Premium
Problems Determining the Phylogenetic Position of Echiurans and Pogonophorans with Limited Data
Author(s) -
Siddall Mark E,
Fitzhugh Kirk,
Coates Kathryn A
Publication year - 1998
Publication title -
cladistics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.323
H-Index - 92
eISSN - 1096-0031
pISSN - 0748-3007
DOI - 10.1111/j.1096-0031.1998.tb00347.x
Subject(s) - systematics , phylogenetic tree , biology , taxon , weighting , zoology , evolutionary biology , taxonomy (biology) , ecology , genetics , medicine , radiology , gene
The phylogenetic position of Echiura and Pogonophora was recently reconsidered using 346 bp of elongation factor 1‐alpha (EF‐1α). On the basis of these results alone it was suggested that the relationships of Anne lida be reconsidered and that the systematics of the group changed accordingly. An examination of these data, however, reveals difficulties in the original analysis that relate to weighting and the relative inclusion or exclusion of available characters and of taxa. Wholesale revision of the systematics of Annelida or of groups therein awaits the availability of more comprehensive work.