Tip-dating and the origin of Telluraves
Copyright © 2018 Elsevier Inc. All rights reserved..
Despite a relatively vast accumulation of molecular data, the timing of diversification of modern bird lineages remains elusive. Accurate dating of the origination of Telluraves-a clade of birds defined by their arboreality-is of particular interest, as it contains the most species-rich avian group, the passerines. Historically, neontological studies have estimated a Cretaceous origin for the group, but more recent studies have recovered Cenozoic dates, closer to the oldest known fossils for the group. We employ total-evidence dating to estimate divergence times that are expected to be both less sensitive to prior assumptions and more accurate. Specifically, we use a large collection of morphological character data from arboreal bird fossils, along with combined molecular sequence and morphological character data from extant taxa. Our analyses recover a Late Cretaceous origin for crown Telluraves, with a few lineages crossing the K-Pg boundary. Following the K-Pg boundary, our results show the group underwent rapid diversification, likely benefiting from increased ecological opportunities in the aftermath of the extinction event. We find very little confidence for the precise topological placement of many extinct taxa, possibly due to rapid diversification, paucity of character data, and rapid morphological differentiation during the early history of the group.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2019 |
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| Erschienen: |
2019 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:131 |
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| Enthalten in: |
Molecular phylogenetics and evolution - 131(2019) vom: 01. Feb., Seite 55-63 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Crouch, Nicholas M A [VerfasserIn] |
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| Links: |
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| Themen: |
Divergence times |
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| Anmerkungen: |
Date Completed 22.04.2019 Date Revised 22.04.2019 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1016/j.ympev.2018.10.006 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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NLM290187133 |
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| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a Copyright © 2018 Elsevier Inc. All rights reserved. | ||
| 520 | |a Despite a relatively vast accumulation of molecular data, the timing of diversification of modern bird lineages remains elusive. Accurate dating of the origination of Telluraves-a clade of birds defined by their arboreality-is of particular interest, as it contains the most species-rich avian group, the passerines. Historically, neontological studies have estimated a Cretaceous origin for the group, but more recent studies have recovered Cenozoic dates, closer to the oldest known fossils for the group. We employ total-evidence dating to estimate divergence times that are expected to be both less sensitive to prior assumptions and more accurate. Specifically, we use a large collection of morphological character data from arboreal bird fossils, along with combined molecular sequence and morphological character data from extant taxa. Our analyses recover a Late Cretaceous origin for crown Telluraves, with a few lineages crossing the K-Pg boundary. Following the K-Pg boundary, our results show the group underwent rapid diversification, likely benefiting from increased ecological opportunities in the aftermath of the extinction event. We find very little confidence for the precise topological placement of many extinct taxa, possibly due to rapid diversification, paucity of character data, and rapid morphological differentiation during the early history of the group | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Divergence times | |
| 650 | 4 | |a Fossils | |
| 650 | 4 | |a Phylogenetics | |
| 650 | 4 | |a Telluraves | |
| 650 | 4 | |a Tip dating | |
| 700 | 1 | |a Ramanauskas, Karolis |e verfasserin |4 aut | |
| 700 | 1 | |a Igić, Boris |e verfasserin |4 aut | |
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