The taxa and collection information have been listed in Additional file 1 For each of the 93 specimens newly sequenced for matR, fresh leaves were frozen or dried in silica gel [ 54].
However, the great majority (70%) of available species phylogenies for Neotropical freshwater teleosts employ comparative morphology alone, partly because species-level sampling for most taxa requires collections over large spatial (103 104 km) scales, and collections of whole specimens for morphological study are readily available for many taxa from natural history museums.
While full genome sequences are still only available for a handful of taxa, large collections of partial gene sequences are available for many more.
Many more samples exist in museum collections, but the majority of these samples originate from directed collections of individual species or taxa, rather than collections that examine the composition of the entire community.
Post-practical, it is worthwhile recording the names given by the class to the different nodes, as an exploration of the group decisions about naming taxa by a collection of individuals naïve to standard taxonomic practices may give us interesting insights into potential student understanding and confusion about taxonomy.
This database is made up of over 100 contributing databases which cover a range of taxa and sample collection methods.
Among other taxa, the extensive collection of hystricognathous rodents from L-41 includes numerous specimens of the genus Gaudeamus, including not only mandibles and maxillae, but also nearly complete crania.
Additional collections and analyses since previous reports [ 7, 8] has resulted in 23 additional taxa being collected from the Churchill area.
The great majority of taxa have germplasm collections covering a geographic range considerably smaller than the potential geographic area in which the taxon is distributed (Figure 4), thus indicating the need for further collecting in order to fill geographic gaps.
Unlike groupings such as birds or mammals, fish are not a single clade but a paraphyletic collection of taxa, including hagfishes, lampreys, sharks and rays, ray-finned fish, coelacanths, and lungfish.
