The only difference between the trees is in the position of Stratiotes, which is placed either as sister to the remaining Hydrocharitaceae or embedded within the family.
In the MP analysis it is placed either as a basal ditrysian or in Yponomeutoidea, but never in the Tineoidea (Additional file 10).
Prostigmata were hypothesized to include three main groups: Labidostommatina Krantz, 1978 plus Eupodina Krantz, 1978, Anystina van der Hammen, 1972 and Eleutherengona Oudemans, 1909 [ 11, 13, 14], although Eupodina was placed either as sister group of Anystina [ 11] or as the basal lineage of the remaining Prostigmata [ 13].
Taking into account the red area in Fig. 1c so that the keys can be pressed through flexion, and considering the proposed 3-D key placements for upper and lower keys, the middle 3-D key should be placed either in the same position as on a standard keyboard or at the middle phalanx (the part of the finger between the DIP and PIP joints) (Fig. 5, center).
A disc could only be placed either on an empty peg, such as the middle when starting, or on top of a larger disc.
The cards can be placed either upright or sideways.
This is relevant since flatworm position in modern phylogeny is still debated, being placed either within or as sister group of the lophotrochozoa [ 34- 36].
Pycnogonids are placed either within the Chelicerata as sister taxon of the Euchelicerata or as sister taxon of all other Euarthropoda [ 31, 32].
Unsatisfactorily, they were placed either side of the stage.
Traditionally, fiducials have been placed either intraoperatively or percutaneously.
