Ornithodira
E933111
Ornithodira is a clade of archosaurs that includes the last common ancestor of pterosaurs and dinosaurs and all of its descendants.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Ornithodira canonical | 6 |
| Dinosauromorpha | 4 |
How this entity was disambiguated
This entity first appeared as the object of triple T11380335 — 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: Ornithodira Context triple: [Archosauria, contains, Ornithodira]
-
A.
Archosauria
Archosauria is a major group of diapsid reptiles that includes all living birds and crocodilians, as well as their extinct dinosaur and pterosaur relatives.
-
B.
Archelosauria
Archelosauria is a major reptile clade that unites turtles with archosaurs such as crocodilians and birds based on shared evolutionary ancestry.
-
C.
Diapsida
Diapsida is a major clade of reptiles characterized by two temporal skull openings, encompassing groups such as lizards, snakes, crocodilians, and birds.
-
D.
Paraves
Paraves is a clade of feathered theropod dinosaurs that includes birds and their closest non-avian relatives, such as dromaeosaurids and troodontids.
-
E.
Ornithischia
Ornithischia is a major clade of primarily herbivorous, bird-hipped dinosaurs that includes groups such as stegosaurs, ankylosaurs, and ceratopsians.
- 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: Ornithodira Target entity description: Ornithodira is a clade of archosaurs that includes the last common ancestor of pterosaurs and dinosaurs and all of its descendants.
-
A.
Archosauria
Archosauria is a major group of diapsid reptiles that includes all living birds and crocodilians, as well as their extinct dinosaur and pterosaur relatives.
-
B.
Archelosauria
Archelosauria is a major reptile clade that unites turtles with archosaurs such as crocodilians and birds based on shared evolutionary ancestry.
-
C.
Diapsida
Diapsida is a major clade of reptiles characterized by two temporal skull openings, encompassing groups such as lizards, snakes, crocodilians, and birds.
-
D.
Paraves
Paraves is a clade of feathered theropod dinosaurs that includes birds and their closest non-avian relatives, such as dromaeosaurids and troodontids.
-
E.
Ornithischia
Ornithischia is a major clade of primarily herbivorous, bird-hipped dinosaurs that includes groups such as stegosaurs, ankylosaurs, and ceratopsians.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
clade
ⓘ
taxon ⓘ |
| clade |
Archosauria
ⓘ
Diapsida ⓘ Reptilia ⓘ |
| definedAs | last common ancestor of pterosaurs and dinosaurs and all of its descendants ⓘ |
| distinguishedFrom | Pseudosuchia by bird-line ankle morphology ⓘ |
| etymology | from Greek for "bird neck" ⓘ |
| hasCharacteristic |
adaptations associated with bipedal locomotion
ⓘ
digitigrade stance ⓘ elongated distal hindlimbs ⓘ lightly built skeleton ⓘ narrow, pillar-like tarsus ⓘ reduced fifth toe on the foot ⓘ relatively long neck ⓘ |
| hasSynonym | Avemetatarsalia (in some usages, partially overlapping concepts) ⓘ |
| higherClassification |
Amniota
ⓘ
Animalia ⓘ Archosauria ⓘ Chordata ⓘ Diapsida ⓘ Sauropsida ⓘ Tetrapoda ⓘ Vertebrata ⓘ |
| includesExtantTaxa | birds ⓘ |
| includesExtinctTaxa |
non-avian dinosaurs
ⓘ
pterosaurs ⓘ |
| includesTaxon |
Aves
ⓘ
Dinosauria ⓘ Dinosauromorpha ⓘ
linked to:
Ornithodira
Pterosauria ⓘ Pterosauromorpha ⓘ
linked to:
Pterosauria
|
| infraphylum | Tetrapoda ⓘ |
| kingdom | Animalia ⓘ |
| namedBy | Jacques Gauthier ⓘ |
| parentTaxon |
Archosauria
ⓘ
Avemetatarsalia ⓘ |
| phylum | Chordata ⓘ |
| relatedTo | Pseudosuchia ⓘ |
| sisterClade | Pseudosuchia ⓘ |
| subclassOf |
Archosauria
ⓘ
Avemetatarsalia ⓘ |
| subphylum | Vertebrata ⓘ |
| taxonRank | clade ⓘ |
| temporalRange | Middle Triassic to present ⓘ |
| yearNamed | 1986 ⓘ |
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: Ornithodira Description of subject: Ornithodira is a clade of archosaurs that includes the last common ancestor of pterosaurs and dinosaurs and all of its descendants.
Referenced by (10)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Ornithodira
linked to: Ornithodira
linked to: Ornithodira
linked to: Ornithodira