The phylogeny of desmostylians revisited: proposal of new clades based on robust phylogenetic hypotheses
Background Desmostylia is a clade of extinct aquatic mammals with no living members. Today, this clade is considered belonging to either Afrotheria or Perissodactyla. In the currently-accepted taxonomic scheme, Desmostylia includes two families, 10 to 12 genera, and 13–14 species. There have been re...
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| Format: | Article |
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PeerJ Inc.
2019-10-01
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| Online Access: | https://peerj.com/articles/7430.pdf |
| _version_ | 1797419227515191296 |
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| author | Kumiko Matsui Takanobu Tsuihiji |
| author_facet | Kumiko Matsui Takanobu Tsuihiji |
| author_sort | Kumiko Matsui |
| collection | DOAJ |
| description | Background Desmostylia is a clade of extinct aquatic mammals with no living members. Today, this clade is considered belonging to either Afrotheria or Perissodactyla. In the currently-accepted taxonomic scheme, Desmostylia includes two families, 10 to 12 genera, and 13–14 species. There have been relatively few phylogenetic analyses published on desmostylian interrelationship compared to other vertebrate taxa, and two main, alternative phylogenetic hypotheses have been proposed in previous studies. One major problem with those previous studies is that the numbers of characters and OTUs were small. Methods In this study, we analyzed the phylogenetic interrelationship of Desmostylia based on a new data matrix that includes larger numbers of characters and taxa than in any previous studies. The new data matrix was compiled mainly based on data matrices of previous studies and included three outgroups and 13 desmostylian ingroup taxa. Analyses were carried out using five kinds of parsimonious methods. Results Strict consensus trees of the most parsimonious topologies obtained in all analyses supported the monophyly of Desmostylidae and paraphyly of traditional Paleoparadoxiidae. Based on these results, we propose phylogenetic definitions of the clades Desmostylidae and Paleoparadoxiidae based on common ancestry. |
| first_indexed | 2024-03-09T06:45:21Z |
| format | Article |
| id | doaj.art-7c48f1b863da4570af431edf106de46f |
| institution | Directory Open Access Journal |
| issn | 2167-8359 |
| language | English |
| last_indexed | 2024-03-09T06:45:21Z |
| publishDate | 2019-10-01 |
| publisher | PeerJ Inc. |
| record_format | Article |
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| spelling | doaj.art-7c48f1b863da4570af431edf106de46f2023-12-03T10:37:35ZengPeerJ Inc.PeerJ2167-83592019-10-017e743010.7717/peerj.7430The phylogeny of desmostylians revisited: proposal of new clades based on robust phylogenetic hypothesesKumiko Matsui0Takanobu Tsuihiji1The Kyushu University Museum, Kyushu University, Fukuoka, JapanDepartment of Earth and Planetary Science, Graduate school of Science, The University of Tokyo, Tokyo, JapanBackground Desmostylia is a clade of extinct aquatic mammals with no living members. Today, this clade is considered belonging to either Afrotheria or Perissodactyla. In the currently-accepted taxonomic scheme, Desmostylia includes two families, 10 to 12 genera, and 13–14 species. There have been relatively few phylogenetic analyses published on desmostylian interrelationship compared to other vertebrate taxa, and two main, alternative phylogenetic hypotheses have been proposed in previous studies. One major problem with those previous studies is that the numbers of characters and OTUs were small. Methods In this study, we analyzed the phylogenetic interrelationship of Desmostylia based on a new data matrix that includes larger numbers of characters and taxa than in any previous studies. The new data matrix was compiled mainly based on data matrices of previous studies and included three outgroups and 13 desmostylian ingroup taxa. Analyses were carried out using five kinds of parsimonious methods. Results Strict consensus trees of the most parsimonious topologies obtained in all analyses supported the monophyly of Desmostylidae and paraphyly of traditional Paleoparadoxiidae. Based on these results, we propose phylogenetic definitions of the clades Desmostylidae and Paleoparadoxiidae based on common ancestry.https://peerj.com/articles/7430.pdfDesmostyliaPhylogenyDesmostylidaePaleoparadoxiidae |
| spellingShingle | Kumiko Matsui Takanobu Tsuihiji The phylogeny of desmostylians revisited: proposal of new clades based on robust phylogenetic hypotheses PeerJ Desmostylia Phylogeny Desmostylidae Paleoparadoxiidae |
| title | The phylogeny of desmostylians revisited: proposal of new clades based on robust phylogenetic hypotheses |
| title_full | The phylogeny of desmostylians revisited: proposal of new clades based on robust phylogenetic hypotheses |
| title_fullStr | The phylogeny of desmostylians revisited: proposal of new clades based on robust phylogenetic hypotheses |
| title_full_unstemmed | The phylogeny of desmostylians revisited: proposal of new clades based on robust phylogenetic hypotheses |
| title_short | The phylogeny of desmostylians revisited: proposal of new clades based on robust phylogenetic hypotheses |
| title_sort | phylogeny of desmostylians revisited proposal of new clades based on robust phylogenetic hypotheses |
| topic | Desmostylia Phylogeny Desmostylidae Paleoparadoxiidae |
| url | https://peerj.com/articles/7430.pdf |
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