Project 2387: F. Herrera, G. Shi, P. Knopf, A. B. Leslie, N. Ichinnorov, M. Takahashi, P. R. Crane, P. S. Herendeen. 2017. Cupressaceae Conifers from the Early Cretaceous of Mongolia. International Journal of Plant Sciences. 178 (1):19-41.
Abstract
Premise of research. The two living species of Cunninghamia form a clade that is sister to the rest of the Cupressaceae sensu lato, within which the monotypic extant genus Taiwania is sister to all Cupressaceae except Cunninghamia. Seed cones of both Cunninghamia and Taiwania bear helically arranged bract-scale complexes, but a free ovuliferous scale is present only in Cunninghamia. Here, we describe two new genera of fossil seed cones similar to those of Cunninghamia and Taiwania.Methodology. Early Cretaceous (Aptian-Albian) bulk lignite samples collected from the Tevshiin Govi locality were disaggregated in water, cleaned with hydrochloric and hydrofluoric acids, washed, and dried in air.Pivotal results. Pentakonos gen. nov. has seed cones that are up to 7 mm long with ca. 25–30 helically arranged, papery bract-scale complexes that have minute teeth. Adaxially, the free tip of the membranous ovuliferous scale is denticulate, and the scale bears five small, thin-winged seeds. Pentakonos adds to the diverse Cunninghamia-like seed cones known from the early fossil record of Cupressaceae. Seed cones of Stutzeliastrobus gen. nov. are terminal and single on leafy shoots with helically arranged falcate scale leaves. Seedcones are up to 32 mm long with ca. 30–70 helically arranged woody bract-scale complexes that lack a conspicuous, free ovuliferous scale. Morphological features of Stutzeliastrobus suggest a relationship with Taiwania, but the bract-scale complexes bear up to four inverted winged seeds rather than the two commonly seen in living Taiwania.Conclusions. Together with previously described fossils, Pentakonos and Stutzeliastrobus provide additional evidence that both Cunninghamia-like and Taiwania-like plants were important elements in the early diversification of the Cupressaceae s.l. A morphological cladistic analysis of the phylogenetic position of Pentakonos and Stutzeliastrobus suggests that an expanded cunninghamioid clade followed by Stutzeliastrobus are the successive sister groups to all other extant Cupressaceae.
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Article DOI: 10.1086/689577
Project DOI: 10.7934/P2387, http://dx.doi.org/10.7934/P2387
This project contains | Matrices |
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Download Project SDD File | Total scored cells: 534 Total media associated with cells: 0 Total labels associated with cell media: 0 |
Characters | |
Total characters: 22 Total characters with associated media: 0 Total characters with media with labels: 0 Total character states: 58 Total character states with associated media: 0 Total character states with media with labels:0 Total unordered/ordered characters:22/0 |
Currently Viewing:
MorphoBank Project 2387
MorphoBank Project 2387
- Creation Date:
16 March 2016 - Publication Date:
11 January 2017 - Project views: 19855
- Media downloads: 1
- Matrix downloads: 46
This research
supported by
Authors' Institutions
- Brown University
- Niigata University
- Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences
- Chicago Botanic Garden
- Mongolian Academy of Sciences
- Oak Spring Garden Foundation
- Botanischer Garten Rombergpark
Members
member name | taxa | specimens | media | chars | character
| cell scorings (scored, NPA, "-") | cell
| rules | ||||||
