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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)
Lepidosauria
Squamata (Scaled reptiles)
Episquamata
Toxicofera
Ophidia
Serpentes (Snake)
Alethinophidia
Caenophidia (Caenophidian)
Colubroidea
Viperidae (The viper family)
Crotalinae (Pit adders)
Crotalus

Crotalus willardi (1517877)

English name: new mexican ridge-nosed rattlesnake

Children (5 direct children, 5 direct and indirect children):

Crotalus willardi obscurus

Crotalus willardi willardi

Western chihuahuan ridge-nosed rattlesnake

Del nido ridge-nosed rattlesnake

Southern ridge-nosed rattlesnake