Evolution of vision and hearing modalities in theropod dinosaurs

  title={Evolution of vision and hearing modalities in theropod dinosaurs},
  author={Jonah N. Choiniere and James M. Neenan and Lars Schmitz and David P. Ford and Kimberley E. J. Chapelle and Amy M. Balanoff and Justin S. Sipla and Justin A. Georgi and Stig A. Walsh and Mark A. Norell and Xing Xu and James M. Clark and Roger B. J. Benson},
  pages={610 - 613}
Revealing behavioral secrets in extinct species Extinct species had complex behaviors, just like modern species, but fossils generally reveal little of these details. New approaches that allow for the study of structures that relate directly to behavior are greatly improving our understanding of the lifestyles of extinct animals (see the Perspective by Witmer). Hanson et al. looked at three-dimensional scans of archosauromorph inner ears and found clear patterns relating these bones to complex… 

Contrasting Patterns of Sensory Adaptation in Living and Extinct Flightless Birds

The relative size of the endosseous cochlear duct revealed that the Upland Moa had a well-developed hearing sensitivity range, while the sensitivity of the kiwi, Kakapo, and aepyornithids was diminished.

Neurosensory anatomy of Varanopidae and its implications for early synapsid evolution

Computed tomography data reveal that the neuroanatomy of pelycosaur‐grade synapsids is far more complex than previously anticipated, and reconstructed neurosensory anatomy indicates that varanopids may have a much lower‐frequency hearing range compared to more derivedsynapsids.

Early evolution of diurnal habits in owls (Aves, Strigiformes) documented by a new and exquisitely preserved Miocene owl fossil from China

  • Zhiheng LiT. Stidham Zhonghe Zhou
  • Environmental Science, Biology
    Proceedings of the National Academy of Sciences of the United States of America
  • 2022
Analysis of the preserved eye bones supports a potential Miocene origin of nonnocturnal habits in a globally distributed owl group, which may be linked to steppe habitat expansion and climatic cooling in the late Miocene.

New digital braincase endocasts of two species of Desmatosuchus and neurocranial diversity within Aetosauria (Archosauria: Pseudosuchia)

Three new brain endocasts were developed through CT scan images, reconstructing the most complete endocranial casts known for an aetosaur, including the encephalon, cranial nerves, inner ear, and endocrinial vasculature, which exhibited some differences between both species of Desmatosuchus.

First evidence of Proganochelys quenstedtii (Testudinata) from the Plateosaurus bonebeds (Norian, Late Triassic) of Frick, Canton Aargau, Switzerland

Proganochelys quenstedtii represents the best-known stem turtle from the Late Triassic, with gross anatomical and internal descriptions of the shell, postcranial bones and skull based on several

New tools suggest a middle Jurassic origin for mammalian endothermy

We suggest that mammalian endothermy was established amongst Middle Jurassic crown mammals, through reviewing state‐of‐the‐art fossil and living mammal studies. This is considerably later than the

Revisiting Russell’s troodontid: autecology, physiology, and speculative tool use

The osteology, morphology, and ecology of the small theropod “Stenonychosaurus inequalis” are described in two papers, speculating on its life habits, brain power, vision, movement, and feeding habits.

Dinosaurs were night prowlers, study finds

Fossil scans reveal desert bird dinosaur was moonlight predator with excellent night vision and hearing Fossil scans reveal desert bird dinosaur was moonlight predator with excellent night vision and

Advances in state-of-the-art techniques uncover new insights on the evolutionary patterns of mammalian endothermy through time

1 School of Engineering andMaterials Science, QueenMary University of London, London, UK 2 Department of Palaeontology, Institute for Geosciences, University of Bonn, Bonn, Germany 3 School of Earth

Auditory and cross-modal attentional bias toward positive natural sounds: Behavioral and ERP evidence

The results of the experiments performed in the present study suggest that humans exhibit an attentional bias toward positive natural sounds.



The Evolution and Fossil History of Sensory Perception in Amniote Vertebrates

There is no definitive evidence for a relationship between sensory evolution and species diversification, but it cannot be excluded, however, that selection for improved sensing was partially triggered by biotic interactions, e.g., in the context of niche competition, whereas ecospace expansion might also have played an important role.

Inner ear anatomy is a proxy for deducing auditory capability and behaviour in reptiles and birds

The results suggest that ECD length can be used to predict mean hearing frequency and range in fossil taxa, and that this measure may also predict vocal complexity and large group sociality given comprehensive datasets.

Nocturnality in Dinosaurs Inferred from Scleral Ring and Orbit Morphology

It is shown that the eyes of Mesozoic archosaurs were adapted to all major types of diel activity (that is, nocturnal, diurnal, and cathemeral) and provide concrete evidence of temporal niche partitioning in the Mesozoics.

Audiogram, body mass, and basilar papilla length: correlations in birds and predictions for extinct archosaurs

It is suggested that hearing in large dinosaurs was restricted to low frequencies with a high-frequency limit below 3 Hz, based on the regression analysis of two significant correlations in living archosaurs.

Comparative analysis of vestibular ecomorphology in birds

The hypothesis that the lengths, streamlines and angles between the semicircular canals are related to body size, wing kinematics and flying style in birds is tested and a link between visual acuity and proportional size of the labyrinth among birds is tentatively indicated.

Evolution of olfaction in non-avian theropod dinosaurs and birds

The results show that, rather than decreasing, the importance of olfaction actually increased during early bird evolution, representing a previously unrecognized sensory enhancement.

A Short History of Nearly Every Sense-The Evolutionary History of Vertebrate Sensory Cell Types.

It is proposed that the evolution of novel cranial sense organs in vertebrates involved the redeployment of evolutionarily ancient sensory cell types for building larger and more complex sense organs.

Convergent evolution of bird-mammal shared characteristics for adapting to nocturnality

This work uses a newly developed molecular phyloecological approach to reconstruct the diel activity pattern of the common ancestors of living birds, and suggests that they had adaptations to nocturnality during their early evolution, which is remarkably similar to that of ancestral mammals.

Integrative and Comparative Biology

The surface area and sensory neuron density in olfactory organs of 95 species of moths and mammals are reported and it is found that approximately 12–14% of an Olfactory system’s surface area is devoted to chemosensors.

Evolution of the Vertebrate Ear

This chapter introduces some major concepts from the world of paleontology, starting with some of the techniques used to investigate fossils and a basic description of the embryonic origin of skull and braincase anatomy.