--- title: "Dinosaur" language: "en" type: "Entity" summary: "Dinosaur taxa from around the world." canonical_url: "https://reference.wolfram.com/language/ref/entity/Dinosaur.html" source: "Wolfram Language Documentation" related_guides: - title: "Entity Types" link: "https://reference.wolfram.com/language/guide/EntityTypes.en.md" --- # Dinosaur Dinosaur taxa from around the world. [Related Interpreter](https://reference.wolfram.com/language/ref/interpreter/Dinosaur.en.md) Entity["Dinosaur", name] or Entity[...] represents an entity of type "Dinosaur". Entity[...][prop] gives the value of a specified property. Entity[...][{propi, …}] gives the value of a list of properties. EntityClass["Dinosaur", {propi -> speci, …}] represents a class of entities with values of propi defined by speci. ## Sample Entities * Entity["Dinosaur", "Species:TyrannosaurusRex"]Entity["Dinosaur", "Family:Bagaceratopsidae"]Entity["Dinosaur", "Infraorder:Ceratopsia"]Entity["Dinosaur", "Species:MamenchisaurusFuxiensis"]Entity["Dinosaur", "Genus:Oviraptor"]Entity["Dinosaur", "Species:PsittacosaurusSibiricus"]Entity["Dinosaur", "Genus:Stegosaurus"]Entity["Dinosaur", "Species:TianzhenosaurusYoungi"]Entity["Dinosaur", "Genus:Triceratops"]Entity["Dinosaur", "Genus:Velociraptor"]**…** ## Sample Entity Classes * EntityClass["Dinosaur", "DinosaurSpecies"]**…** ## Properties | | | | -------------------- | --------------------- | | Ages | ages | | CountriesFoundIn | location | | Diet | diet | | DiscoveryCountry | discovery country | | DiscoveryDate | discovery date | | DiscoveryRegions | discovery regions | | EntityClasses | entity classes | | EntityTypeList | entity type list | | Etymology | etymology | | GeologicalFormations | geological formations | | Image | image | | KnownHabitat | known habitat | | Length | full length | | Name | name | | OthersOfParentClass | other members of | | ParentEntity | parent taxon | | Period | period | | Pronunciation | pronunciation | | ScientificName | scientific name | | SocialBehavior | social behavior | | SubEntities | child taxa | | TaxonomicLevel | taxonomic level | | Taxonomy | taxonomic sequence | | TimeSpan | time span | | Weight | weight | ## Details * ``"Dinosaur"`` entities include notable land-dwelling, extinct reptiles with erect hind limbs beneath the body. * Some properties are available for the ``"Dinosaur"`` entity type as a whole and can be given using the form ``EntityValue["Dinosaur", property]``. Such properties include: | | | | ----------------------------- | ------------------------------------------------------------------ | | "Properties" | the list of available properties | | "PropertyCanonicalNames" | the standard names of available properties | | "SampleEntities" | a sample list of available entities (typically of length 10) | | "SampleEntityClasses" | a sample list of available entity classes (typically of length 10) | | "EntityCount" | number of entities available | | "Entities" | the list of available entities | | "EntityCanonicalNames" | the standard names of available entities | | "EntityClasses" | the list of available entity classes | | "EntityClassCanonicalNames" | the standard names of available entity classes | | "PropertyClasses" | the list of available property classes | | "PropertyClassCanonicalNames" | the standard names of available property classes | | "PropertyCount" | number of properties available | * The following annotations can be used in the third argument of ``EntityValue["Dinosaur", property, annotation]`` : | | | | --- | --- | | "Source" | source information for the property | | "Date" | the date associated with the entity-property value (if any) | | "EntityAssociation" | an association of entities and entity-property values | | "PropertyAssociation" | an association of properties and entity-property values | | "EntityPropertyAssociation" | an association in which the specified entities are keys, and values are a nested association of properties and entity-property values | | "PropertyEntityAssociation" | an association in which the specified properties are keys, and values are a nested association of entities and entity-property values | | "Dataset" | a dataset in which the specified entities are keys, and values are an association of property names and entity-property values | * The following