Definitions for dimetrodon
daɪˈmɛ trəˌdɒndimetrodon

Princeton's WordNetRate this definition:0.0 / 0 votes

1. dimetrodonnoun

   carnivorous dinosaur of the Permian in North America having a crest or dorsal sail

WiktionaryRate this definition:0.0 / 0 votes

1. dimetrodonnoun

   A carnivorous synapsid, of the genus Dimetrodon, from the Permian period

WikipediaRate this definition:0.0 / 0 votes

1. Dimetrodon

   Dimetrodon ( (listen) or ,) meaning "two measures of teeth,” is an extinct genus of non-mammalian synapsid that lived during the Cisuralian (Early Permian), around 295–272 million years ago (Mya). It is a member of the family Sphenacodontidae. The most prominent feature of Dimetrodon is the large neural spine sail on its back formed by elongated spines extending from the vertebrae. It walked on four legs and had a tall, curved skull with large teeth of different sizes set along the jaws. Most fossils have been found in the Southwestern United States, the majority coming from a geological deposit called the Red Beds of Texas and Oklahoma. More recently, its fossils have been found in Germany. Over a dozen species have been named since the genus was first erected in 1878. Dimetrodon is often mistaken for a dinosaur or as a contemporary of dinosaurs in popular culture, but it became extinct some 40 million years before the first appearance of dinosaurs. Reptile-like in appearance and physiology, Dimetrodon is nevertheless more closely related to mammals than to modern reptiles, though it is not a direct ancestor of mammals. Dimetrodon is assigned to the "non-mammalian synapsids", a group traditionally – but incorrectly – called "mammal-like reptiles", and now known as stem mammals. This groups Dimetrodon together with mammals in a clade (evolutionary group) called Synapsida, while placing dinosaurs, reptiles, and birds in a separate clade, the Sauropsida. Single openings in the skull behind each eye, known as temporal fenestrae, and other skull features distinguish Dimetrodon and mammals from most of the earliest sauropsids. Dimetrodon was probably one of the apex predators of the Cisuralian ecosystems, feeding on fish and tetrapods, including reptiles and amphibians. Smaller Dimetrodon species may have had different ecological roles. The sail of Dimetrodon may have been used to stabilize its spine or to heat and cool its body as a form of thermoregulation. Some recent studies argue that the sail would have been ineffective at removing heat from the body due to large species being discovered with small sails and small species being discovered with large sails, essentially ruling out heat regulation as its main purpose. The sail was most likely used in courtship display with methods such as threatening rivals or showing off to potential mates.

ChatGPTRate this definition:0.0 / 0 votes

1. dimetrodon

   Dimetrodon is a prehistoric mammal-like reptile that lived during the early Permian period, around 295-272 million years ago. Its most distinctive feature is the large sail-like structure on its back. This creature, despite its resemblance to dinosaurs, is actually more closely related to mammals. Its name, Dimetrodon, means "two measures of teeth" due to its varying tooth sizes which were used for hunting. It was a carnivorous animal and could grow up to 4 meters long.

WikidataRate this definition:0.0 / 0 votes

1. Dimetrodon

   Dimetrodon is an extinct genus of synapsid that lived during the Early Permian, around 299–270 million years ago. It is a member of the family Sphenacodontidae. The most prominent feature of Dimetrodon is the large sail on its back formed by elongated spines extending from the vertebrae. It walked on four legs and had a tall, curved skull with large teeth of different sizes set along the jaws. Most fossils have been found in the southwestern United States, the majority coming from a geological deposit called the Red Beds in Texas and Oklahoma. More recently, fossils have been found in Germany. Over a dozen species have been named since the genus was first described in 1878. Dimetrodon is often mistaken as a dinosaur or as a contemporary of dinosaurs in popular culture, but it went extinct around 40 million years before the appearance of the first dinosaur in the Triassic period. Generally reptile-like in appearance and physiology, Dimetrodon is nevertheless more closely related to mammals than it is to any living reptilian group, though it is not a direct ancestor of any mammals. Dimetrodon belongs to a group traditionally called "mammal-like reptiles", more recently termed "stem-mammals" or "non-mammalian synapsids" because many vertebrate paleontologists today group Dimetrodon together with mammals in an evolutionary group or clade called Synapsida while dinosaurs go together with living reptiles and birds in a separate group, Sauropsida. A single large opening on either side of the back of the skull links Dimetrodon with mammals and distinguishes it from most of the earliest sauropsids, which either lack openings or have two openings. Features such as ridges on the inside of the nasal cavity and a ridge at the back of the lower jaw are thought to be part of an evolutionary progression from early tetrapods to mammals.

Matched Categories

1. • Synapsid Reptile

Usage in printed sourcesFrom: 

1. [["1929","8"],["1937","2"],["1953","1"],["1957","2"],["1958","2"],["1959","1"],["1960","1"],["1964","1"],["1965","2"],["1968","1"],["1970","3"],["1974","4"],["1975","5"],["1976","1"],["1977","8"],["1978","1"],["1979","2"],["1981","1"],["1982","2"],["1983","4"],["1984","11"],["1985","1"],["1986","4"],["1987","3"],["1988","22"],["1989","11"],["1990","4"],["1991","7"],["1992","44"],["1993","7"],["1994","1"],["1995","1"],["1996","4"],["1997","20"],["1998","5"],["1999","15"],["2000","9"],["2001","5"],["2002","53"],["2003","10"],["2004","21"],["2005","14"],["2006","6"],["2007","11"],["2008","26"]]

How to pronounce dimetrodon?

1. Alex

   US English

   David

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   Mark

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   Daniel

   British

   Libby

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   Mia

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   Karen

   Australian

   Hayley

   Australian

   Natasha

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   Indian

   Priya

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   Neerja

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   Zira

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   Wendy

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How to say dimetrodon in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of dimetrodon in Chaldean Numerology is: 7

2. Pythagorean Numerology

   The numerical value of dimetrodon in Pythagorean Numerology is: 9

References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=dimetrodon
2. ^ Wiktionary
   https://en.wiktionary.org/wiki/Dimetrodon
3. ^ Wikipedia
   https://en.wikipedia.org/wiki/Dimetrodon
4. ^ ChatGPT
   https://chat.openai.com
5. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=dimetrodon
6. ^ Usage in printed sources
   https://books.google.com/ngrams/graph?content=dimetrodon