First occurrence of &lt;em&gt;Cloudina carinata&lt;/em&gt; Cortijo et al., 2010 in South America, Tamengo Formation, Corumbá Group, upper Ediacaran of Midwestern

Adôrno, Rodrigo Rodrigues; Walde, Detlef Hans-Gert; Erdtmann, Bernd-Dietrich; Denezine, Matheus; Cortijo, Iván; Carmo, Dermeval Aparecido do; Giorgioni, M.; Ramos, Maria Eduarda; Fazio, G.

doi:10.3989/egeol.43587.550

Cited by 8 publications

(6 citation statements)

References 15 publications

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“…These ages agree with the 543 ± 3 Ma provided before by Babinski et al (2008). Furthermore, the presence of the indexfossils C. lucianoi and Cloudina carinata in the Tamengo Formation supports an upper Ediacaran age (Adôrno et al, 2017;Adôrno et al, 2019b).…”

Section: Frontiers Inmentioning

confidence: 78%

“…The "classical" facies of the Tamengo Formation are those observed in the Corcal section, which occur also in other outcrops of the region along the Paraguay river, such as in the sections of Porto Sobramil (also known as Claudio or Saladeiro), Cacimba, Porto Figueiras, Goldfish, Ladario-Corumbá escarpment, and Horii mine (Boggiani et al, 2010;Walde et al, 2015;Adôrno et al, 2019b;Oliveira et al, 2019;Rivera, 2019;Amorim et al, 2020). Alongside the same lithofacies, these sections display also consistent and rather homogenous δ 13 C values (Boggiani et al, 2010;Rivera, 2019;Caetano Filho, 2020;and this work).…”

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confidence: 96%

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New Facies Model and Carbon Isotope Stratigraphy for an Ediacaran Carbonate Platform From South America (Tamengo Formation—Corumbá Group, SW Brazil)

et al. 2022

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The Ediacaran is a period characterized by the diversification of early animals and extensive neritic carbonate deposits. These deposits are still not well understood in terms of facies and carbon isotope composition (δ13C). In this study we focus on the Tamengo Formation, in southwestern Brazil, which constitutes one of the most continuous and well-preserved sedimentary record of the late Ediacaran in South America. We present new detailed lithofacies and stable isotopes data from two representative sections (Corcal and Laginha) and revise the paleoenvironmental and stratigraphic interpretation of the Tamengo Formation. The Corcal section consists of neritic deposits including shallow-water limestone beds, alternated with shale and subordinate marl beds. These facies yield specimens of the Ediacaran fossils Cloudina lucianoi and Corumbella werneri. On the other hand, the Laginha section shows more heterogeneous facies, such as impure carbonates, breccias, marls, and subordinate mudstone beds, as well as no evidence of Corumbella werneri. The stable carbon isotope record is also different between the two sections, despite belonging to the same unit. The Corcal section displays higher and more homogeneous δ13C values, consistent with those of Ediacaran successions worldwide. The Laginha section, instead, displays more variable δ13C values, which suggest the influence of local and post depositional processes. The difference between the two sections was attributed to the different distance from the shore. We propose that the difference is due to topographic variations of the continental platform, which, at the Laginha site, was steeper and controlled by extensional faults. Therefore, the Corcal section is a better reference for the Tamengo Formation, whereas the Laginha is more particular and influenced by local factors. Besides, the lithofacies associations of the Tamengo Formation are like those of the Doushantuo and Dengying formatios, in South China, with no significant biogenic carbonate buildups, and different from those of other important Ediacaran units, such as the Nama Group in Nmibia and the Buah Formation in Oman. Our work highlights the complexity and heterogeneity of Ediacaran carbonate platforms and of their carbon isotopic composition. In addition, we characterize the Corcal section as a possible reference for the Ediacaran in South America.

