Recently it has been suggested that Cetacea originated within Artiodactyla, but the relationships among the different artiodactyl lineages and Cetacea have not been conclusively established. These sequences have been used in phylogenetic analyses together with those of two baleen whales, two ruminants and several other eutherian mammals. However, the order in which these lineages diverged was not conclusively resolved. Germany p. 34. In order to analyse in further detail the relationships among artiodactyls as well as the relationships between artiodactyls and cetaceans, efforts have been made to sequence the complete mtDNA molecules of some relevant artiodactyl taxa including Suidae.
Whales are extremely derived mammals.
They evolved from land living to fully aquatic living mammals in less than 50 million years. The concatenated nucleotide and amino acid sequences of 12 protein coding genes of hippopotamus and a number of other mammals were included in a phylogenetic study. This analysis confirmed a previous suggested close relationship between hippopotamuses and whales. Back to homepage Phylogeny of nematode-trapping fungi based on 18S rDNA sequences. Phylogenetic analysis indicated that species within the genera of Arthrobotrys , Dactylaria , Dactylella , Monacrosporium and Duddingtonia formed a monophyletic and isolated clade among an unresolved cluster of apothecial ascomycetes.