annotations can be used in the second argument of ``EntityValue[property, annotation]`` : | | | | ------------------------ | --------------------------------------------------------------- | | "Qualifiers" | the list of possible qualifiers for the property | | "QualifierValues" | the list of possible values that can be given to each qualifier | | "DefaultQualifierValues" | the list of default values for the property's qualifiers | | "Description" | a brief textual description of the property | | "Definition" | a detailed textual definition of the property | | "PhysicalQuantity" | the physical quantity associated with the entity-property value | | "Unit" | the unit associated with the entity-property value | * A qualifier value of ``Automatic`` indicates that an applicable format of values can be used; e.g. for the ``"Date"`` qualifier, this includes a proper date or date span. --- ## Examples (4) ### Basic Examples (4) Use ctrl+= for entity discovery: ```wl In[1]:= [image] Out[1]= Entity["Dinosaur", "Species:TyrannosaurusRex"] ``` --- Find a property value for an entity: ```wl In[1]:= Entity["Dinosaur", "Genus:Stegosaurus"]["Etymology"] Out[1]= "roof lizard" ``` --- Retrieve a dataset of all available properties for an entity: ```wl In[1]:= Entity["Dinosaur", "Genus:Triceratops"]["Dataset"]//DeleteMissing Out[1]= Dataset[Association[EntityProperty["Dinosaur", "CountriesFoundIn"] -> {Entity["Country", "UnitedStates"]}, EntityProperty["Dinosaur", "Diet"] -> {"herbivorous"}, EntityProperty["Dinosaur", "Etymology"] -> "three‐horned face", EntityProper ... ratops"}, EntityProperty["Dinosaur", "TimeSpan"] -> Quantity[Interval[{65000000, 7.060000000000012*^7}], "Years"], EntityProperty["Thing", "EntityTypeList"] -> {EntityType["Dinosaur"]}, EntityProperty["Thing", "Name"] -> "Triceratops"]] ``` --- Find dinosaur species weighing less than a golden retriever: ```wl In[1]:= EntityClass["Dinosaur", "Weight" -> LessThan[Entity["DogBreed", "GoldenRetriever"]["WeightMaleMean"]]]//EntityList//Shallow Out[1]//Shallow= {Entity["Dinosaur", "Species:StaurikosaurusPricei"], Entity["Dinosaur", "Species:AtlascopcosaurusLoadsi"], Entity["Dinosaur", "Species:ValdosaurusNigeriensis"], Entity["Dinosaur", "Species:XuanhuaceratopsNiei"], Entity["Dinosaur", "Species:Psittaco ... sLujiatunensis"], Entity["Dinosaur", "Species:PsittacosaurusMazongshanensis"], Entity["Dinosaur", "Species:PsittacosaurusSibiricus"], Entity["Dinosaur", "Species:ChirostenotesPergracilis"], Entity["Dinosaur", "Species:AristosuchusPusillus"], «65»} ``` ## See Also * [`TaxonomicSpecies`](https://reference.wolfram.com/language/ref/entity/TaxonomicSpecies.en.md) * [`DogBreed`](https://reference.wolfram.com/language/ref/entity/DogBreed.en.md) * [`CatBreed`](https://reference.wolfram.com/language/ref/entity/CatBreed.en.md) * [`GeologicalFormation`](https://reference.wolfram.com/language/ref/entity/GeologicalFormation.en.md) * [`GeologicalPeriod`](https://reference.wolfram.com/language/ref/entity/GeologicalPeriod.en.md) * [`Dinosaur`](https://reference.wolfram.com/language/ref/interpreter/Dinosaur.en.md) * [`ComputedDinosaur`](https://reference.wolfram.com/language/ref/interpreter/ComputedDinosaur.en.md) * [`DogBreed`](https://reference.wolfram.com/language/ref/interpreter/DogBreed.en.md) * [`ComputedDogBreed`](https://reference.wolfram.com/language/ref/interpreter/ComputedDogBreed.en.md) * [`CatBreed`](https://reference.wolfram.com/language/ref/interpreter/CatBreed.en.md) * [`ComputedCatBreed`](https://reference.wolfram.com/language/ref/interpreter/ComputedCatBreed.en.md) * [`GeologicalFormation`](https://reference.wolfram.com/language/ref/interpreter/GeologicalFormation.en.md) * [`ComputedGeologicalFormation`](https://reference.wolfram.com/language/ref/interpreter/ComputedGeologicalFormation.en.md) * [`GeologicalPeriod`](https://reference.wolfram.com/language/ref/interpreter/GeologicalPeriod.en.md) * [`ComputedGeologicalPeriod`](https://reference.wolfram.com/language/ref/interpreter/ComputedGeologicalPeriod.en.md) * [`Dinosaur`](https://reference.wolfram.com/language/ref/textcontent/Dinosaur.en.md) ## Related Guides * [Entity Types](https://reference.wolfram.com/language/guide/EntityTypes.en.md) ## History * [Introduced in 2019 (12.0)](https://reference.wolfram.com/language/guide/SummaryOfNewFeaturesIn120.en.md)