Synapsida
E660829
Synapsida is a major clade of amniotes that includes mammals and their extinct, mammal-like ancestors distinguished by a single temporal opening in the skull behind each eye.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Synapsida canonical | 4 |
How this entity was disambiguated
This entity first appeared as the object of triple T7388801 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Synapsida Context triple: [Theria, memberOf, Synapsida]
-
A.
Diapsida
Diapsida is a major clade of reptiles characterized by two temporal skull openings, encompassing groups such as lizards, snakes, crocodilians, and birds.
-
B.
Theria
Theria is a major subclass of mammals that includes all live-bearing species such as marsupials and placental mammals, excluding egg-laying monotremes.
-
C.
Amniota
Amniota is a clade of vertebrate animals characterized by having an amniotic egg, including reptiles, birds, and mammals.
-
D.
Rhynchocephalia
Rhynchocephalia is an ancient order of reptiles, now represented only by the tuatara, that diverged early from other reptilian lineages and retains many primitive characteristics.
-
E.
Cryptodira
Cryptodira is a major suborder of turtles characterized by their ability to retract the head straight back into the shell by bending the neck in a vertical S-shaped curve.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Synapsida Target entity description: Synapsida is a major clade of amniotes that includes mammals and their extinct, mammal-like ancestors distinguished by a single temporal opening in the skull behind each eye.
-
A.
Diapsida
Diapsida is a major clade of reptiles characterized by two temporal skull openings, encompassing groups such as lizards, snakes, crocodilians, and birds.
-
B.
Theria
Theria is a major subclass of mammals that includes all live-bearing species such as marsupials and placental mammals, excluding egg-laying monotremes.
-
C.
Amniota
Amniota is a clade of vertebrate animals characterized by having an amniotic egg, including reptiles, birds, and mammals.
-
D.
Rhynchocephalia
Rhynchocephalia is an ancient order of reptiles, now represented only by the tuatara, that diverged early from other reptilian lineages and retains many primitive characteristics.
-
E.
Cryptodira
Cryptodira is a major suborder of turtles characterized by their ability to retract the head straight back into the shell by bending the neck in a vertical S-shaped curve.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
amniote clade
ⓘ
clade ⓘ taxon ⓘ |
| ancestralTo | mammals ⓘ |
| characteristicFeature | temporal fenestra ⓘ |
| clade | Amniota NERFINISHED ⓘ |
| containsExtantLineages | true ⓘ |
| contrastedWith |
Anapsida
NERFINISHED
ⓘ
Diapsida NERFINISHED ⓘ |
| distinguishedBy | single temporal opening in the skull behind each eye ⓘ |
| extantRepresentatives | mammals ⓘ |
| firstAppearance |
Late Carboniferous
ⓘ
Pennsylvanian ⓘ |
| firstAppearanceInMa | about 320 ⓘ |
| fossilRecordRegion | global ⓘ |
| hasCommonName | synapsids ⓘ |
| hasMember |
Cynodontia
ⓘ
Dimetrodon NERFINISHED ⓘ Edaphosaurus NERFINISHED ⓘ Gorgonopsia NERFINISHED ⓘ Lystrosaurus NERFINISHED ⓘ Mammalia NERFINISHED ⓘ |
| hasSubgroup |
Anomodontia
NERFINISHED
ⓘ
Biarmosuchia NERFINISHED ⓘ Cynodontia NERFINISHED ⓘ Dinocephalia NERFINISHED ⓘ Eupelycosauria NERFINISHED ⓘ Therapsida NERFINISHED ⓘ Theriodontia NERFINISHED ⓘ |
| includes |
Mammalia
ⓘ
mammal-like reptiles ⓘ non-mammalian synapsids ⓘ pelycosaurs ⓘ therapsids ⓘ |
| infraphylum | Gnathostomata NERFINISHED ⓘ |
| isMonophyletic | true ⓘ |
| kingdom | Animalia ⓘ |
| majorRadiation | Permian ⓘ |
| namedBy | Henry Fairfield Osborn NERFINISHED ⓘ |
| phylum | Chordata ⓘ |
| skullType | synapsid skull ⓘ |
| subphylum | Vertebrata NERFINISHED ⓘ |
| sufferedMassExtinction | end-Permian mass extinction ⓘ |
| superclass | Tetrapoda NERFINISHED ⓘ |
| survivingLineage | Mammalia ⓘ |
| taxonRank | clade ⓘ |
| temporalFenestraCountPerSide | one ⓘ |
| yearNamed | 1903 ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Synapsida Description of subject: Synapsida is a major clade of amniotes that includes mammals and their extinct, mammal-like ancestors distinguished by a single temporal opening in the skull behind each eye.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.