scholarly journals Naming of parts: the use of fossil-taxa in palaeobotany

2021 ◽  
Vol 77 (1) ◽  
pp. 166-186
Author(s):  
Christopher J. Cleal ◽  
Barry A. Thomas
Keyword(s):  
Not Given ◽  
Morphological Similarity ◽  
Fossil Plants ◽  
Living Plant ◽  
Plant Fossils ◽  
Plant Parts ◽  
Sedimentary Deposits ◽  
Phylogenetic Studies ◽  
Code Of Nomenclature ◽  
International Code Of Nomenclature

Fossil plants are extinct plants whose remains (referred to as plant fossils) are found preserved in sedimentary deposits. Plant fossils are classified using fossil-taxa as defined in the International Code of Nomenclature. Fossil-taxa differ conceptually from taxa of living plants in that they often do not refer to whole organisms, but to the remains of one or more parts of the parent organism, in one or more preservational states. There can be complications when two parts of a plant are shown to be connected, or when two preservational states are correlated, and to avoid disrupting the wider palaeobotanical taxonomy it is often best to keep the fossil-taxa separate. Extinct fossil plants reconstructed by piecing together the plant fossils are best not given formal Linnean taxonomic names. There can also be problems using living plant taxa for fossils, even when there is a close morphological similarity of particular plant parts. Fossil-taxa for different plant parts can reflect different taxonomic ranks of the parent plants so care must be taken when using such taxa in floristic or phylogenetic studies. Because of taphonomic factors, a number of “artificial” fossil-taxa have proved useful, despite that they do not fully reflect the systematic positions of the parent plants.

scholarly journals Three new combinations in African Cyperus (Cyperaceae)

2019 ◽  
Vol 152 (3) ◽  
pp. 561-562
Author(s):  
Isabel Larridon ◽  
Marc Reynders
Keyword(s):  
West African ◽  
New Combinations ◽  
African Species ◽  
The Past ◽  
Phylogenetic Studies ◽  
Code Of Nomenclature ◽  
Molecular Phylogenetic ◽  
Taxonomic Changes ◽  
Complex Relationships ◽  
International Code Of Nomenclature

Background – During the past decade several molecular phylogenetic studies tackled the complex relationships within tribe Cypereae. Based on these studies, previously accepted segregate genera such as Pycreus were sunk into the genus Cyperus. Recently, while revising the West African species of Cyperus, three taxa previously placed in Pycreus were identified for which a name in Cyperus is lacking.Methods – The taxonomic changes are performed according to the International Code of Nomenclature for algae, fungi, and plants.Results – Three new combinations in Cyperus are made for names currently placed in Pycreus.

Stratigraphy and fossil plants from the Cutler Formation (Late Paleozoic) and their paleoclimatic implications, eastern Paradox Basin, Colorado

2015 ◽  
Vol 2 ◽  
pp. 9-27 ◽  
Author(s):  
Kendall Grazul ◽  
Jacqueline Huntoon ◽  
Jennifer O’Keefe
Keyword(s):  
Alluvial Fan ◽  
Late Paleozoic ◽  
Fossil Plants ◽  
Fossil Plant ◽  
Living Plant ◽  
Paradox Basin ◽  
Fine Grained ◽  
Plant Fossils ◽  
Arid Conditions ◽  
Semi Arid

Exposures of the late Paleozoic Cutler Formation, near the town of Gateway, Colorado, have traditionally been interpreted as the product of alluvial-fan deposition along the western flank of the Uncompahgre uplift and within the easternmost portion of the Paradox Basin. The Paradox Basin formed between the western margin of the Uncompahgre uplift, a segment of the Ancestral Rocky Mountains, and the western paleoshoreline of the North American portion of Pangea. This part of Pangea is commonly thought to have experienced semi-arid to arid conditions and warm temperatures during the Pennsylvanian and Permian. We present stratigraphic and fossil plant evidence in this paper to support prior interpretations that the Cutler near Gateway, Colorado, was deposited by alluvial fans that hosted localized wetland areas. Our findings are consistent with the results of prior studies that have suggested the climate in the area was warm, semi-arid, and ice-free at the time the plants described in this paper were living. Plant fossils collected from the Cutler Formation came from two sites in The Palisade Wilderness Study Area (managed by the U.S. Department of the Interior, Bureau of Land Management) of western Colorado. The stratigraphic sections at the sites were composed mostly of pebble to cobble conglomerate and sandstone, but the fossil plants were mainly preserved in fine-grained intervals (fine-grained sandstone to siltstone). The preservation of plant fossils in the proximal Cutler Formation is remarkable because the surrounding sections consist mostly of conglomerate and sandstone interpreted as fluvial and debris-flow deposits. The fine-grained strata containing the plant horizons must have been deposited in a wet and protected setting, possibly a spring-fed abandoned channel on the alluvial fan. The plants and their surrounding sediment must have been rapidly buried in order to allow for long-term preservation of the fossils. It seems likely that vegetation was abundant in and adjacent to low-lying wet areas on the fan’s surface, based on the abundance of plant fossils found at the two sites. The fossil plant assemblage includes Calamites, Walchia, and Pecopteris. The flora are interpreted to have lived near the apex of the alluvial-fan system. These fossils suggest that warm and at least seasonally and locally wet conditions existed in the area during the time that the plants were growing. More arid conditions during the late Paleozoic are suggested by the characteristics of some of the time-equivalent and near time-equivalent rocks exposed to the west of the study area in the central Paradox Basin.

