Statements (23)
| Predicate | Object | 
|---|---|
| gptkbp:instanceOf | gptkb:extinct_family_of_birds | 
| gptkbp:characteristic | flightless toothed beak diving adaptations | 
| gptkbp:class | gptkb:Aves | 
| gptkbp:distribution | gptkb:Eurasia gptkb:North_America | 
| gptkbp:endangeredStatus | extinct | 
| gptkbp:firstDescribed | gptkb:Othniel_Charles_Marsh 1872 | 
| gptkbp:habitat | marine environments | 
| gptkbp:kingdom | gptkb:Animalia | 
| gptkbp:notableMember | gptkb:Hesperornis gptkb:Baptornis gptkb:Parahesperornis | 
| gptkbp:order | gptkb:Hesperornithiformes | 
| gptkbp:phylum | gptkb:Chordata | 
| gptkbp:relatedTo | gptkb:Ichthyornithiformes modern birds | 
| gptkbp:temporalRange | gptkb:Late_Cretaceous | 
| gptkbp:bfsParent | gptkb:Hesperornis | 
| gptkbp:bfsLayer | 7 | 
| https://www.w3.org/2000/01/rdf-schema#label | Hesperornithidae |