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Section: Frontiers Inmentioning

confidence: 78%

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confidence: 96%

New Facies Model and Carbon Isotope Stratigraphy for an Ediacaran Carbonate Platform From South America (Tamengo Formation—Corumbá Group, SW Brazil)

et al. 2022

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“…There are two specimens of Cl. carinata reported from the Tamengo Formation, Brazil [ 39 ]. Although slightly larger, they are similar in morphology to the types of this species from the Membrillar olistostrome (electronic supplementary material, figure S8).…”

Section: Resultsmentioning

confidence: 99%

Enduring evolutionary embellishment of cloudinids in the Cambrian

et al. 2021

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The Ediacaran–Cambrian transition and the following Cambrian Explosion are among the most fundamental events in the evolutionary history of animals. Understanding these events is enhanced when phylogenetic linkages can be established among animal fossils across this interval and their trait evolution monitored. Doing this is challenging because the fossil record of animal lineages that span this transition is sparse, preserved morphologies generally simple and lifestyles in the Ediacaran and Cambrian commonly quite different. Here, we identify derived characters linking some members of an enigmatic animal group, the cloudinids, which first appeared in the Late Ediacaran, to animals with cnidarian affinity from the Cambrian Series 2 and the Miaolingian. Accordingly, we present the first case of an animal lineage represented in the Ediacaran that endured and diversified successfully throughout the Cambrian Explosion by embellishing its overall robustness and structural complexity. Among other features, dichotomous branching, present in some early cloudinids, compares closely with a cnidarian asexual reproduction mode. Tracking this morphological change from Late Ediacaran to the Miaolingian provides a unique glimpse into how a primeval animal group responded during the Cambrian Explosion.

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“…Due to similarity in the described collar structures, the species is suggested to be synonymized with C. hartmannae (Yang et al, 2016;Cai et al, 2017). On the other hand, Cloudina carinata, from the Villarta Limestone of the Ibor Group of Spain (Cortijo et al, 2010) and Tamengo Formation of Brazil (Adorno et al, 2019), is distinguished from C. hartmannae by its longitudinal crests. The putatively recrystallized Cloudina carinata in Siberia (Terleev et al, 2011) cannot be unequivocally confirmed by observations through thin-sections.…”

Section: Systematic Paleontologymentioning

confidence: 98%

“…hartmannae (Yang et al, 2016; Cai et al, 2017). On the other hand, Cloudina carinata , from the Villarta Limestone of the Ibor Group of Spain (Cortijo et al, 2010) and Tamengo Formation of Brazil (Adorno et al, 2019), is distinguished from C . hartmannae by its longitudinal crests.…”

Section: Systematic Paleontologymentioning

confidence: 99%

Taxonomic revision of Ediacaran tubular fossils: Cloudina, Sinotubulites and Conotubus

et al. 2021

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The Ediacaran tubular fossils Cloudina, Sinotubulites, and Conotubus are taxonomically revised with type materials. It is proposed that Aulophycus lucianoi Beurlen and Sommer, 1957, is not a senior synonym of Cloudina hartmannae Germs, 1972. Instead, most of its syntypes may be assigned to Sinotubulites or other taxa. Lectotypes of Sinotubulites baimatuoensis Chen et al., 1981, and Conotubus hemiannulatus Zhang and Lin in Lin et al., 1986, are designated from rediscovered syntypes. Sinotubulites baimatuoensis Chen et al., 1981, is reported from the Mooifontein Member of Nama Group at Aar Farm, Namibia. Cloudina waldei Hahn and Pflug, 1985, is assigned to Sinotubulites baimatuoensis, and thus its occurrence range is extended to Brazil. The lectotype of Conotubus hemiannulatus shows corrugations and annulations on the surface distinguishing it from Cloudina and other collared Ediacaran tubular fossils. Based on the taxonomic revision, we propose a Cloudina hartmannae Interval Zone for the terminal Ediacaran with the upper boundary defined by the first appearance datum of Protohertzina anabarica (i.e., the index fossil of the early Cambrian Anabarites trisulcatus-Protohertzina anabarica Assemblage Zone).

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First occurrence of <em>Cloudina carinata</em> Cortijo et al., 2010 in South America, Tamengo Formation, Corumbá Group, upper Ediacaran of Midwestern

Cited by 8 publications

References 15 publications

New Facies Model and Carbon Isotope Stratigraphy for an Ediacaran Carbonate Platform From South America (Tamengo Formation—Corumbá Group, SW Brazil)

New Facies Model and Carbon Isotope Stratigraphy for an Ediacaran Carbonate Platform From South America (Tamengo Formation—Corumbá Group, SW Brazil)

Enduring evolutionary embellishment of cloudinids in the Cambrian

Taxonomic revision of Ediacaran tubular fossils: Cloudina, Sinotubulites and Conotubus

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