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Biota (Life)
Eukaryote (Eukarya)
Podiata
Unikont (Unikonta)
Opisthokont (Opisthokonta)
Holozoa
Filozoa
Apoikozoa (Choanozoa)
Animal (Animalia)
Metazoa
Epitheliozoa
Eumetazoa
Bilateria
Deuterostome (Deuterostomia)
Chordata (Chordates)
Olfactores
Craniata (Craniata (chordata))
Vertebrata (Animals with backbone)
Gnathostomata (Gnathostome)
Eugnathostomata
Teleostomi
Euteleostomi
Sarcopterygii (Lobe-finned fishes)
Dipnotetrapodomorpha
Tetrapodomorpha (Tetrapodomorph)
Tetrapoda (Tetrapod)
Reptiliomorpha
Amniota (Amniote)
Sauropsida
Reptilia (Reptiles)
Eureptilia
Romeriida
Diapsid (Diapsida)
Neodiapsida
Sauria
Lepidosauromorpha (Lepidosauromorph)
Sauropterygia (Lizard flippers)
Plesiosauria (Plesiosaur)

Elasmosauridae (134303)

Children (36 direct children, 80 direct and indirect children):

Elasmosaurus (tree size 1)

Futabasaurus (tree size 1)

Albertonectes (tree size 1)

Fresnosaurus

Thalassomedon

Styxosaurus (tree size 1)

Callawayasaurus (tree size 1)

Mauisaurus (tree size 2)

Libonectes (tree size 1)

Wapuskanectes

Alexeyisaurus

Terminonatator

Hydralmosaurus (tree size 1)

Aphrosaurus (tree size 1)

Aristonectinae

Cimoliasaurus (tree size 21)

Eromangasaurus (tree size 2)

Morenosaurus (tree size 1)

Ogmodirus

Tuarangisaurus (tree size 1)

Hydrotherosaurus (tree size 1)

Zarafasaura (tree size 1)

Cardiocorax (tree size 1)

Vegasaurus (tree size 1)

Alzadasaurinae (tree size 1)

Piptomerus

Kawanectes (tree size 1)

Woolungasaurus (tree size 1)

Elasmosaurinae

Lagenanectes
Lagenanectes richterae

Nakonanectes (tree size 1)

Alexandronectes

Leivanectes

Jucha (tree size 1)

Wunyelfia

Fluvionectes