Cryptospores of Iapó formation: The first evidence of early land plants from Late Ordovician in Paraná Basin, Brazil.

Rodrigues, Lívia Cardoso da Silva; Carmo, Dermeval do; Assine, Mário Luís; Steemans, Philippe

doi:10.1016/j.revpalbo.2022.104742

Cited by 1 publication

(3 citation statements)

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“…Regarding the taxonomic similarities between the Colombian cryptospore assemblage and worldwide Late Ordovician to early Silurian assemblages, comparisons were based on the results already published by Vecoli et al (2011), including Estonia, Anticosti, Turkey, southern Britain, Wales, Belgium, Libya, Czech Republic, and South China, and incorporating more data from Brazil (Le Hérissé et al , 2001; Mizusaki et al , 2002; Rodrigues et al , 2022), Paraguay (Steemans & Pereira, 2002; Mauller et al , 2004); Saudi Arabia (Wellman et al , 2015), Algeria (Spina, 2015), Argentina (Rubinstein et al , 2016), and Iran (Ghavidel-Syooki, 2017a). Based on the shared species between assemblages, the highest similarity is with the Hirnantian cryptospore assemblage of the Paraná Basin (Rodrigues et al , 2022), with 53% of species in common, followed by Algeria (46%); Turkey (44.5%); Estonia (44%); southern Britain and Anticosti (37.5%), Argentina (33%); Belgium, Wales, Iran, and South China ( ca. 31%) and Saudi Arabia, Libya and the Czech Republic ( ca.…”

Section: Discussionmentioning

confidence: 99%

“…Saudi Arabia (Wellman et al, 2015), Algeria (Spina, 2015), Argentina (Rubinstein et al, 2016), and Iran (Ghavidel-Syooki, 2017a). Based on the shared species between assemblages, the highest similarity is with the Hirnantian cryptospore assemblage of the Paraná Basin (Rodrigues et al, 2022), with 53% of species in common, followed by Algeria (46%); Turkey (44.5%); Estonia (44%); southern Britain and Anticosti (37.5%), Argentina (33%); Belgium, Wales, Iran, and South China (ca. 31%) and Saudi Arabia, Libya and the Czech Republic (ca.…”

Section: Late Ordovician-early Silurian Cryptospore Assemblagesmentioning

confidence: 99%

“…A few Sandbian and Katian cryptospores have also been documented in the Precordillera Basin (Ottone et al , 1999; de la Puente & Rubinstein, 2013). Recently, a Hirnantian cryptospore assemblage was described for the Iapó Formation in the Paraná Basin, Brazil (Rodrigues et al , 2022).…”

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confidence: 99%

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First Record of Cryptospores from the Late Ordovician–Early Silurian of Colombia: New Contribution to the Understanding of Plant Terrestrialization

Rubinstein¹,

Vargas²,

Parra³

et al. 2023

Ameghiniana

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The present study involves the palynological analysis of Late Ordovician-early Silurian samples coming from two wells drilled in the Llanos Basin of Colombia. Thirteen core samples of well A yielded a moderately preserved cryptospore assemblage comprising 17 taxa. Although composed mainly of simple forms without stratigraphic value, the marine organic-walled phytoplankton allows us to constrain the age of the palynological assemblage from the Late Ordovician (Katian-Hirnatian) to the early Silurian. A ditch-cutting sample of well B yielded marine organic-walled phytoplankton and one trilete spore species. The marine phytoplankton suggests an age no older than early Silurian for the assemblage of well B. The paleoenvironment of well A, interpreted as a braided fluvial channel system with sporadic and slight tidal influence, is supported by palynological data. The distribution of palynomorphs also suggests an increasing marine influence from the bottom to the top of the studied section. The cryptospore assemblage constitutes the first record of cryptospores of Colombia and northern South America and, therefore, the oldest evidence of land plants in this region. The presence of the trilete spore Ambitisporites avitus in strata of probably early Silurian age would represent the first record of Silurian sediments in the Llanos Basin and the oldest record of trilete spores in Colombia.

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