Project 4372: I. Escapa, A. Decombeix, E. Taylor, T. Taylor. 2010. Evolution and Relationships of the Conifer Seed Cone Telemachus: Evidence from the Triassic of Antarctica. International Journal of Plant Sciences. 171 (5):560-573.
Abstract
The discovery of 16 cylindrical conifer seed cones at the Estancia Vilán locality in the Late Jurassic Cañadón Calcáreo Formation of Chubut Province, Patagonia, Argentina, provides anatomically preserved specimens, allowing for the description of a second species of Pararaucaria (Cheirolepidiaceae). The new species, Pararaucaria delfueyoi, is similar in general features to the type species, Pararaucaria patagonica, but has a specifically diagnostic combination of characters that include cone size, seed number, features of histology, and seed size. Specimens are cylindrical with a narrow axis that bears helically arranged bract/scale complexes. The bract and scale diverge from the axis at ∼90° and separate from each other almost immediately. The ovuliferous scale extends toward the margin of the cone and then arches over to enclose two inverted nonwinged seeds within a pocket of tissue. Although the specimens are abraded such that the distal regions of the ovuliferous scales are not preserved, this combination of morphological and histological characters allows for the assignment of P. delfueyoi to the Cheirolepidiaceae with confidence. The co-occurrence of this cone with an undescribed species of Araucaria extends the geographic and stratigraphic ranges of this association, which previously has been known only from the Middle Jurassic of Santa Cruz Province of Patagonia. This extends the knowledge of anatomical variation among seed cones of Cheirolepidiaceae and improves our understanding of homology relationships for conifer seed cone structures.Read the article »
Article DOI: 10.1086/651948
Project DOI: 10.7934/P4372, http://dx.doi.org/10.7934/P4372
This project contains | Matrices |
---|---|
Download Project SDD File | Total scored cells: 1114 Total media associated with cells: 0 Total labels associated with cell media: 0 |
Characters | |
Total characters: 57 Total characters with associated media: 0 Total characters with media with labels: 0 Total character states: 157 Total character states with associated media: 0 Total character states with media with labels:0 Total unordered/ordered characters:57/0 |
Currently Viewing:
MorphoBank Project 4372
MorphoBank Project 4372
- Creation Date:
16 August 2022 - Publication Date:
18 September 2022 - Project views: 4869
- Matrix downloads: 2
This research
supported by
Authors' Institutions
- University of Kansas
Members
member name | taxa | specimens | media | chars | character
| cell scorings (scored, NPA, "-") | cell
| rules | ||||||
MorphoBank Curator Project Administrator | 26 | 1 | 1 | 57 | 0 | 0 | 1114 (1114, 0, 0) | 0 | 0 | 0 | ||||
Ignacio Escapa Full membership | 0 | 0 | 0 | 0 | 0 | 0 | 0 (0, 0, 0) | 0 | 0 | 0 |
Taxonomic Overview for Matrix 'M28983' (25 Taxa)
taxon | unscored cells |
scored cells |
no cell support |
NPA cells |
"-" cells | cell images | labels on cell images |
