Phylogenies without roots? A plea for the use of vouchers in molecular phylogenetic studies.
Pleijel
F
F
Department of Marine Ecology, Tjärnö Marine Biological Laboratory, Göteborg University, SE-452 96 Strömstad, Sweden. fredrik.pleijel@marecol.gu.se
Jondelius
U
U
Norlinder
E
E
Nygren
A
A
Oxelman
B
B
Schander
C
C
Sundberg
P
P
Thollesson
M
M
D000818:Animals; D002965:Classification / Q000379:methods*; D030561:Databases, Nucleic Acid / Q000592:standards*; D008969:Molecular Sequence Data; D010802:Phylogeny; D010944:Plants / Q000145:classification / Q000235:genetics