Definition of therapsid in English:

therapsid

noun θɛˈrapsɪdTHəˈrapsid

A fossil reptile of a Permian and Triassic order, the members of which are related to the ancestors of mammals.
Order Therapsida, subclass Synapsida: many families and numerous genera, including the cynodonts
Example sentencesExamples
- This pattern was retained in early therapsids.
- Consequently, lung ventilation rates and, by extension, metabolic rates of the earliest mammals, and at least some Triassic Period therapsids, are likely to have approached or been equal to those of extant mammals.
- The first fossil reptiles from the Karoo were found in the 1850s by Andrew Geddes Bain and were the first specimens of a new group of ‘reptiles’ called the therapsids, which were recognized as being the distant ancestors of mammals.
- The therapsids of this time belonged to several distinct (albeit related) lineages, none with clear antecedents.
- It is even seen in a group of therapsids (ancestors of mammals), the tritylodonts, which lived during the Jurassic.
- On land amphibians and therapsids (mammal-like reptiles) were both badly affected, while vascular plant diversity dropped by 50 per cent.
- Whether or not his reconstruction corresponds to an actual creature, it at least represents a good morphotype for slightly more derived, but still primitive, therapsids from the Late Permian.
- Pelycosaurs and therapsids are two different orders of reptiles.
- During the late Permian the dinocephalians suddenly disappeared (possibly due to disease or changing environmental factors), and were replaced by a further wave of more mammalian therapsids.
- However, he was the first to spot the connection between the early therapsids and the mammals.
- This gap is all the more extreme because pelycosaurs and therapsids are each large, internally-diverse groups.
- Biarmosuchians are a group of small-to-medium sized carnivorous therapsids known exclusively from Middle to Upper Permian strata in South Africa and Russia.
- In the south, therapsids like sheep-sized herbivorous traversodonts predominated; in the north, archosaurs were more common.
- The terminal Permian catastrophe, which killed off 95% of all types of life, cleared the world of all large therapsids and allowed the proterosuchids to take center stage as the top carnivore.
- The Russian and South African sites contain the remains of many therapsids.
- The Dinocephalians were among the most primitive of the therapsids or ‘mammal-like reptiles’.
- These basal forms evolved through the primitive pelycosaur stage, to the therapsids or mammal-like reptiles, and finally the mammals themselves.
- This development occurs at the level of the therapsids.
- Following the extinction of the Permian therapsids due to the end Permian-extinction, most of the large animals that populated Pangea were archosaurs or archosauromorphs.
- These included more advanced therapsids such the cynodonts.

Origin

Early 20th century: from modern Latin Therapsida, from Greek thēr 'beast' + hapsis, hapsid- 'arch' (referring to the structure of the skull).

Definition of therapsid in US English:

therapsid

nounTHəˈrapsid

An extinct reptile of a Permian and Triassic order, the members of which are related to the ancestors of mammals.
Order Therapsida, subclass Synapsida: many families and numerous genera, including the cynodonts
Example sentencesExamples
- It is even seen in a group of therapsids (ancestors of mammals), the tritylodonts, which lived during the Jurassic.
- Pelycosaurs and therapsids are two different orders of reptiles.
- This pattern was retained in early therapsids.
- Biarmosuchians are a group of small-to-medium sized carnivorous therapsids known exclusively from Middle to Upper Permian strata in South Africa and Russia.
- During the late Permian the dinocephalians suddenly disappeared (possibly due to disease or changing environmental factors), and were replaced by a further wave of more mammalian therapsids.
- Whether or not his reconstruction corresponds to an actual creature, it at least represents a good morphotype for slightly more derived, but still primitive, therapsids from the Late Permian.
- The terminal Permian catastrophe, which killed off 95% of all types of life, cleared the world of all large therapsids and allowed the proterosuchids to take center stage as the top carnivore.
- These basal forms evolved through the primitive pelycosaur stage, to the therapsids or mammal-like reptiles, and finally the mammals themselves.
- Following the extinction of the Permian therapsids due to the end Permian-extinction, most of the large animals that populated Pangea were archosaurs or archosauromorphs.
- On land amphibians and therapsids (mammal-like reptiles) were both badly affected, while vascular plant diversity dropped by 50 per cent.
- Consequently, lung ventilation rates and, by extension, metabolic rates of the earliest mammals, and at least some Triassic Period therapsids, are likely to have approached or been equal to those of extant mammals.
- The first fossil reptiles from the Karoo were found in the 1850s by Andrew Geddes Bain and were the first specimens of a new group of ‘reptiles’ called the therapsids, which were recognized as being the distant ancestors of mammals.
- These included more advanced therapsids such the cynodonts.
- This development occurs at the level of the therapsids.
- In the south, therapsids like sheep-sized herbivorous traversodonts predominated; in the north, archosaurs were more common.
- This gap is all the more extreme because pelycosaurs and therapsids are each large, internally-diverse groups.
- The therapsids of this time belonged to several distinct (albeit related) lineages, none with clear antecedents.
- The Dinocephalians were among the most primitive of the therapsids or ‘mammal-like reptiles’.
- The Russian and South African sites contain the remains of many therapsids.
- However, he was the first to spot the connection between the early therapsids and the mammals.

