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2019 In Paleontology
Flora Plants Fungi Paleomycological research * Fossil sporocarps indistinguishable from sporocarps of members of the extant genus ''Stemonitis'' are described from the Cretaceous amber from Myanmar by Rikkinen, Grimaldi & Schmidt (2019). * A study on the impact of major historical events such as the Cretaceous–Paleogene extinction event on the evolution of two major subclasses of lichen-forming fungi ( Lecanoromycetidae and Ostropomycetidae) is published by Huang ''et al.'' (2019). * Description of crustose lichens from European Paleogene amber is published by Kaasalainen ''et al.'' (2019). * Fungi belonging to the genera '' Periconia'', ''Penicillium'' and '' Scopulariopsis'', representing the first and the oldest known fossil record of these taxa, are described from the Eocene Baltic amber by Tischer ''et al.'' (2019). Sponges Research * Sponge spicules and spicule-like structures that probably represent sponge fossils are described from four sections of the Ediacara ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neoproterozoic
The Neoproterozoic Era is the last of the three geologic eras of the Proterozoic geologic eon, eon, spanning from 1 billion to 538.8 million years ago, and is the last era of the Precambrian "supereon". It is preceded by the Mesoproterozoic era and succeeded by the Paleozoic era of the Phanerozoic eon, and is further subdivided into three geologic period, periods, the Tonian, Cryogenian and Ediacaran. One of the most severe glaciation events known in the geologic record occurred during the Cryogenian period of the Neoproterozoic, when global ice sheets may have reached the equator and created a "Snowball Earth" lasting about 100 million years. The earliest fossils of complex life are found in the Tonian period in the form of ''Otavia'', a primitive sponge, and the earliest fossil evidence of metazoan evolutionary radiation, radiation are found in the Ediacaran period, which included the namesaked Ediacaran biota as well as the oldest definitive cnidarians and bilaterians in th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ophiocordycipitaceae
Ophiocordycipitaceae is a family (biology), family of parasite, parasitic fungus, fungi in the phylum Ascomycota, class Sordariomycetes. It was created in 2007 to resolve the paraphyly of Calvicipitaceae. It was updated in 2020. Genera As accepted in 2020; (with number of species) *''Hantamomyces'' (1) *''Unilateralis'' (1) *''Harposporium'' (37) (Anamorphic) *''Hirsutella'' (50+) *''Hymenostilbe'' (12) *''Ophiocordyceps'' (263) *''Paraisaria'' (11) *''Perennicordyceps'' (4) *''Pleurocordyceps'' (10) *''Polycephalomyces'' (18) *''Purpureocilium'' (5) *''Syngliocladium'' (5) *''Tolypocladium'' (47) Former assignments: *''Blistum'' split up into different genera *''Didymobotryopsis'' Accepted by Species Fungorum but not 2020 Outline *''Haptocillium'' moved to Drechmeria, Clavicipitaceae *''Synnematium'' synonym for Hirsutella *''Trichosterigma'' synonym for Hirsutella Fossil species *†''Paleoophiocordyceps'' See also *Cordycipitaceae *Cordyceps References Ext ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Baltic Amber
Baltic amber or succinite is amber from the Baltic region, home of its largest known deposits. It was produced sometime during the Eocene epoch, but exactly when is controversial. It has been estimated that this forested region provided the resin for more than 100,000 tons of amber. Today, more than 90% of the world's amber comes from Kaliningrad Oblast of Russia. It is a major source of income for the region; the local Kaliningrad Amber Combine extracted 250 tonnes of it in 2014 and 400 tonnes in 2015. Baltic amber is also found in Poland, as well as the Baltic states. Bitterfeld amber from the brown coal mines near Bitterfeld in Germany was previously thought to be redeposited Baltic amber, but is now known to be chemically distinct, though like with Ukrainian Rovno amber, it is thought to have been deposited around the same time as Baltic amber. Because Baltic amber contains from 3 to 8% succinic acid, it is also termed succinite. Geologic context ''In situ'' Balt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polycephalomyces Baltica
''Polycephalomyces'' is a genus of fungi in the family Ophiocordycipitaceae Ophiocordycipitaceae is a family (biology), family of parasite, parasitic fungus, fungi in the phylum Ascomycota, class Sordariomycetes. It was created in 2007 to resolve the paraphyly of Calvicipitaceae. It was updated in 2020. Genera As accept .... Species The following species are recognised in the genus ''Polycephalomyces'': *'' Polycephalomyces albiramus'' *'' Polycephalomyces cylindrosporus'' *'' Polycephalomyces ditmarii'' *'' Polycephalomyces elaphomyceticola'' *'' Polycephalomyces formosus'' *'' Polycephalomyces kanzashianus'' *'' Polycephalomyces paludosus'' *'' Polycephalomyces ponerae'' *'' Polycephalomyces ramosus'' *'' Polycephalomyces tomentosus'' References Clavicipitaceae Hypocreales genera {{Fungus-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phoma