scholarly journals International Mycological Congress: Guiding Vote on nomenclature proposals to amend Chapter F of the International Code of Nomenclature for algae, fungi, and plants

IMA Fungus ◽  
2018 ◽  
Vol 9 (2) ◽  
pp. xv-xxi ◽  
Author(s):  
Tom W. May ◽  
Andrew N. Miller
Keyword(s):  
Dna Sequences ◽  
International Code ◽  
Code Of Nomenclature ◽  
International Mycological Congress ◽  
International Code Of Nomenclature

Abstract Results are provided for the Guiding Vote on the seven formal proposals to amend the International Code of Nomenclature for algae, fungi, and plants to be decided by the Fungal Nomenclature Session (FNS) of the XI International Mycological Congress in July 2018. Te ballot for the Guiding Vote was provided online. Tere were 520 valid ballots, submitted by mycologists from 42 countries, belonging to 23 eligible groups and societies, along with authors of proposals. Tw o proposals F-005 and F-006, both concerning DNA sequences as types, exceeded the 75 % No vote that is the threshold above which proposals are considered rejected by the FNS unless formally re-introduced. Two options for amendments to future procedures for the Guiding Vote are proposed: adding eligibility via publication of a nomenclatural novelty among fungi and removing eligibility via membership of IMA MMOs.

The International Journal of Systematic and Evolutionary Microbiology moves to ‘true continuous publication’ at the beginning of 2021: Proposals to emend Rule 24b (2), Note 1 to Rule 27 and Note 2 to Rule 33b of the International Code of Nomenclature of Prokaryotes

2021 ◽  
Vol 71 (2) ◽  
Author(s):  
Aharon Oren ◽  
George M. Garrity ◽  
Edward R. B. Moore ◽  
Iain C. Sutcliffe ◽  
Martha E. Trujillo
Keyword(s):  
Digital Object Identifier ◽  
International Code ◽  
Digital Object ◽  
Final Version ◽  
Code Of Nomenclature ◽  
Publication Time ◽  
Evolutionary Microbiology ◽  
New System ◽  
International Code Of Nomenclature

The International Journal of Systematic and Evolutionary Microbiology (IJSEM) will move to ‘true continuous publication’ during the first months of 2021 to modernize the workflow and align it with the current online-only nature of the journal. In the new format, articles will be cited using an article number rather than page numbering. The article number will be the Digital Object Identifier (DOI) suffix, i.e., the last six digits of the DOI. Benefits of the new system include streamlining in-house processes, hence, reducing time and costs, and speeding up the publication time of the final ‘Version of Record’. Because of the new format of the IJSEM, it is necessary to emend Rule 24b (2) and Note 1 paragraph 3 of Rule 27 of the International Code of Nomenclature of Prokaryotes (ICNP) to regulate matters of priority for papers published after January 2021. We also propose adding another example to Note 2 of Rule 33b to clarify how nomenclatural authorities of names published in the IJSEM from 2021 onward must be cited.

scholarly journals Proposal to change the name Rhodoligotrophos Fukuda et al. 2012, 1947 to Rhodoligotrophus. Request for an Opinion

2013 ◽  
Vol 63 (Pt_9) ◽  
pp. 3545-3545 ◽  
Author(s):  
Aharon Oren ◽  
George M. Garrity ◽  
Bernhard Schink
Keyword(s):  
International Committee ◽  
International Code ◽  
Content Type ◽  
Name Change ◽  
Link Type ◽  
Code Of Nomenclature ◽  
International Code Of Nomenclature

In the opinion of the authors, the genus name Rhodoligotrophos was formed in violation of Principle 3 and Rule 10a of the International Code of Nomenclature of Prokaryotes which requires that genus names are to be treated as Latin substantives. We therefore propose renaming the genus Rhodoligotrophos as Rhodoligotrophus. A Request for an Opinion is submitted to the Judicial Commission of the International Committee on Systematics of Prokaryotes regarding this proposed name change.

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