Origin

Early 20th century: from modern Latin Therapsida, from Greek thēr ‘beast’ + hapsis, hapsid- ‘arch’ (referring to the structure of the skull).

单词	therapsid
释义	Definition of therapsid in English: therapsid noun θɛˈrapsɪdTHəˈrapsid A fossil reptile of a Permian and Triassic order, the members of which are related to the ancestors of mammals. Order Therapsida, subclass Synapsida: many families and numerous genera, including the cynodonts Example sentencesExamples This pattern was retained in early therapsids. Consequently, lung ventilation rates and, by extension, metabolic rates of the earliest mammals, and at least some Triassic Period therapsids, are likely to have approached or been equal to those of extant mammals. The first fossil reptiles from the Karoo were found in the 1850s by Andrew Geddes Bain and were the first specimens of a new group of ‘reptiles’ called the therapsids, which were recognized as being the distant ancestors of mammals. The therapsids of this time belonged to several distinct (albeit related) lineages, none with clear antecedents. It is even seen in a group of therapsids (ancestors of mammals), the tritylodonts, which lived during the Jurassic. On land amphibians and therapsids (mammal-like reptiles) were both badly affected, while vascular plant diversity dropped by 50 per cent. Whether or not his reconstruction corresponds to an actual creature, it at least represents a good morphotype for slightly more derived, but still primitive, therapsids from the Late Permian. Pelycosaurs and therapsids are two different orders of reptiles. During the late Permian the dinocephalians suddenly disappeared (possibly due to disease or changing environmental factors), and were replaced by a further wave of more mammalian therapsids. However, he was the first to spot the connection between the early therapsids and the mammals. This gap is all the more extreme because pelycosaurs and therapsids are each large, internally-diverse groups. Biarmosuchians are a group of small-to-medium sized carnivorous therapsids known exclusively from Middle to Upper Permian strata in South Africa and Russia. In the south, therapsids like sheep-sized herbivorous traversodonts predominated; in the north, archosaurs were more common. The terminal Permian catastrophe, which killed off 95% of all types of life, cleared the world of all large therapsids and allowed the proterosuchids to take center stage as the top carnivore. The Russian and South African sites contain the remains of many therapsids. The Dinocephalians were among the most primitive of the therapsids or ‘mammal-like reptiles’. These basal forms evolved through the primitive pelycosaur stage, to the therapsids or mammal-like reptiles, and finally the mammals themselves. This development occurs at the level of the therapsids. Following the extinction of the Permian therapsids due to the end Permian-extinction, most of the large animals that populated Pangea were archosaurs or archosauromorphs. These included more advanced therapsids such the cynodonts. Origin Early 20th century: from modern Latin Therapsida, from Greek thēr 'beast' + hapsis, hapsid- 'arch' (referring to the structure of the skull). Definition of therapsid in US English: therapsid nounTHəˈrapsid An extinct reptile of a Permian and Triassic order, the members of which are related to the ancestors of mammals. Order Therapsida, subclass Synapsida: many families and numerous genera, including the cynodonts Example sentencesExamples It is even seen in a group of therapsids (ancestors of mammals), the tritylodonts, which lived during the Jurassic. Pelycosaurs and therapsids are two different orders of reptiles. This pattern was retained in early therapsids. Biarmosuchians are a group of small-to-medium sized carnivorous therapsids known exclusively from Middle to Upper Permian strata in South Africa and Russia. During the late Permian the dinocephalians suddenly disappeared (possibly due to disease or changing environmental factors), and were replaced by a further wave of more mammalian therapsids. Whether or not his reconstruction corresponds to an actual creature, it at least represents a good morphotype for slightly more derived, but still primitive, therapsids from the Late Permian. The terminal Permian catastrophe, which killed off 95% of all types of life, cleared the world of all large therapsids and allowed the proterosuchids to take center stage as the top carnivore. These basal forms evolved through the primitive pelycosaur stage, to the therapsids or mammal-like reptiles, and finally the mammals themselves. Following the extinction of the Permian therapsids due to the end Permian-extinction, most of the large animals that populated Pangea were archosaurs or archosauromorphs. On land amphibians and therapsids (mammal-like reptiles) were both badly affected, while vascular plant diversity dropped by 50 per cent. Consequently, lung ventilation rates and, by extension, metabolic rates of the earliest mammals, and at least some Triassic Period therapsids, are likely to have approached or been equal to those of extant mammals. The first fossil reptiles from the Karoo were found in the 1850s by Andrew Geddes Bain and were the first specimens of a new group of ‘reptiles’ called the therapsids, which were recognized as being the distant ancestors of mammals. These included more advanced therapsids such the cynodonts. This development occurs at the level of the therapsids. In the south, therapsids like sheep-sized herbivorous traversodonts predominated; in the north, archosaurs were more common. This gap is all the more extreme because pelycosaurs and therapsids are each large, internally-diverse groups. The therapsids of this time belonged to several distinct (albeit related) lineages, none with clear antecedents. The Dinocephalians were among the most primitive of the therapsids or ‘mammal-like reptiles’. The Russian and South African sites contain the remains of many therapsids. However, he was the first to spot the connection between the early therapsids and the mammals. Origin Early 20th century: from modern Latin Therapsida, from Greek thēr ‘beast’ + hapsis, hapsid- ‘arch’ (referring to the structure of the skull).
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