Browsing by Author "Harper, Carla"
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Arbuscular mycorrhizal fungi in a voltzialean conifer from the Triassic of Antarctica
Harper, Carla (2015)Mycorrhizas are intimate mutualistic relationships between plants and fungi that represent an integral component of ancient and extant ecosystems. These symbioses have been established for at least 400 million years and ... -
Archaeosporites rhyniensis gen. et sp. nov. (Glomeromycota, Archaeosporaceae), from the Lower Devonian Rhynie chert a fungal lineage morphologically unchanged from more than 400 million years
Harper, Carla (2020)Background and Aims: Structurally preserved arbuscular mycorrhizas from the Lower Devonian Rhynie chert represent core fossil evidence of the evolutionary history of mycorrhizal systems. Moreover, Rhynie chert fossils of ... -
Celebrating women in paleobotany: A tribute to Edith L. Taylor
Harper, Carla (2021) -
Cheirolepidiaceous diversity: an anatomically preserved pollen cone from the Lower Jurassic of southern Victoria Land, Antarctica
Harper, Carla (2015)To date, the vast majority of fossils described for the extinct conifer family, the Cheirolepidiaceae, have been reported from compression/impressions primarily from Cretaceous rocks; there are fewer reports from ... -
Filamentous cyanobacteria preserved in masses of fungal hyphae from the Triassic of Antarctica
Harper, Carla (2020)Permineralized peat from the central Transantarctic Mountains of Antarctica has provided a wealth of information on plant and fungal diversity in Middle Triassic high-latitude forest paleoecosystems; however, there are no ... -
Fossil Fungi
Harper, Carla (2016) -
Frankbaronia velata nov. sp., a putative peronosporomycete oogonium containing multiple oospores from the Lower Devonian Rhynie chert
Harper, Carla (2013)Spherical to pyriform microfossils containing multiple smooth-walled spherules from the Lower Devonian Rhynie chert are described as oogonia of a new fossil peronosporomycete based on congruencies in basic morphology to ... -
Fungal sporulation in a Permian plant fragment from Antarctica. Bulletin of Geosciences
Harper, Carla (2018)Documented evidence of fungi from the Permian of Antarctica mostly consists of dispersed remains that do not provide the whole complement of diagnostic features necessary to determine even broad systematic affinities. A ... -
Fungi as parasites: A conspectus of the fossil record
Harper, Carla (Springer, 2021)Fungal parasites are important drivers in ecosystem dynamics today that can have far-reaching effects on the performance and community structure of other organisms. Knowledge of the fossil record and evolution of ... -
Fungi associated with Glossopteris (Glossopteridales) leaves from the Permian of Antarctica: A preliminary report
Harper, Carla (2015)Fungi today occur on virtually every plant part, living and dead, and represent a significant proportion of fungal diversity. Arborescent seed ferns characterized by large, tongue-shaped leaves with reticulate venation ... -
Microfossils from the Lower Devonian Rhynie Chert with suggested affinities to the Peronosporomycetes
Harper, Carla (2012)A conspicuous silicified microfossil, Frankbaronia polyspora n. gen. n. sp., occurs in plant litter and as an inhabitant of microbial mats from the Lower Devonian Rhynie chert, Aberdeenshire, Scotland. Specimens are ... -
Morphological diversity of fungal reproductive units in the Lower Devonian Rhynie and Windyfield cherts, Scotland: A new species of the genus Windipila
Harper, Carla (2020)The Lower Devonian Rhynie and Windyfield cherts from Scotland contain a remarkable diversity of microscopic fungal propagules and reproductive units; however, only relatively few of these fossils are described. One of them ... -
Mycorrhizal symbiosis in the Paleozoic seed fern Glossopteris from Antarctica
Harper, Carla (2013)Mycorrhizal associations occur in almost all modern plant groups and are probably one of the most important forms of symbioses in the context of terrestrial ecology and evolution. Surprisingly, there is a paucity of ... -
A Putative fossil zygomycetous fungus with mantled zygosporangia and apposed gametangia from the lower coal measures (Carboniferous) of Great Britain
Harper, Carla (2013)Several specimens of a new fungal reproductive unit, Halifaxia taylorii nov. gen. et spec., occur within the tracheids of a structurally preserved fern axis from the Lower Pennsylvanian of Great Britain. The reproductive ... -
Reexamination of cell contents in Pennsylvanian spores and pollen grains using Raman spectroscopy
Harper, Carla (2014)Permineralization offers exceptional structural preservation to the level of cellular components, many of which are found within fossilized plant specimens. In some cases, structures within plant cells, particularly those ... -
Reinvestigating Carboniferous actinomycetes : authigenic formation of biomimetic carbonates and implications for microbial paleoecology
Harper, Carla (2013)Paleoecological interactions among fossil microorganisms have garnered significant interest within the paleobotanical community; however, an understanding of the early diagenesis of associated plant material is of critical ... -
Rhizophydites matryoshkae gen. et sp. nov. (fossil Chytridiomycota) on spores of the early land plant Horneophyton lignieri from the Lower Devonian Rhynie chert
Harper, Carla (2021)Premise of research: As our understanding of the importance of fungi in ecosystems today increases, we are still in the early stages of appreciating their roles in the past. The famous Early Devonian Rhynie chert contains ... -
Structurally preserved fungi from Antarctica: Diversity and interactions in late Paleozoic and Mesozoic polar forest ecosystems.
Harper, Carla (2016)Chert and silicified wood from the Permian through Cretaceous of Antarctica contain abundant information on fungal diversity and plant–fungal interactions. The chert deposits represent a particularly interesting setting ... -
Thomas N. Taylor – Pioneering palaeomycologist (1937–2016)
Harper, Carla (2017)IMA De Bary and Ainsworth Medals These Medals represent the highest honours bestowed by the IMA, and presentation of the awards is normally at International Mycological Congresses (IMC). The Committee may, however, choose ... -
Tylosis formation and fungal interactions in an Early Jurassic conifer from northern Victoria Land, Antarctica
Harper, Carla (2012)Well-preserved fungi occur in permineralized conifer axes from the Lower Jurassic of northern Victoria Land, Antarctica. The fungus is characterized by septate hyphae extending through the vascular ray system via penetration ...