Fabiany Herrera Project Administrator | 28 | 1 | 1 | 22 | 0 | 0 | 534 (533, 0, 1) | 0 | 0 | 0 |
Taxonomic Overview for Matrix 'M24402' (28 Taxa)
taxon | unscored cells |
scored cells |
no cell support |
NPA cells |
"-" cells | cell images | labels on cell images |
member access |
[1] Cedrus deodara Last Modified in 01/11/17 | 0 | 22 | 22 | 0 | 0 | 0 | 0 | 1 |
[2] Sciadopitys verticillata Last Modified in 01/11/17 | 0 | 22 | 21 | 0 | 1 | 0 | 0 | 1 |
[3] Cunninghamia lanceolata Last Modified in 01/11/17 | 0 | 22 | 22 | 0 | 0 | 0 | 0 | 1 |
[4] Taiwania cryptomerioides Last Modified in 01/11/17 | 0 | 22 | 22 | 0 | 0 | 0 | 0 | 1 |
[5] Athrotaxis laxifolia Last Modified in 01/11/17 | 0 | 22 | 22 | 0 | 0 | 0 | 0 | 1 |
[6] Sequoiadendron giganteum Last Modified in 01/11/17 | 0 | 22 | 22 | 0 | 0 | 0 | 0 | 1 |
[7] Sequoia sempervirens Last Modified in 01/11/17 | 0 | 22 | 22 | 0 | 0 | 0 | 0 | 1 |
[8] Metasequoia glyptostroboides Last Modified in 01/11/17 | 0 | 22 | 22 | 0 | 0 | 0 | 0 | 1 |
[9] Cryptomeria japonica Last Modified in 01/11/17 | 0 | 22 | 22 | 0 | 0 | 0 | 0 | 1 |
[10] Glyptostrobus pensilis Last Modified in 01/11/17 | 0 | 22 | 22 | 0 | 0 | 0 | 0 | 1 |
[11] Taxodium distichum Last Modified in 01/11/17 | 0 | 22 | 22 | 0 | 0 | 0 | 0 | 1 |
[12] Thuja occidentalis Last Modified in 01/11/17 | 0 | 22 | 22 | 0 | 0 | 0 | 0 | 1 |
[13] Platycladus orientalis Last Modified in 01/11/17 | 0 | 22 | 22 | 0 | 0 | 0 | 0 | 1 |
[14] Austrocedrus chilensis Last Modified in 01/11/17 | 0 | 22 | 22 | 0 | 0 | 0 | 0 | 1 |
[15] † Elatides zhoui Last Modified in 01/12/17 | 0 | 22 | 22 | 0 | 0 | 0 | 0 | 1 |
[16] † Elatides williamsonii Last Modified in 01/12/17 | 0 | 22 | 22 | 0 | 0 | 0 | 0 | 1 |
[17] † Elatides harrisii Last Modified in 01/12/17 | 2 | 20 | 20 | 0 | 0 | 0 | 0 | 1 |
[18] † Sewardiodendron laxum Last Modified in 01/12/17 | 0 | 22 | 22 | 0 | 0 | 0 | 0 | 1 |
[19] † Cunninghamia taylorii Last Modified in 01/12/17 | 3 | 19 | 19 | 0 | 0 | 0 | 0 | 1 |
[20] † Austrohamia minuta Last Modified in 01/12/17 | 7 | 15 | 15 | 0 | 0 | 0 | 0 | 1 |
[21] † Cunninghamiostrobus goedertii Last Modified in 01/12/17 | 6 | 16 | 16 | 0 | 0 | 0 | 0 | 1 |
[22] † Hubbardiastrobus cunninghamioides Last Modified in 01/12/17 | 9 | 13 | 13 | 0 | 0 | 0 | 0 | 1 |
[23] † Hughmillerites juddii Last Modified in 01/12/17 | 13 | 10 | 9 | 0 | 0 | 0 | 0 | 1 |
[24] † Scitistrobus duncaanensis Last Modified in 01/12/17 | 12 | 10 | 10 | 0 | 0 | 0 | 0 | 1 |
[25] † Acanthostrobus edenensis Last Modified in 01/12/17 | 10 | 14 | 12 | 0 | 0 | 0 | 0 | 1 |
[26] † Parataiwania nihongii Last Modified in 01/12/17 | 12 | 11 | 10 | 0 | 0 | 0 | 0 | 1 |
[27] † Pentakonos diminutus Last Modified in 01/12/17 | 12 | 10 | 10 | 0 | 0 | 0 | 0 | 1 |
[28] † Stutzeliastrobus foliatus Last Modified in 01/12/17 | 4 | 21 | 18 | 0 | 0 | 0 | 0 | 1 |
Project views
type | number of views | Individual items viewed (where applicable) |
Total project views | 19855 | |
Project overview | 2500 | |
Matrix views | 1790 | Matrix landing page (1530 views); Herrera et al_2017_Cupressaceae matrix (260 views); |
Media views | 4064 | Media search (3514 views); M435783 (550 views); |
Views for media list | 1238 | |
Specimen list | 2099 | |
Taxon list | 7286 | |
Bibliography | 877 | |
Documents list | 1 |
Project downloads
type | number of downloads | Individual items downloaded (where applicable) |
Total downloads from project | 276 | |
Project downloads | 229 | |
Matrix downloads | 46 | Herrera et al_2017_Cupressaceae matrix (46 downloads); |
Media downloads | 1 | M435783 (1 download); |