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"Tyrannosaurus rex."
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Tyrannosaurus rex
\"Describes how the Tyrannosaurus Rex was discovered, how paleontologists study its bones, and what the fossil evidence tells us about the behavior of the largest meat-eating dinosaur\"-- Provided by publisher.
Book
Correction to “Estimation of maximum body size in fossil species: A case study using Tyrannosaurus rex”
[This corrects the article DOI: 10.1002/ece3.11658.].
Journal Article
Discovering Tyrannosaurus rex
\"This book for elementary readers outlines key dates and people that have influenced the information known today about this prehistoric dinosaur species, all tracked throughout the book on a timeline. It explores the history of the Tyrannosaurus rex's discovery and how fossils show that it was a large carnivore with strong jaws\"-- Provided by publisher.
Book
FACELIFT FOR T. REX: ANALYSIS SUGGESTS IT HAD LIPS
Evidence from living reptiles supports the idea of a scaly cover over some dinosaurs' teeth. According to a study published in Science, the dagger-like teeth of theropod dinosaurs such as T. rex would not have been visible when their mouths were closed. Brink, now a vertebrate palaeontologist at the University of Manitoba in Winnipeg, Canada, notes that modern-day lizards, such as iguanas and Komodo dragons, have lips that hide their teeth.
Journal Article
T. Rex : hunter or scavenger?
Discusses evidence fom paleontologists showing that Tyrannosaurus rex both hunted and scavenged for food.
Book
The phylogeny and evolutionary history of tyrannosauroid dinosaurs
Tyrannosauroids—the group of carnivores including
Tyrannosaurs rex
—are some of the most familiar dinosaurs of all. A surge of recent discoveries has helped clarify some aspects of their evolution, but competing phylogenetic hypotheses raise questions about their relationships, biogeography and fossil record quality. We present a new phylogenetic dataset, which merges published datasets and incorporates recently discovered taxa. We analyze it with parsimony and, for the first time for a tyrannosauroid dataset, Bayesian techniques. The parsimony and Bayesian results are highly congruent and provide a framework for interpreting the biogeography and evolutionary history of tyrannosauroids. Our phylogenies illustrate that the body plan of the colossal species evolved piecemeal, imply no clear division between northern and southern species in western North America as had been argued and suggest that
T. rex
may have been an Asian migrant to North America. Over-reliance on cranial shape characters may explain why published parsimony studies have diverged and filling three major gaps in the fossil record holds the most promise for future work.
Journal Article
Tyrannosaurus rex
\"Fans of the StoryBots will recognize the colorful art from the hugely popular dinosaur video \"Tyrannosaurus Rex\" on YouTube. A gigantic body and super-sharp teeth make the Tyrannosaurus rex the most fearsome of the dinosaurs. Just don't make fun of those tiny arms! This rhyming Step 1 Science Reader will entertain while imparting simple facts about the most popular carnivorous dinosaur of all.\"-- Amazon.com
Book
A fossil protein chimera; difficulties in discriminating dinosaur peptide sequences from modern cross-contamination
A decade ago, reports that organic-rich soft tissue survived from dinosaur fossils were apparently supported by proteomics-derived sequence information of exceptionally well-preserved bone. This initial claim to the sequencing of endogenous collagen peptides from an approximately 68 Myr Tyrannosaurus rex fossil was highly controversial, largely on the grounds of potential contamination from either bacterial biofilms or from laboratory practice. In a subsequent study, collagen peptide sequences from an approximately 78 Myr Brachylophosaurus canadensis fossil were reported that have remained largely unchallenged. However, the endogeneity of these sequences relies heavily on a single peptide sequence, apparently unique to both dinosaurs. Given the potential for cross-contamination from modern bone analysed by the same team, here we extract collagen from bone samples of three individuals of ostrich, Struthio camelus. The resulting LC–MS/MS data were found to match all of the proposed sequences for both the original Tyrannosaurus and Brachylophosaurus studies. Regardless of the true nature of the dinosaur peptides, our finding highlights the difficulty of differentiating such sequences with confidence. Our results not only imply that cross-contamination cannot be ruled out, but that appropriate measures to test for endogeneity should be further evaluated.
Journal Article
Tyrannosaurus rex
\"Introduces young readers to Tyrannosaurus Rex, including physical characteristics, diet, habitat, life cycle, and the Cretaceous period\"-- Provided by publisher.
Book