Synapsids Meaning and Definition
Synapsids
Pronunciation
/ˈsɪnæpsɪdz/
Part of Speech
Noun
Definition
A group of mammals that include modern mammals and their extinct relatives, characterized by the presence of a temporal fenestra, a hole in the skull behind the eye socket.
Examples
- Fossil records show that synapsids dominated terrestrial ecosystems during the Paleozoic Era.
- The study of synapsids has greatly expanded our understanding of mammalian evolution.
Synonyms
- Mammal-like reptiles
- Early mammals
Antonyms
- Reptiles
- Amphibians
Additional Information
Synapsids were one of the most successful groups of animals to have lived on land, with a history spanning over 300 million years. They were characterized by their adaptation to a wide range of environments, from deserts to forests. Synapsids played a crucial role in shaping the evolution of modern mammals, with many of their characteristics still present in modern species.
One of the most famous synapsids is the Dimetrodon, a large, carnivorous species that lived during the Early Permian period. Its distinctive sail-like fin on its back was likely used for thermoregulation and display purposes.
Etymology
The term “synapsid” comes from the Greek words “synapsis,” meaning “union,” and “eidos,” meaning “form.” It was coined by American paleontologist Edward Drinker Cope in 1874 to describe the unique characteristics of this group of animals.
Usage Notes
Synapsids are often used as a synonym for “mammal-like reptiles,” but this term is somewhat misleading, as synapsids were not reptiles, but rather a distinct group of mammals.
Cultural References
Synapsids have appeared in various forms of media, including documentaries, books, and films. They are often depicted as fierce and dominant creatures, ruling the ancient landscapes.
Idiomatic Expressions or Phrases
- None
Related Words or Phrases
- Mammalia
- Therapsid
- Pelycosaur
Collocations
- synapsid skull
- synapsid evolution
- early synapsids
Frequency of Use
Synapsids are an important concept in the field of paleontology, but their usage is relatively rare in everyday language.
Common Misspellings
- Synapsides
- Synapsys
- Synapsdis