Children (71 direct children, 3543 direct and indirect children):
Tropitidae
(tree size 125)
Ceratitaceae
(tree size 469)
Ceratitoidea
Clydonitaceae
(tree size 125)
Danubitaceae
(tree size 113)
Danubitoidea
Dzhulfitidae
(tree size 20)
Noritaceae
(tree size 124)
Otoceratina
(tree size 143)
Paraceltitina
(tree size 273)
Pinacocerataceae
(tree size 42)
Pinacoceratoidea
Ptychitaceae
(tree size 65)
Ptychitoidea
Trachyceratidae
(tree size 183)
Tropitaceae
(tree size 220)
Xenodiscidae
(tree size 60)
Meekoceritidae
(tree size 5)
Meekoceratidae
Megaphyllitaceae
(tree size 35)
Megaphyllitoidea
Beneckeiidae
(tree size 1)
Arcestidae
(tree size 109)
Danubitidae
(tree size 40)
Cladiscitidae
(tree size 61)
Hedenstroemiidae
(tree size 45)
Beyrichitidae
(tree size 104)
Flemingites
(tree size 22)
Prionitidae
(tree size 65)
Arctoceratidae
(tree size 36)
Balatonitidae
(tree size 43)
Dinaritidae
(tree size 29)
Thisbitidae
(tree size 24)
Megaphyllitidae
(tree size 22)
Klamathitidae
(tree size 9)
Xenodiscoidea
(tree size 55)
Sageceratoidea
(tree size 23)
Meekoceratoidea
(tree size 414)
Dinaritoidea
(tree size 116)
Dinaritaceae
Trachycerataceae
(tree size 116)
Arcestaceae
(tree size 27)
Nathorstitaceae
(tree size 47)
Choristocerataceae
(tree size 41)
Lobitaceae
(tree size 4)
Ceratitiaceae
Ceratitoidea
Otocerina
Meekocerina
Ptychitina
Sagecerina
Megaphyllitina
Lobitina
Pinacocerina
Arcestina
Paranoritidae
Tozerites
(tree size 3)
Procurvoceratites
(tree size 3)
Jeanbesseiceras
(tree size 1)
Paraganides
(tree size 1)
Eschericeratites
(tree size 1)
Multisulcites
(tree size 1)
Courtilloticeras
(tree size 1)
Proavites
(tree size 3)
Tapponnierites
(tree size 1)
Larenites
(tree size 1)
Megaceratites
(tree size 1)
Welterites
Obrutchevites
Haidingerites
Stolleites
Paraacrochordiceras
Poporites
Orestites
Paratibites
Coeloceltites
Ceratitoidea
Trachyceratoidea
Carteria