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Biota (Life)
Eukaryote (Eukarya)
Podiata
Unikont (Unikonta)
Opisthokont (Opisthokonta)
Holozoa
Filozoa
Apoikozoa (Choanozoa)
Animal (Animalia)
Metazoa
Epitheliozoa
Eumetazoa
Bilateria
Nephrozoa (Eubilateria)
Protostome (Protostomia)
Ecdysozoa (Ecdysozoan)
Cycloneuralia
Nematoida (Nematoidea)
Nematoda (Roundworm)
Secernentea
Spiruria (Spiuria)
Spirurida
Tetrameridae

Crassicauda (18596658)

Children (13 direct children, 13 direct and indirect children):

Crassicauda anthonyi

Crassicauda bennetti

Crassicauda boopis

Crassicauda carbonelli

Crassicauda crassicauda

Crassicauda giliakiana

Crassicauda grampicola

Crassicauda magna

Crassicauda duguyi

Crassicauda delamureana

Crassicauda tortilis

Crassicauda fuelleborni

Crassicauda costata