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Table 1 Characterising the earliest splits in the maximum likelihood phylogeny of Nematoda

From: Moving towards a complete molecular framework of the Nematoda: a focus on the Enoplida and early-branching clades

Nematode Taxa and Treatment Outgroup Additional Non-nematode Phyla Earliest Splitting Clade Bootstrap Support for Earliest Split
All Taxa Priapulida+Kinorhyncha Tadigrada, Nematomorpha Enoplia 19%
All Taxa Kinorhyncha (none) Dorylaimia* 41%
All Taxa Nematomorpha (none) Dorylaimia* 75%
All Taxa Priapulida (none) Dorylaimia* 45%
All Taxa Tardigrada (none) Dorylaimia* 49%
All Taxa (No P-invar estimate) Priapulida+Kinorhyncha Tardigrada, Nematomorpha Enoplia 19%
All Taxa (No P-invar estimate) Kinorhyncha (none) Enoplia 34%
All Taxa (No P-invar estimate) Priapulida (none) Enoplia 29%
All Taxa (No P-invar estimate) Nematomorpha (none) Dorylaimia* 76%
All Taxa (No P-invar estimate) Tardigrada (none) Doryla+Enop 20%
All Taxa (No P-invar estimate) Tardigrada Nematomorpha Dorylaimia* 60%
All Taxa (No P-invar estimate) Kinorhyncha Nematomorpha Enoplia 21%
All Taxa (No P-invar estimate) Priapulida Nematomorpha Doryla+Enop* 39%
All Taxa (No P-invar estimate) Kinorhyncha Tardigrada Enoplia 24%
All Taxa (No P-invar estimate) Priapulida Tardigrada Doryla+Enop* 55%
All Taxa (No P-invar estimate) Kinorhyncha+Priapulida (none) Doryla+Enop* 47%
All Taxa Kinorhyncha+Priapulida Tardigrada Doryla+Enop* 61%
All Taxa Kinorhyncha+Priapulida Nematomorpha Enoplia 32%
All Taxa Priapulida Tardigrada, Nematomoprha Enoplia 19%
All Taxa Kinorhyncha Tardigrada, Nematomoprha Enoplia 30%
All Taxa, Gblocks alignment Priapulida+Kinorhyncha Tardigrada, Nematomorpha Dorylaimia 35%
All Taxa, Gblocks alignment Nematomorpha (none) Dorylaimia* 71%
Trichinellida Removed Priapulida+Kinorhyncha Tardigrada, Nematomorpha Doryla+Enop 48%
Trichinellida Removed Kinorhyncha (none) Enoplia 57%
Trichinellida Removed Nematomorpha (none) Dorylaimia 76%
Trichinellida Removed Priapulida (none) Enoplia 54%
Trichinellida Removed Tardigrada (none) Doryla+Enop 53%
Long Branch, Outlier taxa removed Priapulida+Kinorhyncha Tardigrada, Nematomorpha Enoplia 25%
Long Branch, Outlier taxa removed Nematomorpha (none) Dorylaimia* 69%
  1. Basal split recovered using different combinations of nematode taxa, outgroup taxa, and phylogenetic parameters; all topologies utilized stem/loop gene partitions according to rRNA secondary structure. "Earliest splitting clade" identifies the group that diverges most basally from all other nematodes. "Doryla+Enop" indicates the Dorylaimia and Enoplia as a monophyletic group. Outgroup taxa were chosen according to the phylogeny of animal phyla by Dunn et al. (2008). Asterisk (*) denotes topologies where the Trichnellida and Dorylaimida are recovered as paraphyletic, with Trichnellida splitting first in all cases.