Project 3613: R. A. Stockey, G. W. Rothwell. 2020. Diversification of crown group Araucaria : the role of Araucaria famii sp. nov. in the Late Cretaceous (Campanian) radiation of Araucariaceae in the Northern Hemisphere. American Journal of Botany. 107 (7):1072-1093.
Abstract
PREMISE OF THE STUDY: Exceptional anatomical preservation of a fossil araucarian seed cone from a marine carbonate concretion from Vancouver Island, British Columbia, Canada provides unusually complete evidence for cone structure including, seeds, megagametophytes, microgametophytes, and embryos of an Upper Cretaceous (Campanian) species of Araucaria, providing important new insights into the structure and relationships of Cretaceous Northern Hemisphere Araucariaceae.METHODS: The cone was studied from serial thin sections prepared by the coal ball peel technique. Phylogenetic analysis using a modified morphological matrix with both discrete and continuous characters was performed using TNT version 1.5.
KEY RESULTS: The nearly spherical cone, 6 X 6 cm in diameter, has helically arranged cone-scale complexes, consisting of a large bract with an upturned tip and a small, fleshy ovuliferous scale. Vascularization of the cone-scale complex is single at its origin. Widely winged bracts, with a bulging base, contain numerous vascular bundles, interspersed with transfusion tissue, and a large number of resin canals. Seeds are ovoid, 1.2 cm long, 1.2 cm in diameter. Nucellus is free from the integument, except at its base, with a convoluted apex, containing possible pollen tubes, megagametophytes, and mature cellular embryos occur in several seeds.
CONCLUSIONS: This small cone, with attached, imbricate leaves, wide bracts and unusually large seeds, most closely resembles those of Araucaria Section Eutacta. Width and continuity of secondary xylem in the cone axis, and intact cone-scale complexes indicate that this cone probably did not disarticulate readily at maturity. When added to a modified, previously published phylogenetic analysis, Araucaria famii sp. nov. enhances our understanding the Cretacous radiation of Northern Hemisphere Araucaria Section Eutacta.
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Article DOI: 10.1002/ajb2.1505
Project DOI: 10.7934/P3613, http://dx.doi.org/10.7934/P3613
This project contains | Matrices |
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Download Project SDD File | Total scored cells: 2850 Total media associated with cells: 0 Total labels associated with cell media: 0 |
Characters | |
Total characters: 63 Total characters with associated media: 0 Total characters with media with labels: 0 Total character states: 134 Total character states with associated media: 0 Total character states with media with labels:0 Total unordered/ordered characters:63/0 |
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MorphoBank Project 3613
MorphoBank Project 3613
- Creation Date:
12 January 2020 - Publication Date:
31 August 2020 - Project views: 10059
- Matrix downloads: 3
Authors' Institutions
- Ohio University
- Oregon State University
Members
member name | taxa | specimens | media | chars | character
| cell scorings (scored, NPA, "-") | cell
| rules | ||||||
Gar Rothwell Project Administrator | 49 | 0 | 0 | 63 | 0 | 0 | 2850 (2328, 0, 522) | 0 | 0 | 0 |
Taxonomic Overview for Matrix 'M26418' (49 Taxa)
taxon | unscored cells |
scored cells |
no cell support |
NPA cells |
"-" cells | cell images | labels on cell images |
member access |
[1] Cunninghamia lanceolata Last Modified in 01/13/20 | 0 | 54 | 53 | 0 | 10 | 0 | 0 | 1 |
[2] Taiwania cryptomerioides Last Modified in 01/13/20 | 2 | 56 | 52 | 0 | 9 | 0 | 0 | 1 |
[3] Cupressus sempervirens Last Modified in 01/13/20 | 2 | 55 | 51 | 0 | 10 | 0 | 0 | 1 |
[4] Cupressus sargentii Last Modified in 01/13/20 | 2 | 55 | 51 | 0 | 10 | 0 | 0 | 1 |
[5] Xanthocyparis vietnamensis Last Modified in 01/13/20 | 1 | 55 | 51 | 0 | 11 | 0 | 0 | 1 |
[6] Podocarpus latifolius Last Modified in 01/13/20 | 3 | 50 | 49 | 0 | 11 | 0 | 0 | 1 |
[7] Podocarpus macrophyllus Last Modified in 01/13/20 | 2 | 50 | 49 | 0 | 12 | 0 | 0 | 1 |
[8] Dacrycarpus dacrydioides Last Modified in 01/13/20 | 3 | 51 | 49 | 0 | 11 | 0 | 0 | 1 |
