The University of Southampton
University of Southampton Institutional Repository

Data from: Sustained miniaturization and anatomical innovation in the dinosaurian ancestors of birds

Data from: Sustained miniaturization and anatomical innovation in the dinosaurian ancestors of birds
Data from: Sustained miniaturization and anatomical innovation in the dinosaurian ancestors of birds
Recent discoveries have highlighted the dramatic evolutionary transformation of massive, ground-dwelling theropod dinosaurs into light, volant birds. Here, we apply Bayesian approaches (originally developed for inferring geographic spread and rates of molecular evolution in viruses) in a different context: to infer size changes and rates of anatomical innovation (across up to 1549 skeletal characters) in fossils. These approaches identify two drivers underlying the dinosaur-bird transition. The theropod lineage directly ancestral to birds undergoes sustained miniaturization across 50 million years and at least 12 consecutive branches (internodes) and evolves skeletal adaptations four times faster than other dinosaurs. The distinct, prolonged phase of miniaturization along the bird stem would have facilitated the evolution of many novelties associated with small body size, such as reorientation of body mass, increased aerial ability, and paedomorphic skulls with reduced snouts but enlarged eyes and brains.,Dataset 1: Character ListCharacter list for Dataset 1, with references, in Word (doc) formatDryad1-characterList.docDataset 1: TerminalTaxaTerminal taxa in Dataset 1, with sources of anatomical information and references, in Word (doc) formatDryad2-TerminalTaxa.docStratigraphic and Size Data for Datasets 1 and 2Stratigraphic and size data for all taxa (from Datasets 1 and 2) in Excel (xls) formatDryad3-StratigraphicAndSize.xlsDataset 1 in PAUP formatDataset 1 in nexus format with PAUP commandsDryad4-paup.txtDataset 1 in BEAST formatDataset 1 with size and stratigraphic data in BEAST xml format (plain text file).Dryad5-Dataset1_BEAST.xmlDataset 2 in BEAST formatDataset 2 with size and stratigraphic data in BEAST xml format (plain text file).Dryad6_Dataset2_BEAST.xml,
DRYAD
Cau, Andrea
664e02a9-f4ff-460c-b5ff-2c4c9cc41247
Dyke, Gareth J.
600ca61e-b40b-4c86-b8ae-13be4e331e94
Lee, Michael S. Y.
c72ce693-b93c-4c6a-87b1-872cc58f626d
Naish, Darren
aa6bd7f8-86e4-4965-bd94-20b1573b194d
Cau, Andrea
664e02a9-f4ff-460c-b5ff-2c4c9cc41247
Dyke, Gareth J.
600ca61e-b40b-4c86-b8ae-13be4e331e94
Lee, Michael S. Y.
c72ce693-b93c-4c6a-87b1-872cc58f626d
Naish, Darren
aa6bd7f8-86e4-4965-bd94-20b1573b194d

Cau, Andrea and Lee, Michael S. Y. (2015) Data from: Sustained miniaturization and anatomical innovation in the dinosaurian ancestors of birds. DRYAD doi:10.5061/dryad.jm6pj [Dataset]

Record type: Dataset

Abstract

Recent discoveries have highlighted the dramatic evolutionary transformation of massive, ground-dwelling theropod dinosaurs into light, volant birds. Here, we apply Bayesian approaches (originally developed for inferring geographic spread and rates of molecular evolution in viruses) in a different context: to infer size changes and rates of anatomical innovation (across up to 1549 skeletal characters) in fossils. These approaches identify two drivers underlying the dinosaur-bird transition. The theropod lineage directly ancestral to birds undergoes sustained miniaturization across 50 million years and at least 12 consecutive branches (internodes) and evolves skeletal adaptations four times faster than other dinosaurs. The distinct, prolonged phase of miniaturization along the bird stem would have facilitated the evolution of many novelties associated with small body size, such as reorientation of body mass, increased aerial ability, and paedomorphic skulls with reduced snouts but enlarged eyes and brains.,Dataset 1: Character ListCharacter list for Dataset 1, with references, in Word (doc) formatDryad1-characterList.docDataset 1: TerminalTaxaTerminal taxa in Dataset 1, with sources of anatomical information and references, in Word (doc) formatDryad2-TerminalTaxa.docStratigraphic and Size Data for Datasets 1 and 2Stratigraphic and size data for all taxa (from Datasets 1 and 2) in Excel (xls) formatDryad3-StratigraphicAndSize.xlsDataset 1 in PAUP formatDataset 1 in nexus format with PAUP commandsDryad4-paup.txtDataset 1 in BEAST formatDataset 1 with size and stratigraphic data in BEAST xml format (plain text file).Dryad5-Dataset1_BEAST.xmlDataset 2 in BEAST formatDataset 2 with size and stratigraphic data in BEAST xml format (plain text file).Dryad6_Dataset2_BEAST.xml,

This record has no associated files available for download.

More information

Published date: 1 January 2015

Identifiers

Local EPrints ID: 448922
URI: http://eprints.soton.ac.uk/id/eprint/448922
PURE UUID: 11c48908-97be-4be2-b2de-8102b9d1a646

Catalogue record

Date deposited: 10 May 2021 16:33
Last modified: 15 Dec 2021 02:21

Export record

Altmetrics

Contributors

Creator: Andrea Cau
Contributor: Gareth J. Dyke
Creator: Michael S. Y. Lee
Contributor: Darren Naish

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×