Table 2

Sensitivity of afrotherian interordinal phylogeny to alternative placements of the placental root, taxon deletion, and taxon addition

Hypothesis

Afrotherian interordinal phylogeny


Exafroplacentalia

OS

(Macroscelidea, (Afrosoricida, (Tubulidentata, (Proboscidea, (Hyracoidea, Sirenia)))))

U

(Macroscelidea, (Afrosoricida, (Tubulidentata, (Hyracoidea, (Proboscidea, Sirenia)))))*

Atlantogenata

OS

((Tubulidentata, (Macroscelidea, Afrosoricida)), (Proboscidea, (Hyracoidea, Sirenia)))

U

no change

Deleted taxon

Arsinoitherium

OS

(Afrosoricida, ((Macroscelidea, Tubulidentata), (Sirenia, (Hyracoidea, Proboscidea))))

U

(Afrosoricida, ((Macroscelidea, Tubulidentata), (Sirenia, (Hyracoidea, Proboscidea))))

Chambius

OS

no change

U

no change

Herodotius

OS

no change

U

no change*

Microhyrax

OS

no change

U

no change

Phosphatherium

OS

no change

U

no change

Prorastomus

OS

no change

U

no change*

Seggeurius

OS

no change

U

no change

Added taxon

Sister taxon

Afrotherian interordinal phylogeny

Kelba

OS

Tubulidentata

no change

U

Tubulidentata

no change

Widanelfarasia

OS

within Tenrecoidea

no change

U

within Tenrecoidea

no change

Kelba +

Widanelfarasia

OS

no change

no change

U

no change

no change


Interordinal relationships within Afrotheria from (above) analyses constrained to agree with the alternative hypotheses Exafroplacentalia (Afrotheria, (Boreoeutheria, Xenarthra)) and Atlantogenata (Boreoeutheria, (Afrotheria, Xenarthra)), and (below) analyses run following deletion or addition of various extinct taxa. Results followed by an asterisk are those that occur in the Adams consensus of all equally parsimonious trees (the strict consensus of which was less resolved than the optimal topologies based on analyses including all taxa). OS = ordered and scaled analysis; U = unordered analysis.

Seiffert BMC Evolutionary Biology 2007 7:224   doi:10.1186/1471-2148-7-224

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