Tyrannosaurus Rex (~68 MYA to ~66 MYA)

A Tyrannosaurus Rex (~68 MYA to ~66 MYA) is a theropod dinosaur that served as an apex predator within the late Cretaceous ecosystem of what is now North America.

• AKA: T. Rex, Tyrant Lizard King, T-Rex.
• Context:
  • It can typically reach Massive Body Size of up to 12-13 meters in tyrannosaurus rex length and 5-7 tons in tyrannosaurus rex weight.
  • It can typically possess Powerful Bite Force estimated at between 35,000 to 60,000 newtons of tyrannosaurus rex bite pressure.
  • It can typically feature Reduced Forelimb structures with only two tyrannosaurus rex digits per limb.
  • It can typically exhibit Robust Skull Structure with numerous tyrannosaurus rex sensory adaptations.
  • It can typically utilize Binocular Vision for enhanced tyrannosaurus rex predatory capability.
  • It can typically possess Serrated Tooth Morphology optimized for tyrannosaurus rex flesh-shearing function.
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  • It can often demonstrate Ontogenetic Change throughout its tyrannosaurus rex life cycle.
  • It can often display Sexual Dimorphism between tyrannosaurus rex male specimens and tyrannosaurus rex female specimens.
  • It can often preserve in Fossilized Remains across tyrannosaurus rex geological formations.
  • It can often exhibit Complex Predatory Behavior based on tyrannosaurus rex anatomical capabilitys.
  • It can often feature in Scientific Research related to tyrannosaurus rex evolutionary history.
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  • It can range from being a Juvenile Tyrannosaurus Rex (~68 MYA to ~66 MYA) to being a Mature Tyrannosaurus Rex (~68 MYA to ~66 MYA), depending on its tyrannosaurus rex developmental stage.
  • It can range from being a Gracile Tyrannosaurus Rex (~68 MYA to ~66 MYA) to being a Robust Tyrannosaurus Rex (~68 MYA to ~66 MYA), depending on its tyrannosaurus rex morphological variation.
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  • It can interact with Late Cretaceous Herbivore Species through tyrannosaurus rex predation relationships.
  • It can influence Late Cretaceous Ecosystem Structure through tyrannosaurus rex trophic cascade effects.
  • It can compete with Other Late Cretaceous Predator species for tyrannosaurus rex territorial resources.
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• Examples:
  • Tyrannosaurus Rex Specimen Types, such as:
    • Complete Tyrannosaurus Rex Specimens, such as:
      • Sue (Tyrannosaurus Rex Specimen) discovered in South Dakota in 1990, representing one of the largest and most complete tyrannosaurus rex skeletons.
      • Stan (Tyrannosaurus Rex Specimen) discovered in South Dakota in 1987, showing evidence of tyrannosaurus rex intraspecific combat.
      • Scotty (Tyrannosaurus Rex Specimen) discovered in Saskatchewan in 1991, considered one of the largest and oldest tyrannosaurus rex individuals.
    • Partial Tyrannosaurus Rex Specimens, such as:
      • Wankel Rex (Tyrannosaurus Rex Specimen) discovered in Montana in 1988, featuring well-preserved tyrannosaurus rex forelimb structures.
      • Trix (Tyrannosaurus Rex Specimen) discovered in Montana in 2013, representing an elderly tyrannosaurus rex individual.
  • Tyrannosaurus Rex Research Focuses, such as:
    • Tyrannosaurus Rex Locomotion Studys, such as:
      • Tyrannosaurus Rex Running Capability Analysis examining tyrannosaurus rex movement biomechanics.
      • Tyrannosaurus Rex Turning Radius Research investigating tyrannosaurus rex hunting maneuverability.
    • Tyrannosaurus Rex Sensory Studys, such as:
      • Tyrannosaurus Rex Olfactory Capability Research assessing tyrannosaurus rex smell sensitivity.
      • Tyrannosaurus Rex Visual Acuity Analysis examining tyrannosaurus rex predatory adaptations.
  • ...
• Counter-Examples:
  • Giganotosaurus (~100 MYA to ~97 MYA), which existed in South America during the early Cretaceous period rather than North America during the late Cretaceous period.
  • Spinosaurus (~100 MYA to ~93 MYA), which possessed elongated neural spines and adapted to semi-aquatic lifestyles unlike the terrestrial tyrannosaurus rex ecology.
  • Albertosaurus (~73 MYA to ~70 MYA), which was smaller in albertosaurus body size and had more gracile albertosaurus skeletal proportions compared to tyrannosaurus rex robustness.
  • Tarbosaurus (~70 MYA to ~66 MYA), which inhabited Asia rather than North America despite being a closely related tyrannosaurid species.
• See: Theropod Dinosaur, Cretaceous Apex Predator, Tyrannosauridae, Cretaceous-Paleogene Extinction Event, Dinosaur Paleobiology.

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