Saurischia
E180458
Saurischia is one of the two major dinosaur clades, characterized by a lizard-hipped pelvic structure and including both theropods (ancestors of birds) and sauropodomorphs.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Saurischia canonical | 54 |
| Sauropodomorpha | 3 |
| Saurischia is not based on a single type species (clade name) | 1 |
| Saurischia sensu Seeley | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1584494 — 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: Saurischia Context triple: [Aves, hasSubgroup, Saurischia]
-
A.
Theropoda
Theropoda is a major group of mostly bipedal, primarily carnivorous dinosaurs that includes famous species like Tyrannosaurus rex and the ancestors of modern birds.
-
B.
Dinosauria
Dinosauria is a diverse clade of reptiles that originated in the Mesozoic Era and includes both extinct non-avian dinosaurs and modern birds.
-
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.
Titanosauria
Titanosauria is a diverse clade of large, long-necked sauropod dinosaurs that includes some of the heaviest and most massive land animals known from the fossil record.
-
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: Saurischia Target entity description: Saurischia is one of the two major dinosaur clades, characterized by a lizard-hipped pelvic structure and including both theropods (ancestors of birds) and sauropodomorphs.
-
A.
Theropoda
Theropoda is a major group of mostly bipedal, primarily carnivorous dinosaurs that includes famous species like Tyrannosaurus rex and the ancestors of modern birds.
-
B.
Dinosauria
Dinosauria is a diverse clade of reptiles that originated in the Mesozoic Era and includes both extinct non-avian dinosaurs and modern birds.
-
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.
Titanosauria
Titanosauria is a diverse clade of large, long-necked sauropod dinosaurs that includes some of the heaviest and most massive land animals known from the fossil record.
-
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 (49)
| Predicate | Object |
|---|---|
| instanceOf |
dinosaur clade
ⓘ
taxonomic group ⓘ |
| ancestralTo |
Aves
ⓘ
modern birds ⓘ |
| characterizedBy | lizard-hipped pelvic structure ⓘ |
| clade | Dinosauria ⓘ |
| contains |
bipedal carnivores
ⓘ
giant long-necked sauropods ⓘ large quadrupedal herbivores ⓘ small feathered theropods ⓘ |
| contrastedWith | bird-hipped pelvis of Ornithischia ⓘ |
| diagnosticFeature |
elongated cervical vertebrae in many taxa
ⓘ
hollow vertebrae in many theropods ⓘ three-pronged pelvis with forward-pointing pubis ⓘ |
| distinguishedFrom | Ornithischia by pelvic morphology ⓘ |
| etymology | from Greek "sauros" (lizard) and "ischion" (hip joint) ⓘ |
| extantRepresentatives | birds ⓘ |
| extinctionStatus | non-avian members extinct ⓘ |
| firstAppearance |
Late Triassic
ⓘ
approximately 230 million years ago ⓘ |
| geographicDistribution | fossils found on all continents ⓘ |
| higherClassification |
Saurischia
self-linksurface differs
ⓘ
surface form:
Saurischia sensu Seeley
|
| includes |
avian dinosaurs (birds)
ⓘ
non-avian theropods ⓘ sauropod dinosaurs ⓘ sauropodomorph dinosaurs ⓘ theropod dinosaurs ⓘ |
| includesClade |
Sauropodomorpha
ⓘ
Theropoda ⓘ |
| includesRepresentativeGenus |
Allosaurus
ⓘ
Apatosaurus ⓘ Brachiosaurus ⓘ Diplodocus ⓘ Tyrannosaurus ⓘ Velociraptor ⓘ |
| kingdom | Animalia ⓘ |
| majorSubgroupOf | saurischian dinosaurs ⓘ |
| meaning | lizard-hipped ⓘ |
| namedBy | Harry Seeley ⓘ |
| namedInYear | 1887 ⓘ |
| pelvicOrientation |
ischium directed posteriorly
ⓘ
pubis directed anteriorly ⓘ |
| phylum | Chordata ⓘ |
| sisterClade | Ornithischia ⓘ |
| subdivisionOf | Dinosauria ⓘ |
| taxonRank | clade ⓘ |
| temporalRange | Late Triassic to present (via birds) ⓘ |
| typeSpecies |
Saurischia
self-linksurface differs
ⓘ
surface form:
Saurischia is not based on a single type species (clade name)
|
| usedIn | dinosaur classification ⓘ |
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: Saurischia Description of subject: Saurischia is one of the two major dinosaur clades, characterized by a lizard-hipped pelvic structure and including both theropods (ancestors of birds) and sauropodomorphs.
Referenced by (59)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Sauropodomorpha
this entity surface form:
Sauropodomorpha
this entity surface form:
Saurischia is not based on a single type species (clade name)
this entity surface form:
Saurischia sensu Seeley