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Pteranodon sternbergi is the only known species of Pteranodon with an upright crest. The lower jaw of P. sternbergi was 1.25 meters (4.1 ft) long. [ 47 ] It was collected by George F. Sternberg in 1952 and described by John Christian Harksen in 1966, from the lower portion of the Niobrara Formation.
Pteranodontids had a distinctive, elongated crest jutting from the rear of the head (most famously seen in Pteranodon itself). The spectacularly-crested Nyctosaurus is sometimes included in this family, though usually placed in its own family, the Nyctosauridae (Nicholson & Lydekker, 1889).
In 1966, American paleontologist John Christian Harksen assigned the specimens found as a new species of Pteranodon called P. sternbergi due to its distinct upright crest that set it apart from P. longiceps. Halsey W. Miller however, concluded a revision of the different species of Pteranodon in 1971, and created three different subgenera.
Pteranodontia is an extinct group of ornithocheiroid pterodactyloid pterosaurs.It lived during the Late Cretaceous (Turonian to Maastrichtian stages) of North America, South America, Europe and Africa. [1]
Pteranodontoidea (or pteranodontoids, from Greek meaning "toothless wings") is an extinct clade of ornithocheiroid pterosaurs from the Early to Late Cretaceous (early Valanginian to late Maastrichtian stages) of Asia, Africa, Europe, North America and South America. [1]
The premaxillae formed most of the crest, extending to its back, and contacted the frontoparietal part of the crest by a straight suture (a distinct feature of this species). The crest varied from 1 to 10.5 mm (0.039 to 0.413 in) in thickness; it thickened at the contact between the premaxillae and the frontoparietal part, and became gradually ...
Pteranodon skeleton. A toothless Late Cretaceous pterosaur, it was similar to Pelagornis in size and proportions and possibly in feeding habits.. Unlike the true teeth of Mesozoic stem-birds like Archaeopteryx or Ichthyornis, the pseudoteeth of the pelagornithids do not seem to have had serrated or otherwise specialized cutting edges, and were useful to hold prey for swallowing whole rather ...
More recent Pete Felten sculptures, Train Hwy (1995) and Pteranodon (2000), [36] demonstrate use of the tones of the Post Rock, which locally can have outer brown layers with a lighter inner core. In Pteranodon , displayed at Exit 161 on Interstate 70, the head is carved from brown Fencepost limestone, oriented so that the dinosaur's crest and ...