[9] Sciadopitys verticillata Last Modified in 01/13/20 | 1 | 57 | 53 | 0 | 9 | 0 | 0 | 1 |
[10] Araucaria araucana Last Modified in 01/13/20 | 0 | 50 | 49 | 0 | 14 | 0 | 0 | 1 |
[11] Araucaria angustifolia Last Modified in 01/13/20 | 0 | 50 | 49 | 0 | 14 | 0 | 0 | 1 |
[12] Araucaria bidwillii Last Modified in 01/13/20 | 0 | 51 | 50 | 0 | 13 | 0 | 0 | 1 |
[13] Araucaria hunsteinii Last Modified in 01/13/20 | 0 | 51 | 50 | 0 | 13 | 0 | 0 | 1 |
[14] Araucaria bernieri Last Modified in 01/13/20 | 0 | 51 | 50 | 0 | 13 | 0 | 0 | 1 |
[15] Araucaria biramulata Last Modified in 01/13/20 | 0 | 51 | 50 | 0 | 13 | 0 | 0 | 1 |
[16] Araucaria columnaris Last Modified in 01/13/20 | 0 | 51 | 50 | 0 | 13 | 0 | 0 | 1 |
[17] Araucaria cunninghamii Last Modified in 01/13/20 | 0 | 51 | 50 | 0 | 13 | 0 | 0 | 1 |
[18] Araucaria heterophylla Last Modified in 01/13/20 | 0 | 51 | 50 | 0 | 13 | 0 | 0 | 1 |
[19] Araucaria humboldtensis Last Modified in 01/13/20 | 0 | 51 | 50 | 0 | 13 | 0 | 0 | 1 |
[20] Araucaria laubenfelsii Last Modified in 01/13/20 | 0 | 51 | 50 | 0 | 13 | 0 | 0 | 1 |
[21] Araucaria luxurians Last Modified in 01/13/20 | 0 | 51 | 50 | 0 | 13 | 0 | 0 | 1 |
[22] Araucaria montana Last Modified in 01/13/20 | 0 | 51 | 50 | 0 | 13 | 0 | 0 | 1 |
[23] Araucaria muelleri Last Modified in 01/13/20 | 0 | 51 | 50 | 0 | 13 | 0 | 0 | 1 |
[24] Araucaria nemorosa Last Modified in 01/13/20 | 0 | 51 | 50 | 0 | 13 | 0 | 0 | 1 |
[25] Araucaria rulei Last Modified in 01/13/20 | 0 | 51 | 50 | 0 | 13 | 0 | 0 | 1 |
[26] Araucaria schmidii Last Modified in 01/13/20 | 2 | 51 | 49 | 0 | 12 | 0 | 0 | 1 |
[27] Araucaria scopulorum Last Modified in 01/13/20 | 0 | 51 | 50 | 0 | 13 | 0 | 0 | 1 |
[28] Araucaria subulata Last Modified in 01/13/20 | 0 | 51 | 50 | 0 | 13 | 0 | 0 | 1 |
[29] Agathis robusta Last Modified in 01/13/20 | 0 | 54 | 52 | 0 | 11 | 0 | 0 | 1 |
[30] Agathis australis Last Modified in 01/13/20 | 1 | 56 | 52 | 0 | 10 | 0 | 0 | 1 |
[31] Agathis dammara Last Modified in 01/13/20 | 0 | 55 | 52 | 0 | 11 | 0 | 0 | 1 |
[32] Agathis atropurpurea Last Modified in 01/13/20 | 0 | 55 | 52 | 0 | 11 | 0 | 0 | 1 |
[33] Agathis borneensis Last Modified in 01/13/20 | 0 | 54 | 52 | 0 | 11 | 0 | 0 | 1 |
[34] Agathis lanceolata Last Modified in 01/13/20 | 1 | 55 | 52 | 0 | 10 | 0 | 0 | 1 |
[35] Agathis macrophylla Last Modified in 01/13/20 | 1 | 55 | 52 | 0 | 10 | 0 | 0 | 1 |
[36] Agathis microstachya Last Modified in 01/13/20 | 0 | 54 | 52 | 0 | 11 | 0 | 0 | 1 |
[37] Agathis montana Last Modified in 01/13/20 | 1 | 53 | 52 | 0 | 10 | 0 | 0 | 1 |
[38] Agathis moorei Last Modified in 01/13/20 | 1 | 54 | 52 | 0 | 10 | 0 | 0 | 1 |
[39] Agathis ovata Last Modified in 01/13/20 | 1 | 54 | 52 | 0 | 10 | 0 | 0 | 1 |
[40] † Araucaria famii Last Modified in 08/31/20 | 19 | 37 | 37 | 0 | 7 | 0 | 0 | 1 |
[41] Wollemia nobilis Last Modified in 01/13/20 | 0 | 56 | 52 | 0 | 11 | 0 | 0 | 1 |
[42] † Araucaria mirabilis Last Modified in 08/31/20 | 24 | 33 | 31 | 0 | 8 | 0 | 0 | 1 |
[43] † Araucarites bindrabunensis Last Modified in 08/31/20 | 38 | 19 | 19 | 0 | 6 | 0 | 0 | 1 |
[44] † Araucaria sphaerocarpa Last Modified in 08/31/20 | 35 | 22 | 22 | 0 | 6 | 0 | 0 | 1 |
[45] † Araucaria nipponensis Last Modified in 08/31/20 | 35 | 25 | 22 | 0 | 6 | 0 | 0 | 1 |
[46] † Araucaria vulgaris Last Modified in 08/31/20 | 36 | 22 | 21 | 0 | 6 | 0 | 0 | 1 |
[47] † Araucaria brownii Last Modified in 08/31/20 | 39 | 19 | 19 | 0 | 5 | 0 | 0 | 1 |
[48] Wairarapaia mildenhallii Last Modified in 01/13/20 | 39 | 20 | 20 | 0 | 4 | 0 | 0 | 1 |
[49] Emwadea microcarpa Last Modified in 01/13/20 | 30 | 26 | 26 | 0 | 7 | 0 | 0 | 1 |
Project views
type | number of views | Individual items viewed (where applicable) |
Total project views | 10059 | |
Project overview | 910 | |
Matrix views | 726 | TNT matrix (118 views); Matrix landing page (608 views); |
Media views | 2299 | Media search (1932 views); M693674 (367 views); |
Views for media list | 714 | |
Specimen list | 1192 | |
Taxon list | 3758 | |
Bibliography | 457 | |
Documents list | 3 |
Project downloads
type | number of downloads | Individual items downloaded (where applicable) |
Total downloads from project | 99 | |
Project downloads | 96 | |
Matrix downloads | 3 | TNT matrix (3 downloads); |