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 language | English (US) |
|---|---|
| Pages (from-to) | 125-135 |
| Number of pages | 11 |
| Journal | Brain, Behavior and Evolution |
| Volume | 91 |
| Issue number | 3 |
| DOIs | |
| State | Published - Aug 1 2018 |
Fingerprint
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 journal › Article
}
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 -