fm. Cypridae Baird 1846
show all | hide all
hide
†Argilloecia faba Alexander 1934
†Argilloecia subcylindrica Alexander 1934
G. Paracypris Sars 1866
hide
†Paracypris perapiculata Alexander 1934
show all | hide all
Fm. †Bairdidae McCoy 1844
show all | hide all
G. Bairdia M'Coy 1844
hide
†Bairdia suborbiculata Alexander 1934