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- Parahesperornis abstract "Parahesperornis is a prehistoric flightless bird genus from the Late Cretaceous. Its range in space and time may have been extensive, but its remains are rather few and far between, at least compared with its contemporary relatives in Hesperornis. Remains are known from central North America, namely the former shallows of the Western Interior Seaway in Kansas. Found only in the upper Niobrara Chalk, these are from around the Coniacian-Santonian boundary, 85-82 million years ago (mya). Parahesperornis alexi (Martin, 1984) was long lumped with specimen YPM 1478, described initially as Hesperornis gracilis and later moved to the monotypic genus Hargeria (Lucas, 1903). It then turned out that this genus' description actually referred to specimen KUVP 2287, which eventually became the holotype of P. alexi. Nonetheless, the taxon the description of Hargeria was about was "Hesperornis" gracilis exclusively, and thus despite the misidentification it applies to YPM 1478, the holotype of "H." gracilis. This mistake was rectified by later authors, who sank Hargeria back into Hesperornis.Parahesperornis was a member of the Hesperornithes, flightless toothed seabirds of the Cretaceous and more specifically in the main lineage, close to Hesperornis. Possibly the genus extended into the Campanian, to less than 80 mya. In any case, there are two very similar fossils from the Nemegt Formation (Maastrichtian or possibly late Campanian, around 76-66 mya, which were found at Tsagaan Kushu (Mongolia). Both are distal ends of tibiotarsi, and they seem certainly more similar to the bones of Hesperornithiformes and (due to the smallish size) to Parahesperornis specifically. However, they are not very diagnostic regardless, and the diversity of Parahesperornis remains enigmatic.".
- Parahesperornis thumbnail Skeleton_of_Parahesperornis_alexi.jpg?width=300.
- Parahesperornis wikiPageExternalLink frame.html?3DVB0001_MAIN.htm~mainFrame.
- Parahesperornis wikiPageExternalLink Phylogeny%20of%20Taxa.html.
- Parahesperornis wikiPageExternalLink fig11.gif.
- Parahesperornis wikiPageExternalLink Hesperornis.html.
- Parahesperornis wikiPageID "13864200".
- Parahesperornis wikiPageRevisionID "603877558".
- Parahesperornis authority "Martin, 1984".
- Parahesperornis fossilRange "Late Cretaceous,".
- Parahesperornis hasPhotoCollection Parahesperornis.
- Parahesperornis imageCaption "Replica skeleton".
- Parahesperornis imageWidth "300".
- Parahesperornis typeSpecies "Parahesperornis alexi".
- Parahesperornis typeSpeciesAuthority "Martin, 1984".
- Parahesperornis subject Category:Bird_genera.
- Parahesperornis subject Category:Bird_taxa_with_documented_soft_tissue_fossils.
- Parahesperornis subject Category:Cretaceous_birds.
- Parahesperornis subject Category:Extinct_flightless_birds.
- Parahesperornis subject Category:Hesperornithidae.
- Parahesperornis type Animal100015388.
- Parahesperornis type Bird101503061.
- Parahesperornis type Chordate101466257.
- Parahesperornis type CretaceousBirds.
- Parahesperornis type ExtinctFlightlessBirds.
- Parahesperornis type LivingThing100004258.
- Parahesperornis type Object100002684.
- Parahesperornis type Organism100004475.
- Parahesperornis type PhysicalEntity100001930.
- Parahesperornis type Ratite101517565.
- Parahesperornis type Vertebrate101471682.
- Parahesperornis type Whole100003553.
- Parahesperornis comment "Parahesperornis is a prehistoric flightless bird genus from the Late Cretaceous. Its range in space and time may have been extensive, but its remains are rather few and far between, at least compared with its contemporary relatives in Hesperornis. Remains are known from central North America, namely the former shallows of the Western Interior Seaway in Kansas. Found only in the upper Niobrara Chalk, these are from around the Coniacian-Santonian boundary, 85-82 million years ago (mya).".
- Parahesperornis label "Parahesperornis".
- Parahesperornis label "Parahesperornis".
- Parahesperornis sameAs Parahesperornis.
- Parahesperornis sameAs m.03cllvn.
- Parahesperornis sameAs Q7134759.
- Parahesperornis sameAs Q7134759.
- Parahesperornis sameAs Parahesperornis.
- Parahesperornis wasDerivedFrom Parahesperornis?oldid=603877558.
- Parahesperornis depiction Skeleton_of_Parahesperornis_alexi.jpg.
- Parahesperornis isPrimaryTopicOf Parahesperornis.
