A king-sized theropod coprolite

  title={A king-sized theropod coprolite},
  author={Karen Chin and Tim T. Tokaryk and Gregory M. Erickson and Lewis C. Calk},
Fossil faeces (coprolites) provide unique trophic perspectives on ancient ecosystems. Yet, although thousands of coprolites have been discovered, specimens that can be unequivocally attributed to carnivorous dinosaurs are almost unknown. A few fossil faeces have been ascribed to herbivorous dinosaurs, but it is more difficult to identify coprolites produced by theropods because other carnivorous taxa coexisted with dinosaurs and most faeces are taxonomically ambiguous. Thus sizeable (up to 20… 
Beetle-bearing coprolites possibly reveal the diet of a Late Triassic dinosauriform
It is hypothesized that the beak-like jaws of S. opolensis were used to efficiently peck small insects off the ground, a feeding behaviour analogous to some extant birds.
Filter feeding in Late Jurassic pterosaurs supported by coprolite contents
The combined evidence from the tracks and coprolites suggest a filter-feeding ctenochasmatid as the most likely tracemaker in Jurassic pterosaur groups, which significantly expands the bromalite record for this pterosaurs group.
Early Triassic coprolites from Australia and their palaeobiological significance
Abstract:  Coprolites from the Arcadia Formation, Queensland, Australia, were studied in conjunction with the vertebrate fossil assemblages from two localities to maximize our understanding of the
Analyses of Coprolites Produced by Carnivorous Vertebrates
  • K. Chin
  • Geography, Environmental Science
  • 2002
The fossil record contains far more coprolites produced by carnivorous animals than by herbivores, and this inequity reflects the fact that feces generated by diets of flesh and bone contain chemical constituents that may precipitate out under certain conditions as permineralizing phosphates.
Coprolite morphotypes from the Upper Cretaceous of Sweden: novel views on an ancient ecosystem and implications for coprolite taphonomy
The collective data from the Asen coprolites provide new insights into a shallow-water Late Cretaceous marine ecosystem hitherto known solely from body fossils.
Multi‐proxy analyses of Late Cretaceous coprolites from Germany
The phosphatic composition, frequent bone inclusions, size and morphology collectively suggest that most, if not all, coprolites were produced by carnivorous (predatory or scavenging) vertebrates.
Bromalites from a turtle-dominated fossil assemblage from the Triassic of Poland
The Fossil Record of Predation in Dinosaurs
The K/T extinction event(s) did not end dinosaurian predation, because carnivorous birds remained prominent predators throughout the Cenozoic Era, and dinosaurian predator-prey complexes varies as a function of time and geography.


Crocodilian scatology, microvertebrate concentrations, and enamel-less teeth
  • D. Fisher
  • Geography, Environmental Science
  • 1981
It has been suggested that certain fossil assemblages consisting of disarticulated and broken remains of small to medium-sized vertebrates (“microvertebrate concentrations”) may be accumulations of
Dinosaurs, mammals, and Mesozoic taphonomy
Predation is an important mode by which animals enter the fossil record. Reptilian and amphibian digestive systems decalcify prey, whereas those of small mammalian predators do not. The origin of
Dinosaurs, dung beetles, and conifers; participants in a Cretaceous food web
Late Cretaceous trace fossils from the Two Medicine Formation of Montana are interpreted as herbivorous dinosaur feces reworked by scarabaeine dung beetles. These irregular blocks of comminuted plant
Bite-force estimation for Tyrannosaurus rex from tooth-marked bones
The discovery of skeletal remains with bite marks from Tyrannosaurus rex makes it possible to estimate, through indentation simulations on bovine ilia, the bite forces produced by T. rexduring feeding, and these estimates rival the largest bite forces determined for any taxon to date and suggest thatT.
The palaeobiology of trace fossils
Nomenclature and Taxonomy of Invertebrate Trace Fossils and the Ichnofacies Concept: Implications for Paleoecology and Palichnostratigraphy and the Fossil Record of Vertebrate Eggs.
A Consideration of the Trophic Dynamics of a Late Cretaceous Large-Dinosaur Community (Oldman Formation)
Calculations suggest that the annual secondary production of endothermic herbivorous dinosaurs would have been insufficient to meet the food requirements of anendothermic carnivorous dinosaur population as large as is preserved in the Oldman Formation.
Prey bone utilization by predatory dinosaurs
Implications of body-mass estimates for dinosaurs
ABSTRACT Body-mass estimates have been made for 220 of the over 300 generally accepted dinosaur genera. The 1–10 ton body-mass category is the modal one for all dinosaur genera, dinosaurs on nearly
Body mass, bone “strength indicator,” and cursorial potential of Tyrannosaurus rex
The implication is that the cursorial potential of Tyrannosaurus was limited, a conclusion consistent with observed declines in sprint speed with increasing body mass in living animals, and also consistent with the tibia/femur length ratio, and the construction of the hip joint, of the dinosaur.
Gastric digestion in some raptors.