Lauroppia
(tree size 40)
Congoppia
(tree size 2)
Paroppia
(tree size 4)
Brachioppiella
(tree size 28)
Medioxyoppia
(tree size 6)
Acroppia
(tree size 6)
Pletzenoppia
(tree size 3)
Mimoppia
(tree size 3)
Globoppia
(tree size 16)
Quinquoppia
(tree size 2)
Drepanoppia
(tree size 2)
Pulchroppiella
(tree size 3)
Belloppia
(tree size 4)
Dissorhina
(tree size 12)
Discoppia
(tree size 7)
Oxybrachioppia
(tree size 3)
Ramonoppia
(tree size 2)
Ctenoppia
(tree size 2)
Lineoppia
(tree size 2)
Oppiella
(tree size 20)
Rhinoppia
(tree size 26)
Neoamerioppia
(tree size 42)
Separatoppia
(tree size 4)
Polyoppia
(tree size 2)
Geminoppia
(tree size 3)
Karenella
(tree size 11)
Fossoppia
(tree size 2)
Taiwanoppia
(tree size 10)
Lasiobelba
(tree size 37)
Acutoppia
(tree size 2)
Setoppia
(tree size 17)
Similoppia
(tree size 2)
Ramusella
(tree size 87)
Heteroppia
(tree size 4)
Processoppia
(tree size 3)
Pseudoamerioppia
(tree size 9)
Lanceoppia
(tree size 60)
Anomaloppia
(tree size 9)
Brassoppia
(tree size 3)
Corynoppia
(tree size 9)
Neotrichoppia
(tree size 11)
Oppia
(tree size 67)
Cycloppia
(tree size 4)
Baloghoppia
(tree size 2)
Multioppia
(tree size 51)
Fusuloppia
(tree size 2)
Brachioppia
(tree size 10)
Gittella
(tree size 4)
Arcoppia
(tree size 61)
Striatoppia
(tree size 21)
Tectoppia
(tree size 3)
Cryptoppia
(tree size 3)
Joboppia
(tree size 2)
Wallworkoppia
(tree size 5)
Sphagnoppia
(tree size 2)
Tripiloppia
(tree size 6)
Pulchroppia
(tree size 7)
Oxyoppia
(tree size 29)
Multipulchroppia
(tree size 8)
Uroppia
(tree size 2)
Ptiloppia
(tree size 2)
Otoppia
(tree size 2)
Microppia
(tree size 6)
Condyloppia
(tree size 2)
Chavinia
(tree size 2)
Cheloppia
(tree size 2)
Serratoppia
(tree size 7)
Foraminoppia
(tree size 2)
Leptoppia
(tree size 2)
Moritzoppia
(tree size 39)
Kokoppia
(tree size 7)
Solenoppia
(tree size 7)
Rugoppia
(tree size 5)
Goyoppia
(tree size 3)
Graptoppia
(tree size 19)
Basidoppia
(tree size 6)
Tuberoppia
(tree size 2)
Amerioppia
(tree size 9)
Mystroppia
(tree size 3)
Neoppia
(tree size 6)
Austroppia
(tree size 2)
Hypogeoppia
(tree size 11)
Trapezoppia
(tree size 2)
Aethioppia
(tree size 3)
Berniniella
(tree size 38)
Aeroppia
(tree size 13)
Elaphoppia
(tree size 3)
Membranoppia
(tree size 16)
Medioppia
(tree size 23)
Autoppia
(tree size 1)
Basiloppia
(tree size 1)
Convergoppia
(tree size 1)
Erioppia
(tree size 1)
Exanthoppia
(tree size 1)
Foveolatoppia
(tree size 1)
Hamoppia
(tree size 1)
Helioppia
(tree size 1)
Kulievia
(tree size 1)
Laminoppia
(tree size 1)
Lemuroppia
(tree size 1)
Liacaroppia
(tree size 1)
Mahunkella
(tree size 1)
Multimedioppia
(tree size 1)
Octoppia
(tree size 1)
Oligoppia
(tree size 1)
Operculoppia
(tree size 1)
Oxyoppioides
(tree size 2)
Paramedioppia
(tree size 1)
Pararamusella
(tree size 1)
Paternoppia
(tree size 4)
Porrhoppia
(tree size 1)
Pseudobrachioppiella
(tree size 1)
Stachyoppia
(tree size 1)
Tanzoppia
(tree size 1)
Xenoppia
(tree size 1)
Abchasiella
(tree size 1)
Cubaoppia
(tree size 1)
Intermedioppia
(tree size 1)
Javieroppia
(tree size 1)
Laroppia
(tree size 1)
Loboppia
(tree size 1)
Miroppia
(tree size 1)
Neostrinatina
(tree size 1)
Niloppia
(tree size 1)
Pluritrichoppia
(tree size 1)
Pustuloppia
(tree size 1)
Ramuloppia
(tree size 1)
Ramuselloppia
(tree size 1)
Rhaphoppia
(tree size 1)
Sacculoppia
(tree size 1)
Setuloppia
(tree size 1)
Trematoppia
(tree size 1)
Varioppia
(tree size 1)
Oppiellinae
Oppiinae
Oxyoppiinae
(tree size 20)
Decoroppiinae
(tree size 2)
Antilloppiinae
Lanceoppiinae
Arcoppiinae
Paternoppiinae
Tetroppia
Medioppiinae
Brachiopiella
Brachioppiinae
Gigantoppia
Multioppiinae
Mystroppiinae
Chaviniinae
Pulchroppiinae
Alcyoppia
(tree size 1)
Insculptoppia
(tree size 2)
Teratopia
(tree size 1)
Ctenoppiella
(tree size 1)
Furculoppia
(tree size 1)
Minoricoppia
(tree size 1)
Neoameroppia
(tree size 1)
Oxybrachyoppia
(tree size 1)