Project 2506: N. A. Jud, M. A. Gandolfo, A. Iglesias, P. Wilf. 2017. Flowering after disaster: Early Danian buckthorn (Rhamnaceae) flowers and leaves from Patagonia. PLOS ONE. 12 (5):e0176164.
Abstract
Southern-Hemisphere terrestrial communities from the early Paleocene are poorly known, but recent work on Danian plant fossils from the Salamanca Formation in Chubut Province, Argentina are providing critical data on earliest Paleocene floras. The fossils described here come from a site in the Salamanca Formation dating to ca. 1 million years or less after the end-Cretaceous extinction event; they are the first fossil flowers reported from the Danian of South America, and possible the entire Southern Hemisphere. They are compressions and impressions in flat-laminated light gray shale, and they belong to the family Rhamnaceae (buckthorns). Flowers of Notiantha grandensis gen. et sp. nov. are pentamerous, with distinctly keeled calyx lobes projecting from the hypanthium, clawed and cucullate emarginate petals, antepetalous stamens, and a pentagonal floral disk that fills the hypanthium. Their phylogenetic position was evaluated using a molecular scaffold approach combined with morphological data. Results indicate that the flowers are most like those of extant ziziphoid Rhamnaceae. The associated leaves, assigned to Suessenia grandensis gen. et sp. nov. are simple and ovate, with serrate margins and three acrodromous basal veins. They conform to the distinctive leaves of some extant Rhamnaceae in the ziziphoid and ampelozizyphoid clades. These fossils provide the first unequivocal megafossil evidence of Rhamnaceae in the Southern Hemisphere, demonstrating that Rhamnaceae expanded beyond the tropics by the earliest Paleocene. Given previous reports of rhamnaceous pollen in the late Paleogene and Neogene of Antarctica and southern Australia, this new occurrence increases the possibility of high-latitude dispersal of this family between South America and Australia via Antarctica during the Cenozoic.Read the article »
Article DOI: 10.1371/journal.pone.0176164
Project DOI: 10.7934/P2506, http://dx.doi.org/10.7934/P2506
This project contains | Matrices |
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Download Project SDD File | Total scored cells: 760 Total media associated with cells: 0 Total labels associated with cell media: 0 |
Characters | |
Total characters: 30 Total characters with associated media: 0 Total characters with media with labels: 0 Total character states: 135 Total character states with associated media: 0 Total character states with media with labels:0 Total unordered/ordered characters:30/0 |
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MorphoBank Project 2506
MorphoBank Project 2506
- Creation Date:
08 August 2016 - Publication Date:
09 June 2017 - Project views: 19628
- Media downloads: 1
- Matrix downloads: 14
This research
supported by
Authors' Institutions
- Cornell University
- Pennsylvania State University
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)
- Universidad Nacional del Comahue
Members
member name | taxa | specimens | media | chars | character
| cell scorings (scored, NPA, "-") | cell
| rules | ||||||
Nathan Jud Project Administrator | 31 | 1 | 1 | 30 | 0 | 0 | 760 (756, 0, 4) | 0 | 0 | 0 |
Taxonomic Overview for Matrix 'M24392' (25 Taxa)
taxon | unscored cells |
scored cells |
no cell support |
NPA cells |
"-" cells | cell images | labels on cell images |
member access |
[1] Vitis Last Modified in 01/06/17 | 2 | 28 | 28 | 0 | 0 | 0 | 0 | 1 |
[2] Mortonia Last Modified in 01/06/17 | 3 | 28 | 27 | 0 | 0 | 0 | 0 | 1 |
[3] Ampelozizyphus Last Modified in 01/06/17 | 0 | 30 | 30 | 0 | 0 | 0 | 0 | 1 |
[4] Bathiorhamnus Last Modified in 01/06/17 | 1 | 42 | 29 | 0 | 0 | 0 | 0 | 1 |
[5] Ventilago Last Modified in 01/06/17 | 1 | 33 | 29 | 0 | 0 | 0 | 0 | 1 |
[6] Berchemia Last Modified in 01/06/17 | 1 | 30 | 29 | 0 | 0 | 0 | 0 | 1 |
[7] Sageretia Last Modified in 01/06/17 | 1 | 30 | 29 | 0 | 0 | 0 | 0 | 1 |
[8] Rhamnus Last Modified in 01/06/17 | 0 | 36 | 30 | 0 | 0 | 0 | 0 | 1 |
[9] Reynosia Last Modified in 01/06/17 | 1 | 31 | 29 | 0 | 0 | 0 | 0 | 1 |
[10] Krugiodendron Last Modified in 01/06/17 | 5 | 24 | 23 | 0 | 2 | 0 | 0 | 1 |
[11] Condalia Last Modified in 01/06/17 | 0 | 31 | 30 | 0 | 0 | 0 | 0 | 1 |
[12] Karwinskia Last Modified in 01/06/17 | 1 | 29 | 29 | 0 | 0 | 0 | 0 | 1 |
[13] Pomaderris Last Modified in 01/06/17 | 2 | 30 | 28 | 0 | 0 | 0 | 0 | 1 |
[14] Adolphia Last Modified in 01/06/17 | 4 | 27 | 26 | 0 | 0 | 0 | 0 | 1 |
[15] Colletia Last Modified in 01/06/17 | 9 | 19 | 19 | 0 | 2 | 0 | 0 | 1 |
[16] Noltea Last Modified in 01/06/17 | 1 | 29 | 29 | 0 | 0 | 0 | 0 | 1 |
[17] Ceanothus Last Modified in 01/06/17 | 0 | 33 | 30 | 0 | 0 | 0 | 0 | 1 |
[18] Colubrina Last Modified in 01/06/17 | 2 | 29 | 28 | 0 | 0 | 0 | 0 | 1 |
[19] Gouania Last Modified in 01/06/17 | 1 | 31 | 29 | 0 | 0 | 0 | 0 | 1 |
[20] Helinus Last Modified in 01/06/17 | 1 | 29 | 29 | 0 | 0 | 0 | 0 | 1 |
[21] Sarcomphalus Last Modified in 01/06/17 | 1 | 33 | 29 | 0 | 0 | 0 | 0 | 1 |
[22] Hovenia Last Modified in 01/06/17 | 1 | 31 | 29 | 0 | 0 | 0 | 0 | 1 |
[23] Paliurus Last Modified in 01/06/17 | 0 | 35 | 30 | 0 | 0 | 0 | 0 | 1 |
[24] Ziziphus Last Modified in 01/06/17 | 1 | 32 | 29 | 0 | 0 | 0 | 0 | 1 |
[25] † Notiantha grandensis Last Modified in 06/09/17 | 5 | 26 | 25 | 0 | 0 | 0 | 0 | 1 |
Project views
type | number of views | Individual items viewed (where applicable) |
Total project views | 19628 | |
Project overview | 2082 | |
Media views | 3981 | Media search (3120 views); M451597 (861 views); |
Matrix views | 1488 | Matrix landing page (1313 views); RhamnaceaeF&L (175 views); |
Taxon list | 8353 | |
Views for media list | 1086 | |
Bibliography | 844 | |
Specimen list | 1790 | |
Documents list | 4 |
Project downloads
type | number of downloads | Individual items downloaded (where applicable) |
Total downloads from project | 226 | |
Media downloads | 1 | M451597 (1 download); |
Project downloads | 211 | |
Matrix downloads | 14 | RhamnaceaeF&L (14 downloads); |