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gptkbp:instance_of
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gptkb:genus
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gptkbp:adaptations
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streamlined body
foraging strategy
foraging in water
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gptkbp:anatomy
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compared with modern birds.
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gptkbp:body_shape
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aquatic
streamlined shape
streamlined body
hollow bones
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gptkbp:breathability
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air sacs
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gptkbp:characteristic
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webbed feet
streamlined body
toothed beak
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gptkbp:coloration
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conical
dark plumage
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gptkbp:cultural_significance
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transitional fossil
shows link between birds and reptiles
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gptkbp:discovered_by
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gptkb:Othniel_Charles_Marsh
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gptkbp:discovery_year
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1872
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gptkbp:ecological_role
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predator in marine ecosystems
top predator in its environment
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gptkbp:exhibited_at
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diving behavior
diving adaptations
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gptkbp:extinction_cause
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climate change
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gptkbp:eye_color
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dorsal
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gptkbp:faced
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nostrils positioned high
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gptkbp:foot
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webbed
flipper-like limbs
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gptkbp:foraging_behavior
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pursuit diving
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gptkbp:fossil_record
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gptkb:Idaho
gptkb:Africa
gptkb:Europe
gptkb:Asia
gptkb:Australia
gptkb:British_Columbia
gptkb:California
gptkb:Colorado
gptkb:Greenland
gptkb:Hawaii
gptkb:Mexico
gptkb:New_Jersey
gptkb:New_Mexico
gptkb:North_Dakota
gptkb:Oregon
gptkb:South_Dakota
gptkb:Texas
gptkb:Utah
gptkb:Washington
gptkb:Alaska
gptkb:Nevada
gptkb:Wyoming
gptkb:Alberta
gptkb:Kansas
gptkb:Montana
gptkb:Saskatchewan
gptkb:Manitoba
gptkb:Western_Interior_Seaway
well-documented
held in various museums
approximately 70 million years old
bone fossils
complete skeletons
marine bird fossils
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gptkbp:geological_features
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Cretaceous period
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gptkbp:geological_formation
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gptkb:Niobrara_Formation
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gptkbp:habitat
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marine environments
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gptkbp:has_adaptation
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excellent underwater vision
diving ability
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gptkbp:has_anatomical_feature
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strong beak
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gptkbp:has_behavior
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social behavior
foraging in water
nesting on land
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gptkbp:has_color
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dark plumage
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gptkbp:has_cultural_impact
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featured in paleontological studies
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gptkbp:has_diet
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gptkb:fish
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gptkbp:has_features
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long neck
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gptkbp:has_fossil_discovery_location
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gptkb:Kansas,_USA
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gptkbp:has_fossil_range
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Cretaceous period
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gptkbp:has_paleogeographic_distribution
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North American coastlines
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gptkbp:has_paleontologist_interest
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attracts researchers worldwide
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gptkbp:has_phylogenetic_relation
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modern birds
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gptkbp:head
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flattened skull
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|
https://www.w3.org/2000/01/rdf-schema#label
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Hesperornis
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gptkbp:is_a
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gptkb:bird
|
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gptkbp:is_considered
|
a transitional form
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gptkbp:is_found_in
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gptkb:North_America
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gptkbp:is_known_to
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gptkb:fossils
fossil records
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gptkbp:is_notable_for
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limblessness in flight
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gptkbp:is_part_of
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gptkb:Anárion
Hesperornithidae family
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gptkbp:is_related_to
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gptkb:Ichthyornis
modern birds
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gptkbp:length
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1 to 2 meters
1 to 1.5 meters
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gptkbp:lived_during
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Late Cretaceous
Late Cretaceous period
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gptkbp:movement
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gptkb:swimming
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gptkbp:nesting
|
ground nesting
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gptkbp:paleobiology
|
provides insight into avian evolution
studied for flight evolution
example of flightless birds
insight into avian evolution
understanding bird evolution
indicates ancient marine ecosystems
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gptkbp:predators
|
gptkb:Lizard
large marine reptiles
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gptkbp:related_species
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gptkb:Gaviiformes
|
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gptkbp:reproduction
|
oviparous
laying eggs in nests
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gptkbp:research_importance
|
important for understanding bird evolution
|
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gptkbp:scientific_name
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gptkb:Hesperornis_regalis
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gptkbp:social_behavior
|
solitary or small groups
|
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gptkbp:species
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gptkb:Hesperornis_crassipes
gptkb:Hesperornis_gracilis
gptkb:Hesperornis_latifrons
gptkb:Hesperornis_parvus
gptkb:Hesperornis_regalis
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gptkbp:tail_type
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short
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gptkbp:weight
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up to 10 kg
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gptkbp:wildlife
|
end of the Cretaceous
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gptkbp:wingspan
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reduced
reduced wings
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gptkbp:bfsParent
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gptkb:dinosaurs
|
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gptkbp:bfsLayer
|
4
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