''Phoma'' is a genus of common coelomycetous soil fungi. It contains many plant pathogenic species. Description Spores are colorless and unicellular. The pycnidia are black and depressed in the tissues of the host. ''Phoma'' is arbitrarily limited to those species in which the spores are less than 15 μm as the larger spored forms have been placed in the genus '' Macrophoma''. The most important species include ''Phoma beta'' which is the cause of the heart rot and blight of beets, ''Phoma batata'' that produces a dry rot of sweet potato, and ''Phoma solani''. Taxonomy About 140 ''Phoma'' taxa have been defined and recognized which may be divided into two large groups: (i) plurivorous fungi, generally saprobic or weakly parasitic, mainly from temperate regions in Eurasia, but occasionally also found in other parts of the world (including areas with cool or warm climates); and (ii) specific pathogens of cultivated plants. However other estimates place the number of taxa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neogene
The Neogene ( ,) is a geologic period and system that spans 20.45 million years from the end of the Paleogene Period million years ago ( Mya) to the beginning of the present Quaternary Period million years ago. It is the second period of the Cenozoic and the eleventh period of the Phanerozoic. The Neogene is sub-divided into two epochs, the earlier Miocene and the later Pliocene. Some geologists assert that the Neogene cannot be clearly delineated from the modern geological period, the Quaternary. The term "Neogene" was coined in 1853 by the Austrian palaeontologist Moritz Hörnes (1815–1868). The earlier term Tertiary Period was used to define the span of time now covered by Paleogene and Neogene and, despite no longer being recognized as a formal stratigraphic term, "Tertiary" still sometimes remains in informal use. During this period, mammals and birds continued to evolve into modern forms, while other groups of life remained relatively unchanged. The first human ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Palaeoglomus Strotheri
''Palaeoglomus'' ("ancient ball") is a genus of microscopic mycorrhizal fossil, found in palynological preparations of rocks which separate out organic remains by acid dissolution. Description ''Palaeoglomus'' has large spherical to ellipsoidal spores with multilayered walls, as well as irregularly shaped vesicles, attached to aseptate hyphae. Species ''Palaeoglomus grayi'' type species from the Middle Ordovician Guttenberg Formation near Platteville, Wisconsin. ''Palaeoglomus boullardi'' from the Early Devonian Rhynie Chert bear Rhynie, Aberdeenshire, Rhynie, Scotland. ''Palaeoglomus strotheri'' from the Middle Ordovician (Darriwilian, 460 million years old) Douglas Lake Member of the Lenoir Limestone from Douglas Dam, Tennessee. Biological affinities ''Palaeoglomus'' is similar to modern mycorrhizae such as ''Glomus (fungus), Glomus''. References {{Taxonbar, from=Q28210813 Fossils of Tennessee Paleozoic fungi Glomerales ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lenoir Formation
The Lenoir Formation is a geologic formation in Tennessee. It preserves fossils dating back to the Ordovician period. See also * List of fossiliferous stratigraphic units in Tennessee * Paleontology in Tennessee Paleontology in Tennessee refers to paleontological research occurring within or conducted by people from the U.S. state of Tennessee. During the early part of the Paleozoic era, Tennessee was covered by a warm, shallow sea. This sea was home to b ... References * Ordovician Tennessee Ordovician southern paleotemperate deposits Geologic formations of Tennessee {{Tennessee-geologic-formation-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Darriwilian
The Darriwilian is the upper stage of the Middle Ordovician. It is preceded by the Dapingian and succeeded by the Upper Ordovician Sandbian Stage. The lower boundary of the Darriwilian is defined as the first appearance of the graptolite species ''Undulograptus austrodentatus'' around million years ago. It lasted for about 10.8 million years until the beginning of the Sandbian around million years ago. This stage of the Ordovician was marked by the beginning of the Andean-Saharan glaciation. Naming The name Darriwilian is derived from Darriwil, a parish in County of Grant, Victoria (Australia). The name was proposed in 1899 by Thomas Sergeant Hall. GSSP The GSSP of the Darriwilian is the Huangnitang Section () near the village Huangnitang, 3.5 km southwest of Changshan County Town (Zhejiang, China). It is an outcrop of the Ningkuo Formation, consisting of mainly black shale. The lower boundary of the Darriwilian is defined as the first appearance datum of the graptolite ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gregory Retallack
Gregory John Retallack (born 8 November 1951) is an Australian paleontologist, geologist, and author who specializes in the study of fossil soils ( paleopedology). His research has examined the fossil record of soils though major events in Earth history, extending back some 4.6 billion years. He has written two textbooks on paleopedology. Biography Retallack moved with his family from Hobart, Tasmania at age 4. He grew up in Hurstville and then Epping, in the suburbs of Sydney. He attended The King's School, Parramatta, then studied biology and paleontology at Macquarie University. He received a BSc Hons with University Medal in 1974 from the University of New England (Australia) and a PhD in 1978 in geology from the same university. After a postdoctoral fellowship at Indiana University Bloomington he joined the faculty at the University of Oregon in 1981. He was a professor in the Department of Geological Sciences since 1992, and Director of the Condon Collection of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