member access |
[1] † Aethophyllum stipulare Last Modified in 09/18/22 | 6 | 51 | 51 | 0 | 0 | 0 | 0 | 2 |
[2] † Barthelia furcata Last Modified in 09/18/22 | 5 | 54 | 52 | 0 | 0 | 0 | 0 | 2 |
[3] † Callistophyton poroxyloides Last Modified in 09/18/22 | 6 | 51 | 51 | 0 | 0 | 0 | 0 | 2 |
[4] † Concholepis harrisii Last Modified in 09/18/22 | 30 | 28 | 27 | 0 | 0 | 0 | 0 | 2 |
[5] † Cordaixylon dumusum Last Modified in 09/18/22 | 1 | 56 | 56 | 0 | 0 | 0 | 0 | 2 |
[6] † Dicranophyllum hallei Last Modified in 09/18/22 | 21 | 36 | 36 | 0 | 0 | 0 | 0 | 2 |
[7] † Dolomitia cittertiae Last Modified in 09/18/22 | 24 | 34 | 33 | 0 | 0 | 0 | 0 | 2 |
[8] † Emporia spp Last Modified in 09/18/22 | 0 | 58 | 57 | 0 | 0 | 0 | 0 | 2 |
[9] † Ernestiodendron filiciforme Last Modified in 09/18/22 | 8 | 49 | 49 | 0 | 0 | 0 | 0 | 2 |
[10] † Ferugliocladus spp Last Modified in 09/18/22 | 2 | 55 | 55 | 0 | 0 | 0 | 0 | 2 |
[11] † Genoites patagonica Last Modified in 09/18/22 | 19 | 38 | 38 | 0 | 0 | 0 | 0 | 2 |
[12] † Hanskerpia hamiltonensis Last Modified in 09/18/22 | 9 | 48 | 48 | 0 | 0 | 0 | 0 | 2 |
[13] † Majonica alpina Last Modified in 09/18/22 | 12 | 45 | 45 | 0 | 0 | 0 | 0 | 2 |
[14] † Mesoxylon priapii Last Modified in 09/18/22 | 1 | 56 | 56 | 0 | 0 | 0 | 0 | 2 |
[15] † Kungurodendron sharovii Last Modified in 09/18/22 | 12 | 46 | 45 | 0 | 0 | 0 | 0 | 2 |
[16] † Ortiseia spp Last Modified in 09/18/22 | 9 | 49 | 48 | 0 | 0 | 0 | 0 | 2 |
[17] † Otovicia hypnoides Last Modified in 09/18/22 | 2 | 58 | 55 | 0 | 0 | 0 | 0 | 2 |
[18] † Thucydia mahoningensis Last Modified in 09/18/22 | 1 | 57 | 56 | 0 | 0 | 0 | 0 | 2 |
[19] † Timanostrobus muravievii Last Modified in 09/18/22 | 13 | 44 | 44 | 0 | 0 | 0 | 0 | 2 |
[20] † Utrechtia floriniformis Last Modified in 09/18/22 | 14 | 45 | 43 | 0 | 0 | 0 | 0 | 2 |
[21] † Voltzia hexagona Last Modified in 09/18/22 | 14 | 43 | 43 | 0 | 0 | 0 | 0 | 2 |
[22] † Vojnovskyean plant Last Modified in 09/18/22 | 24 | 33 | 33 | 0 | 0 | 0 | 0 | 2 |
[23] † Telemachus elongatus-heidiphyllum elongatum Last Modified in 09/18/22 | 32 | 25 | 25 | 0 | 0 | 0 | 0 | 2 |
[24] † Swedenborgia cryptomerioides-podozamites schenkii Last Modified in 09/18/22 | 31 | 26 | 26 | 0 | 0 | 0 | 0 | 2 |
[25] † Parasciadopitys aequata-notophytum Last Modified in 09/18/22 | 28 | 29 | 29 | 0 | 0 | 0 | 0 | 2 |
Project views
type | number of views | Individual items viewed (where applicable) |
Total project views | 4869 | |
Matrix views | 269 | Matrix landing page (230 views); Matrix from Escapa et al 2010 (prepared by MorphoBank curators from original submission) (39 views); |
Specimen list | 515 | |
Taxon list | 2301 | |
Views for media list | 300 | |
Project overview | 348 | |
Media views | 948 | Media search (799 views); M846874 (149 views); |
Bibliography | 186 | |
Documents list | 2 |
Project downloads
type | number of downloads | Individual items downloaded (where applicable) |
Total downloads from project | 4 | |
Project downloads | 2 | |
Matrix downloads | 2 | Matrix from Escapa et al 2010 (prepared by MorphoBank curators from original submission) (2 downloads); |