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  2. 20th century in ichnology - Wikipedia

    en.wikipedia.org/wiki/20th_century_in_ichnology

    Wilhelm Bock reinterpreted the footprints discovered in the Squirrel Hill Quarry as Grallator and non-dinosaurian archosaur tracks. He also described the ichnospecies Anchisauripus gwynnedensis for a dinosaur track discovered in the North Pennsylvania Railroad tunnel near Gwynned. These tracks are now thought to belong to Atreipus, however. [45 ...

  3. Fossil track - Wikipedia

    en.wikipedia.org/wiki/Fossil_track

    Combinations of footprints of different species provide clues about the interactions of those species. Even a set of footprints of a single animal gives important clues, as to whether it was bipedal or quadrupedal. In this way, it has been suggested that some pterosaurs, when on the ground, used their forelimbs in an unexpected quadrupedal action.

  4. Trace fossil - Wikipedia

    en.wikipedia.org/wiki/Trace_fossil

    The trackway Protichnites from the Cambrian, Blackberry Hill, central Wisconsin. A trace fossil, also known as an ichnofossil (/ ˈ ɪ k n oʊ f ɒ s ɪ l /; from Greek: ἴχνος ikhnos "trace, track"), is a fossil record of biological activity by lifeforms but not the preserved remains of the organism itself. [1]

  5. Fossilised tracks suggest earliest known evidence of mammals ...

    www.aol.com/fossilised-tracks-suggest-earliest...

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  6. Connecticut River Valley trackways - Wikipedia

    en.wikipedia.org/wiki/Connecticut_River_Valley...

    The Connecticut River Valley trackways are the fossilised footprints of a number of Early Jurassic dinosaurs or other archosauromorphs from the sandstone beds of Massachusetts and Connecticut. The finding has the distinction of being among the first known discoveries of dinosaur remains in North America.

  7. Hell Creek Formation - Wikipedia

    en.wikipedia.org/wiki/Hell_Creek_Formation

    Fossil footprints of dinosaurs from the Hell Creek Formation are very rare. As of 2017, there is only one find of a possible Tyrannosaurus rex footprint, dating from 2007 and described a year later. [19] The largest Triceratops skull ever discovered, nicknamed 'Dragon King', was found in Glendive, Montana, which is in the Hell Creek Formation ...

  8. Paleobiota of the Hell Creek Formation - Wikipedia

    en.wikipedia.org/wiki/Paleobiota_of_the_Hell...

    A second footprint that may have been made by a specimen of Tyrannosaurus was first reported in 2007 by British paleontologist Phil Manning, from the Hell Creek Formation of Montana. [72] This second track measures 72 centimeters (28 in) long, shorter than the track described by Lockley and Hunt.

  9. Animal track - Wikipedia

    en.wikipedia.org/wiki/Animal_track

    An animal track is an imprint left behind in soil, snow, or mud, or on some other ground surface, by an animal walking across it. Animal tracks are used by hunters in tracking their prey and by naturalists to identify animals living in a given area.