Petrolacosaurus kansensis
E673038
Petrolacosaurus kansensis is an extinct, small, lizard-like early diapsid reptile from the Late Carboniferous of North America, notable as one of the earliest known reptiles with two temporal skull openings.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Petrolacosaurus | 2 |
| Petrolacosaurus kansensis canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7577351 — 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: Petrolacosaurus kansensis Context triple: [Diapsida, typeSpecies, Petrolacosaurus kansensis]
-
A.
Othnielosaurus
Othnielosaurus is a small, bipedal ornithischian dinosaur from the Late Jurassic of North America, known for its lightly built body and herbivorous diet.
-
B.
Daspletosaurus
Daspletosaurus was a large, carnivorous tyrannosaurid dinosaur from the Late Cretaceous of North America, known as a powerful apex predator with a massive skull and robust teeth.
-
C.
Thescelosaurus neglectus
Thescelosaurus neglectus is a small, herbivorous ornithischian dinosaur from the Late Cretaceous of North America, known for its robust limbs and association with some of the last dinosaur faunas before the mass extinction.
-
D.
Compsognathus
Compsognathus was a small, bipedal carnivorous dinosaur from the Late Jurassic period, known for its slender build and for being one of the first dinosaurs reconstructed from nearly complete skeletons.
-
E.
Poebrotherium
Poebrotherium is an extinct early camelid genus from the Eocene and Oligocene of North America, known for its small, deer-like body and significance in camel evolution.
- 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: Petrolacosaurus kansensis Target entity description: Petrolacosaurus kansensis is an extinct, small, lizard-like early diapsid reptile from the Late Carboniferous of North America, notable as one of the earliest known reptiles with two temporal skull openings.
-
A.
Othnielosaurus
Othnielosaurus is a small, bipedal ornithischian dinosaur from the Late Jurassic of North America, known for its lightly built body and herbivorous diet.
-
B.
Daspletosaurus
Daspletosaurus was a large, carnivorous tyrannosaurid dinosaur from the Late Cretaceous of North America, known as a powerful apex predator with a massive skull and robust teeth.
-
C.
Thescelosaurus neglectus
Thescelosaurus neglectus is a small, herbivorous ornithischian dinosaur from the Late Cretaceous of North America, known for its robust limbs and association with some of the last dinosaur faunas before the mass extinction.
-
D.
Compsognathus
Compsognathus was a small, bipedal carnivorous dinosaur from the Late Jurassic period, known for its slender build and for being one of the first dinosaurs reconstructed from nearly complete skeletons.
-
E.
Poebrotherium
Poebrotherium is an extinct early camelid genus from the Eocene and Oligocene of North America, known for its small, deer-like body and significance in camel evolution.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf |
early diapsid
ⓘ
extinct reptile ⓘ species ⓘ |
| bodyLength | approximately 40 centimeters ⓘ |
| clade |
Diapsida
ⓘ
Neodiapsida ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| describedBy | Frank R. Peabody ⓘ |
| diet | insectivorous ⓘ |
| domain |
Eukaryota
ⓘ
linked to:
Eukarya
|
| ecologicalRole | small terrestrial predator ⓘ |
| extinctionStatus | extinct ⓘ |
| family | Petrolacosauridae ⓘ |
| formation | Douglas Group ⓘ |
| fossilFoundIn | Hamilton Quarry ⓘ |
| fossilRecord | Late Carboniferous of Kansas ⓘ |
| fossilType | body fossil ⓘ |
| genus |
Petrolacosaurus
ⓘ
linked to:
Petrolacosaurus kansensis
|
| geologicalAge | Late Pennsylvanian ⓘ |
| hasSkullType | diapsid skull ⓘ |
| hasTemporalFenestration | two lateral temporal openings ⓘ |
| holotypeRepository | University of Kansas Natural History Museum ⓘ |
| importantFor | understanding early evolution of diapsid reptiles ⓘ |
| kingdom | Animalia ⓘ |
| lifestyle | terrestrial ⓘ |
| limbs | well-developed ⓘ |
| livedIn |
Kansas
ⓘ
North America ⓘ |
| locomotion | quadrupedal ⓘ |
| notableFor |
being one of the earliest known diapsid reptiles
ⓘ
having two temporal openings in the skull ⓘ |
| order | Eosuchia ⓘ |
| phylum | Chordata ⓘ |
| preyedOn | arthropods ⓘ |
| resembles | small lizard ⓘ |
| skeletonCompleteness | relatively well known from multiple specimens ⓘ |
| skullCharacteristic | narrow skull ⓘ |
| tail | long ⓘ |
| taxonRank | species ⓘ |
| temporalRange |
Late Carboniferous
ⓘ
Pennsylvanian ⓘ |
| toothType | small conical teeth ⓘ |
| vertebrateGroup | amniote ⓘ |
| yearDescribed | 1952 ⓘ |
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: Petrolacosaurus kansensis Description of subject: Petrolacosaurus kansensis is an extinct, small, lizard-like early diapsid reptile from the Late Carboniferous of North America, notable as one of the earliest known reptiles with two temporal skull openings.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Petrolacosaurus kansensis
linked to: Petrolacosaurus kansensis