Nephrozoa

Nephrozoa
Temporal range: Ediacaran - Present, 558–0 Ma
EchinodermChordataEcdysozoaHemichordataLophotrochozoaPlatyzoa
Scientific classification
Domain: Eukaryota
Kingdom: Animalia
Subkingdom: Eumetazoa
Clade: ParaHoxozoa
Clade: Bilateria
Clade: Nephrozoa
Jondelius et al., 2002
Subdivisions
Synonyms

Eubilateria Ax, 1987

Nephrozoa is a proposed major clade of bilaterian animals. It includes all bilaterians other than Xenacoelomorpha. It contrasts with the Xenambulacraria hypothesis, which instead posits that Xenocoelomorpha is nested within Bilateria as most closely related to Ambulacraria. Which hypothesis is correct is controversial. Authors supporting the Xenambulacraria hypothesis have suggested that the genetic evidence used to support Nephrozoa may be due to systematic error.

Below is a proposed phylogenetic tree of Nephrozoa:

Bilateria

Xenacoelomorpha

Nephrozoa
Deuterostomia

Chordata

540 mya
Ambulacraria

Echinodermata

Hemichordata

Protostomia

Ecdysozoa

Spiralia

610 mya
650 mya

This page was last updated at 2024-03-17 08:07 UTC. Update now. View original page.

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