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Trachyhystrichosphaera

Splet30. jun. 2015 · 本次研究在沟后组中发现了带刺疑源类Trachyhystrichosphaera aimika，该类化石仅出现在大冰期之前的新元古代早期地层中，是新元古代早期拉伸纪（Tonian，1000 Ma至~720 Ma）的标志性化石。. 此外，与T. aimika同时产出的其他真核生物微体化石，例如Valeria与Dictyosphaera等 ... Splet01. okt. 2013 · Other published Trachyhystrichosphaera species were either synonymized with T. aimika or excluded from Trachyhystrichosphaera because they do not have the characteristic features of this genus. Butterfield et al. (1994) also regarded Nucellohystrichosphaera Timofeev and Hermann in Timofeev et al., 1976 , as a synonym …

New insights on the palaeobiology and biostratigraphy

Spletcrassa, Trachyhystrichosphaera vidalii, Trachyhystri chosphaera sp., Micrhystridium pallidum and Cymatio sphaera minuta. Presence of acanthomorphic acritarchs such as Trachyhystrichosphaera, Cymatiosphaera and Micrhystridium is important in assigning the age of the Gangolihat Dolomite. On the whole the microbiotic Splet15. maj 2024 · The recovered palynomorph assemblage includes Leiosphaeridia spp., Kildinosphaera verrucata, Trachyhystrichosphaera sp., the filamentous cyanophyte Taeniatum sp., the clusters of simple, spheroidal forms Myxococcoides sp., and the colonial cyanobacteria Synsphaeridium sp. This palynomorph assemblage suggests a … sainsbury\u0027s ewell road https://shinestoreofficial.com

Probable Proterozoic Fungi - JSTOR

Splet01. jan. 2005 · The presence of Tappania in the Mesoproterozoic Roper Group of Australia extends the record of putative fungi to 1430 Ma. Along with other Proterozoic acritarchs exhibiting fungus-like characteristics (e.g., Trachyhystrichosphaera, Shuiyousphaeridium, Dictyosphaera, Foliomorpha ), there is a case to be made for an extended and relatively ... Splet21. jan. 2011 · PDF The Palaeoproterozoic to Neoproterozoic era (1,700–542 Ma) is a significant time of transition, reflecting major biotic events in the evolution of... Find, read and cite all the research ... SpletTrachyhystrichosphaera B.V.Timofeev & T.N.Hermann, 1976 Bibliographic References. Farr, E. R.; Zijlstra, G. (eds). (1996-current). Index Nominum Genericorum (ING). A compilation of generic names published for organisms covered by the ICN: International Code of Nomenclature for Algae, Fungi, and Plants. [previously: organisms covered by the ... thierry condor

Probable Proterozoic fungi Paleobiology GeoScienceWorld

Category:The Proterozoic Record of Eukaryotes - GeoScienceWorld

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Trachyhystrichosphaera

Microfossils from the late Mesoproterozoic - ScienceDirect

SpletThe present record of Trachyhystrichosphaera as well as the earlier studies of micro and megascopic life of the Bhander Group in general and the Sirbu Shale in particular (aided by the absence of any Cambrian fossil record)indicate that in all possibilities,age of the Sirbu Shale should lie near Cryogenian (850 –630 Ma)and the uppermost ... Spletacritarchs, Trachyhystrichosphaera considered to be an age-marker microfossil of the Cryogenian (850–630Ma). It is reported for the first time from any Indian microfossil assemblage of Proterozoic succession. The other microfossils of the Sirbu Shale Formation are: well preserved simple, small

Trachyhystrichosphaera

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SpletSpecies Trachyhystrichosphaera aimika German in Timofeev et al., 1976 † Species Trachyhystrichosphaera anelpa W.-L. Zang in W.-L. Zang & Walter, 1992 † Species Trachyhystrichosphaera bothnica Tynni & Donner, 1980 † Species Trachyhystrichosphaera hystricosa W.-L. Zang in W.-L. Zang & Walter, 1992 † Species Trachyhystrichosphaera … SpletPossible link to Algaebase for nomenclatural details: Trachyhystrichosphaera stricta Possible alternative combinations: Archaeohystrichosphaeridium strictum; Baltisphaeridium strictum; Goniosphaeridium strictum; Leiofusa stricta; Veryhachium strictum

SpletAs The Liulaobei material of Trachyhystrichosphaera also shows discussed above under the genus Trachyhystrichosphaera, Prolato- two other features that have been previously illustrated but not forma aculeate is also regarded as synonymous with T. aimika; described in detail: nucleus-like internal bodies (Jankauskas et al., polar distribution of ... Splet15. maj 2024 · The organic matter has undergone overmature thermal evolution. The sediment shows low total organic carbon (TOC) and low total sulfur (TS) values of <0.25% and <0.01%, respectively. Low TS/TOC < 0.08 suggests oxic bottom waters during the deposition of the Zor diamictite.

Splet01. mar. 1999 · Trachyhystrichosphaera sp. Discussion. The Dongjia acritarch assemblage is dominated by sphaeromorphic acritarchs and contains some spinose acritarch specimens. Palynologists have long been perplexed by the classification and nomenclature of sphaeromorphic acritarchs, and even the rules for identifying and differentiating … SpletTill date, Trachyhystrichosphaera has so far not been reported from successions older than the Tonian (1000850 Ma). It is believed that acanthomorphs attained maximum size in Ediacaran (630-542 Ma ...

Splet01. sep. 2024 · The acanthomorphic acritarch Trachyhystrichosphaera aimika has become a focus of recent biostratigraphic investigations, showing great potential to assist the definition of the Tonian Global Boundary Stratotype Section and Point (GSSP).

SpletChuaria, Tawuia, Trachyhystrichosphaera, Germi-nosphaera, Tappania, and a number of figured but as yet undescribed forms (see Butterfield and Rainbird 1998). Methods Approximately 100 g of each sample (88-KL-2, 89-VI-21, 89-VI-22 and 89-VI-23) was dissolved in 30% HF with minimal agitation, and the resulting slurries passed through a … thierry conduiteSpletTrachyhystrichosphaera includes various species characterized by the presence of a variable number of hollow heteromorphic processes (Butterfield et al., 1994). Preliminary infrared microspectroscopy analyzes performed on two species, T. aimika and T. botula, from the 1.1 Ga Taoudeni Basin, thierry constantinSpletSIDNEY ASH TEXT-FIG. 1-Index map showing the three areas from which Sanmiguelia lewisi has been collect-ed in the southwestern United States. narump is a sequence consisting of principally thierry comtet roscoff