The endocranial cavity of oviraptorosaur dinosaurs and the increasingly complex, deep history of the avian brain

Amy Balanoff, Mark A. Norell, Aneila V.C. Hogan, Gaberiel Bever

Research output: Contribution to journalArticle

Abstract

Unraveling the origins of the character complexes diagnosing major crown clades is one of the greatest challenges in evolutionary biology. These origination events tend to optimize along extraordinarily long stem lineages where the comparative biology of extant lineages is relatively weak in its heuristic power. Here we add to a growing paleontological literature on the evolutionary origins of the modern avi an brain by describing the endocranial casts of two oviraptorosaur dinosaurs, Citipati osmolskae and Khaan mckennai. These fossil data confirm the antiquity of several avian features, including the expanded cerebrum. They also extend our appreciation of both the inherent variability in the brain-skull relationship along the avian stem and the dynamic nature of these crown characters in the earliest history of their expression.

Original languageEnglish (US)
Pages (from-to)125-135
Number of pages11
JournalBrain, Behavior and Evolution
Volume91
Issue number3
DOIs
StatePublished - Aug 1 2018

Fingerprint

Dinosaurs
Crowns
Brain
Cerebrum
Skull
History

Keywords

  • Aves
  • Cerebellum
  • Endocast
  • Forebrain
  • Theropoda

ASJC Scopus subject areas

  • Developmental Neuroscience
  • Behavioral Neuroscience

Cite this

The endocranial cavity of oviraptorosaur dinosaurs and the increasingly complex, deep history of the avian brain. / Balanoff, Amy; Norell, Mark A.; Hogan, Aneila V.C.; Bever, Gaberiel.

In: Brain, Behavior and Evolution, Vol. 91, No. 3, 01.08.2018, p. 125-135.

Research output: Contribution to journalArticle

@article{e9b8659b70b94fac97c936b6fabc242c,
title = "The endocranial cavity of oviraptorosaur dinosaurs and the increasingly complex, deep history of the avian brain",
abstract = "Unraveling the origins of the character complexes diagnosing major crown clades is one of the greatest challenges in evolutionary biology. These origination events tend to optimize along extraordinarily long stem lineages where the comparative biology of extant lineages is relatively weak in its heuristic power. Here we add to a growing paleontological literature on the evolutionary origins of the modern avi an brain by describing the endocranial casts of two oviraptorosaur dinosaurs, Citipati osmolskae and Khaan mckennai. These fossil data confirm the antiquity of several avian features, including the expanded cerebrum. They also extend our appreciation of both the inherent variability in the brain-skull relationship along the avian stem and the dynamic nature of these crown characters in the earliest history of their expression.",
keywords = "Aves, Cerebellum, Endocast, Forebrain, Theropoda",
author = "Amy Balanoff and Norell, {Mark A.} and Hogan, {Aneila V.C.} and Gaberiel Bever",
year = "2018",
month = "8",
day = "1",
doi = "10.1159/000488890",
language = "English (US)",
volume = "91",
pages = "125--135",
journal = "Brain, Behavior and Evolution",
issn = "0006-8977",
publisher = "S. Karger AG",
number = "3",

}

TY - JOUR

T1 - The endocranial cavity of oviraptorosaur dinosaurs and the increasingly complex, deep history of the avian brain

AU - Balanoff, Amy

AU - Norell, Mark A.

AU - Hogan, Aneila V.C.

AU - Bever, Gaberiel

PY - 2018/8/1

Y1 - 2018/8/1

N2 - Unraveling the origins of the character complexes diagnosing major crown clades is one of the greatest challenges in evolutionary biology. These origination events tend to optimize along extraordinarily long stem lineages where the comparative biology of extant lineages is relatively weak in its heuristic power. Here we add to a growing paleontological literature on the evolutionary origins of the modern avi an brain by describing the endocranial casts of two oviraptorosaur dinosaurs, Citipati osmolskae and Khaan mckennai. These fossil data confirm the antiquity of several avian features, including the expanded cerebrum. They also extend our appreciation of both the inherent variability in the brain-skull relationship along the avian stem and the dynamic nature of these crown characters in the earliest history of their expression.

AB - Unraveling the origins of the character complexes diagnosing major crown clades is one of the greatest challenges in evolutionary biology. These origination events tend to optimize along extraordinarily long stem lineages where the comparative biology of extant lineages is relatively weak in its heuristic power. Here we add to a growing paleontological literature on the evolutionary origins of the modern avi an brain by describing the endocranial casts of two oviraptorosaur dinosaurs, Citipati osmolskae and Khaan mckennai. These fossil data confirm the antiquity of several avian features, including the expanded cerebrum. They also extend our appreciation of both the inherent variability in the brain-skull relationship along the avian stem and the dynamic nature of these crown characters in the earliest history of their expression.

KW - Aves

KW - Cerebellum

KW - Endocast

KW - Forebrain

KW - Theropoda

UR - http://www.scopus.com/inward/record.url?scp=85051743339&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85051743339&partnerID=8YFLogxK

U2 - 10.1159/000488890

DO - 10.1159/000488890

M3 - Article

C2 - 30099460

AN - SCOPUS:85051743339

VL - 91

SP - 125

EP - 135

JO - Brain, Behavior and Evolution

JF - Brain, Behavior and Evolution

SN - 0006-8977

IS - 3

ER -