Hyracotherium
E899432
Hyracotherium is an extinct early horse-like mammal from the Eocene epoch, notable for being one of the earliest known members of the horse family.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Hyracotherium canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T11009930 — 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: Hyracotherium Context triple: [Equidae, containsExtinctGenera, Hyracotherium]
-
A.
Xiphodon
Xiphodon is an extinct genus of small, deer-like artiodactyl mammals known from Eocene deposits in Europe.
-
B.
Dinohyus
Dinohyus is an extinct, giant pig-like entelodont mammal from the Miocene of North America, known for its massive skull, powerful jaws, and omnivorous, scavenging lifestyle.
-
C.
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.
-
D.
Mylodon darwini
Mylodon darwini is an extinct species of giant ground sloth that lived in South America during the Pleistocene and is known from well-preserved remains found in Patagonian caves.
-
E.
Caprolagus
Caprolagus is a genus of rabbits in the family Leporidae, best known for the rare hispid hare (Caprolagus hispidus) native to the Himalayan foothills.
- 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: Hyracotherium Target entity description: Hyracotherium is an extinct early horse-like mammal from the Eocene epoch, notable for being one of the earliest known members of the horse family.
-
A.
Xiphodon
Xiphodon is an extinct genus of small, deer-like artiodactyl mammals known from Eocene deposits in Europe.
-
B.
Dinohyus
Dinohyus is an extinct, giant pig-like entelodont mammal from the Miocene of North America, known for its massive skull, powerful jaws, and omnivorous, scavenging lifestyle.
-
C.
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.
-
D.
Mylodon darwini
Mylodon darwini is an extinct species of giant ground sloth that lived in South America during the Pleistocene and is known from well-preserved remains found in Patagonian caves.
-
E.
Caprolagus
Caprolagus is a genus of rabbits in the family Leporidae, best known for the rare hispid hare (Caprolagus hispidus) native to the Himalayan foothills.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
fossil taxon
ⓘ
odd-toed ungulate ⓘ perissodactyl ⓘ prehistoric mammal ⓘ |
| adaptation | teeth adapted for browsing soft leaves ⓘ |
| approximateHeightAtShoulder | about 20 centimeters ⓘ |
| approximateLength | about 60 centimeters ⓘ |
| bodySize | small ⓘ |
| clade | Pan-Perissodactyla NERFINISHED ⓘ |
| class | Mammalia ⓘ |
| dentition | low-crowned cheek teeth ⓘ |
| diet | herbivorous ⓘ |
| environment |
forest understory
ⓘ
woodlands ⓘ |
| evolutionarySignificance | early stage in horse evolution ⓘ |
| family | Palaeotheriidae NERFINISHED ⓘ |
| feedingStyle | browser ⓘ |
| firstAppearance | early Eocene ⓘ |
| fossilDiscoveryLocation | London Clay Formation NERFINISHED ⓘ |
| fossilType | skeletal remains ⓘ |
| foundIn |
Asia
NERFINISHED
ⓘ
Europe NERFINISHED ⓘ North America NERFINISHED ⓘ |
| geologicalTimeRange | approximately 56 to 47 million years ago ⓘ |
| hasCommonName | dawn horse ⓘ |
| hasHooves | true ⓘ |
| hasSynonym | Eohippus NERFINISHED ⓘ |
| isExtinct | true ⓘ |
| kingdom | Animalia ⓘ |
| livedDuring | Eocene NERFINISHED ⓘ |
| locomotion | quadrupedal ⓘ |
| namedBy | Richard Owen NERFINISHED ⓘ |
| notableFor | being one of the earliest known horse-like mammals ⓘ |
| order | Perissodactyla NERFINISHED ⓘ |
| phylum | Chordata ⓘ |
| relatedTo | Equidae NERFINISHED ⓘ |
| reproduction | viviparous ⓘ |
| resembles | small dog-sized animal ⓘ |
| skeletonCharacteristic |
arched back
ⓘ
slender limbs ⓘ |
| snout | relatively short ⓘ |
| tail | relatively long ⓘ |
| taxonRank | genus ⓘ |
| thermoregulation | endothermic ⓘ |
| toeCountForelimb | four ⓘ |
| toeCountHindlimb | three ⓘ |
| typeSpecies | Hyracotherium leporinum NERFINISHED ⓘ |
| yearDescribed | 1841 ⓘ |
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: Hyracotherium Description of subject: Hyracotherium is an extinct early horse-like mammal from the Eocene epoch, notable for being one of the earliest known members of the horse family.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.