An extinct Eocene taxon of the daisy family (Asteraceae): evolutionary, ecological and biogeographical implications

Barreda, Viviana; Palazzesi, Luis; Katinas, Liliana; Crisci, Jorge V.; Tellerı́a, Marı́a Cristina; Bremer, Kåre; Passala, Mauro G.; Bechis, Florencia; Corsolini, R.

doi:10.1093/aob/mcr240

Cited by 71 publications

(62 citation statements)

References 34 publications

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“…8. Asteraceae: The stem node of Asteraceae was set to a minimum age of 47.5 Ma (logMean: 1.5, logStdev: 1.0, median age: 51.98 Ma) based on fossils reported for the Ypresian of Patagonia (Barreda et al, 2010(Barreda et al, , 2012.…”

Section: Molecular Clock Analysesmentioning

confidence: 99%

Biogeographic Events Are Not Correlated with Diaspore Dispersal Modes in Boraginaceae

2017

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Long-distance dispersal seems to be the main biogeographic event responsible for intriguing distribution patterns in plant groups in which sister taxa are separated by thousands of kilometers of distance across oceans and continents. The biotic and abiotic mechanisms behind such dispersal events are poorly understood and many attempts have been made to explain how plants can manage to disperse and survive these long journeys. The biogeographic history of Boraginaceae, a subcosmopolitan plant family with many disjunct clades, is here addressed and analyzed in the context of the different dispersal modes exhibited by the species. The lack of a clear pattern between the main dispersal events in Boraginaceae and the phylogenetic distribution of the dispersal modes indicates that no single dispersal mechanism can be associated with the events of dispersal in the family. Moreover, adaptations to different dispersal agents and unassisted dispersal modes in some clades might have promoted the diversification of Boraginaceae in various habitats across several continents. Our study reveals that long-distance dispersal is a very complex process that needs to be analyzed in the context of climatic and environmental changes and the response of plants and their dispersal vectors to these variable conditions.

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Section: Molecular Clock Analysesmentioning

confidence: 99%

Biogeographic Events Are Not Correlated with Diaspore Dispersal Modes in Boraginaceae

2017

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“…This southern location is also congruent with the fossil record of the early diverging lineages of the family that includes Perezia. Several fossils of early branching lineages of Asteraceae have been found from the Paleogene in southwestern Argentina, the earliest from the middle Eocene (~50 MYA) (Barreda et al, 2010(Barreda et al, , 2012. The first and only records to date of fossil pollen of Nassauvieae are from the early Miocene found in Argentina along eastern coast of Patagonia.…”

Section: Historical Biogeography Of Pereziamentioning

confidence: 99%

Andean Origin and Diversification of the GenusPerezia, an Ancient Lineage of Asteraceae

Apodaca¹,

Crisci²,

Katinas³

2015

Smithsonian Contributions to Botany

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Smithsonian Institution Scholarly PressSmithsonian Institution Scholarly Press s m i t h s o n i a n c o n t r i b u t i o n s t o b o t a n y • n u m b e r 1 0 2 s m i t h s o n i a n c o n t r i b u t i o n s t o b o t a n y • n u m b e r 1 0 2 -Perezia tiene su mayor concentración en los Andes y pertenece a los linajes tempranos del árbol filogenético de Asteraceae (Compositae). En estudios previos en Perezia se propusieron varias líneas evolutivas para el género y áreas de origen alternativas. Se desarrolla aquí un análisis filogenético sobre la base de caracteres morfológicos para poner a prueba dichas hipótesis y se aplican los métodos biogeográficos de areas ancestrales y de dispersión-vicariancia. Los resultados del análisis filogenético muestran que Perezia es un taxón monofilético si incluye a las recientemente excluidas Perezia nutans y P. prenanthoides, y sustentan a la mayoría de las líneas evolutivas previamente propuestas. Los resultados biogeográficos sugieren a los Andes del sur como probable área ancestral de Perezia, con múltiples dispersiones. Sobre la base de la evidencia geológica, paleoclimatológica, y fósil, se propone que el ancestro de Perezia podría haber habitado las áreas por encima de los bosques templados del sur de los Andes durante el Terciario. PALABRAS CLAVE: Cambios climáticos, morfología, Mutisioideae, reconstrucción filogenética, América del Sur.Cover images, from left to right: Perezia multiflora subsp. multiflora (habit; photo by L. Katinas); Andes of southwestern Argentina (photo by M. Apodaca); Perezia recurvata (habit; photo by M. Bonifacino). Published by SMITHSONIAN INSTITUTION SCHOLARLY PRESS

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“…Plant migration across the Pacific Ocean seems to have occurred in both directions since the earliest records of Lophosoria and Mutisieae occur in South America (Eocene) whilst Embothrium occur earlier in southeast Australia (Barreda et al, 2012, M. Quattrochio pers. comm.…”

Section: Phytogeographic Links Between South-westmentioning

confidence: 99%

Coastal erosion reveals a potentially unique Oligocene and possible periglacial sequence at present-day sea level in Port Davey, remote South-West Tasmania

Macphail

Sharples²,

Wood³

et al. 2014

PPRST

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Cut-back of a sea-cliff at Hannant Inlet in remote South-West Tasmania has exposed Oligocene clays buried under Late Pleistocene "colluvium" from which abundant wood fragments protrude. The two units are separated by a transitional interval defined by mixed Oligocene and Pleistocene microfloras. Microfloras preserved in situ in the clay provide a link between floras in Tasmania and other Southern Hemisphere landmasses following onset of major glaciation in East Antarctica during the Eocene-Oligocene transition (c. 34 Ma). The Late Pleistocene "colluvium" preserves abundant fossil pollen of the shrub conifer genus Pherosphaera (al. Microstrobos). Assuming the parent plants had the same upper subalpine-alpine ecology as living Pherosphaera hookeriana, the microflora provides evidence for cold, wet conditions in the Port Davey lowlands during a low sea-level stand. The same data highlight the failure of Pherosphaera to regain its Pleistocene distribution during the Postglacial period. Our data are inconclusive whether Late Pleistocene conditions in Hannant Inlet were periglacial, i.e., the Oligocene sediments were turbated by freeze-thaw processes, or have been reworked by fluvial processes into the Pleistocene "colluvium". Nevertheless, the inferred cold-climate is consistent with the former hypothesis. The sequence is sealed under cross-bedded coarse quartzite gravels of presumed Last Glacial Stage age.

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An extinct Eocene taxon of the daisy family (Asteraceae): evolutionary, ecological and biogeographical implications

Cited by 71 publications

References 34 publications

Biogeographic Events Are Not Correlated with Diaspore Dispersal Modes in Boraginaceae

Biogeographic Events Are Not Correlated with Diaspore Dispersal Modes in Boraginaceae

Andean Origin and Diversification of the GenusPerezia, an Ancient Lineage of Asteraceae

Coastal erosion reveals a potentially unique Oligocene and possible periglacial sequence at present-day sea level in Port Davey, remote South-West Tasmania

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