perissodactyla उदाहरण वाक्य
उदाहरण वाक्य
- Proboscidea and Sirenia are linked together based on auditory characters in their petrosal bones, but this link may be a homoplasy . ( The Early Eocene family Anthracobunidae has been considered to be a sister group of Tethytheria, but has more recently been assigned to Perissodactyla .)
- Advocates of this newer system redefine Ferungulata as a clade within Laurasiatheria, comprising the larger portion of the former Ferungulata and including'true'ungulates ( Perissodactyla and Artiodactyla ), whales and Carnivora, with the addition of pangolins ( Pholidota ), but excluding Tubulidentata and paenungulates.
- A 2007 study by Mendoza and Palmqvist compared the habitats and diets of 134 species of living ungulates, for which this data is known, both Artiodactyla and Perissodactyla, against " 32 craniodental measurements " to discover what correlations exist for the group studied and to test hypotheses concerning hypsodonty and mode of life.
- Desmostylia, together with Sirenia and Proboscidea ( and possibly Embrithopoda ), have traditionally been assigned to the afrotherian clade Tethytheria, a group named after the paleoocean 2014 cladistic analysis that places anthracobunids and desmostylians, two major groups of putative non-African afrotheres, close to each other within the laurasiatherian order Perissodactyla.
- This arrangement closely resembles the crown pattern of early perissodactyls, but the strong conules ( cusps ) and some other characters suggest relationship to phenacolophids " and added that " " Radinskya " may be the sister taxon of all other Altungulata or may be closer to the origin of Perissodactyla than is any phenacodontid ."
- To the surprise of the authors, their data led them to propose a clade that includes bats ( order Chiroptera ), carnivores such as cats and dogs ( order Carnivora ), horses and other odd-toed ungulates ( order Perissodactyla ) and pangolins ( order Pholidota ) as springing from a single evolutionary origin within the mammals.
- The exact position of Perissodactyla remains less certain, with some studies linking it with Ferae into a proposed clade Zooamata while others unite it with Cetartiodactyla into Euungulata, a clade of'true ungulates'; Zhou et al . found better ( but not full ) support for the latter, while Nery et al . found Perissodactyla to be sister to Carnivora.
- The exact position of Perissodactyla remains less certain, with some studies linking it with Ferae into a proposed clade Zooamata while others unite it with Cetartiodactyla into Euungulata, a clade of'true ungulates'; Zhou et al . found better ( but not full ) support for the latter, while Nery et al . found Perissodactyla to be sister to Carnivora.
- In 1884, Othniel Charles Marsh ( 1831 1899 ) came up with the concept " Mesaxonia ", which he used for what are today called the odd-toed ungulates, including their extinct relatives, but explicitly excluding the hyrax . " Mesaxonia " is now considered a synonym of " Perissodactyla ", but it was sometimes also used for the true odd-toed ungulates as a subcategory ( rhinos, horses, tapirs ), while " Perissodactyla " stood for the entire order, including the hyrax.
- In 1884, Othniel Charles Marsh ( 1831 1899 ) came up with the concept " Mesaxonia ", which he used for what are today called the odd-toed ungulates, including their extinct relatives, but explicitly excluding the hyrax . " Mesaxonia " is now considered a synonym of " Perissodactyla ", but it was sometimes also used for the true odd-toed ungulates as a subcategory ( rhinos, horses, tapirs ), while " Perissodactyla " stood for the entire order, including the hyrax.