2006
DOI: 10.1073/pnas.0607824103
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Confirmation of Romer's Gap as a low oxygen interval constraining the timing of initial arthropod and vertebrate terrestrialization

Abstract: The first terrestrialization of species that evolved from previously aquatic taxa was a seminal event in evolutionary history. For vertebrates, one of the most important terrestrialized groups, this event was interrupted by a time interval known as Romer's Gap, for which, until recently, few fossils were known. Here, we argue that geochronologic range data of terrestrial arthropods show a pattern similar to that of vertebrates. Thus, Romer's Gap is real, occupied an interval from 360 million years before prese… Show more

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Cited by 132 publications
(112 citation statements)
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References 28 publications
(28 reference statements)
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“…This period is generally known as Romer's Gap. It has been hypothesized that the absence of terrestrial arthropods and tetrapods is related to low oxygen levels, which inhibited these animals with poorly developed respiratory structures from leaving the water (Ward et al 2006). Whether this hypothesis can be maintained or whether the absence of terrestrial fauna is …”
Section: General Discussion and Concluding Remarksmentioning
confidence: 99%
See 1 more Smart Citation
“…This period is generally known as Romer's Gap. It has been hypothesized that the absence of terrestrial arthropods and tetrapods is related to low oxygen levels, which inhibited these animals with poorly developed respiratory structures from leaving the water (Ward et al 2006). Whether this hypothesis can be maintained or whether the absence of terrestrial fauna is …”
Section: General Discussion and Concluding Remarksmentioning
confidence: 99%
“…The Brigantian (late Viséan) marks the start of an increased radiation of terrestrial arthropods (Ward et al 2006) and tetrapods (Smithson et al 2012) after a time interval reaching from the latest Devonian to the Holkerian (~middle Viséan) that is characterized by a general absence of terrestrial arthropods and tetrapods. This period is generally known as Romer's Gap.…”
Section: General Discussion and Concluding Remarksmentioning
confidence: 99%
“…A construção progressiva desta camada protetora de ozono, a partir de há uns 2 mil Ma (e.g., Glikson, 2014;Maruyamab et al, 2014) ou mesmo antes, talvez há cerca de 2,6 Ma (Watanabe et al, 2000;Cockell & Raven, 2007), juntamente com o enriquecimento da atmosfera em oxigénio, permitiu que as formas de vida migrassem até às camadas superficiais do oceano, viabilizando a proliferação do fitoplâncton, sendo mesmo possível que, nessa altura, tivessem ocorrido as primeiras tentativas de colonização de áreas emersas (Cockell & Raven, 2007). Há cerca de mil Ma ocorreu outro GOE, normalmente conhecido por Evento Neoproterozoico de Oxigenação (e.g., Ward et al, 2006;Shields-Zhou & Och, 2010), que, progressivamente, criou condições para que, mais tarde, com início há cerca de 600 Ma, se verificasse o aparecimento de forma complexas de vida, cuja "explosão" se verificou no Câmbrico, há cerca de 541 (e.g., Marshall, 2006;Butterfield, 2007;BaudouinCornu & Thomas, 2007). Depois dessa altura, o oxigénio atmosférico continuou a ser um fator determinante na progressiva adaptação da vida, nomeadamente dos artrópodes e vertebrados, aos ambientes terrestres (e.g., Ward et al, 2006;Baudouin-Cornu & Thomas, 2007).…”
Section: Das Dinâmicas Naturaisunclassified
“…Há cerca de mil Ma ocorreu outro GOE, normalmente conhecido por Evento Neoproterozoico de Oxigenação (e.g., Ward et al, 2006;Shields-Zhou & Och, 2010), que, progressivamente, criou condições para que, mais tarde, com início há cerca de 600 Ma, se verificasse o aparecimento de forma complexas de vida, cuja "explosão" se verificou no Câmbrico, há cerca de 541 (e.g., Marshall, 2006;Butterfield, 2007;BaudouinCornu & Thomas, 2007). Depois dessa altura, o oxigénio atmosférico continuou a ser um fator determinante na progressiva adaptação da vida, nomeadamente dos artrópodes e vertebrados, aos ambientes terrestres (e.g., Ward et al, 2006;Baudouin-Cornu & Thomas, 2007). Após o Câmbrico, a composição da atmosfera nunca mais sofreu variações extremas, embora as quantidades relativas dos seus componentes tenham conhecido variações notáveis em função de um conjunto complexo de fatores, entre os quais, as glaciações, a geometria dos continentes, as erupções vulcânicas, as áreas cobertas por vegetação e os impactos meteoríticos.…”
Section: Das Dinâmicas Naturaisunclassified
“…More recently, the evolution of lignin degradation in basidiomycete fungi was traced via phylogenomic methods and relaxed molecular clock estimates to the Permian (13,14), offering support for a fungi-mediated decrease in coal formation following the Carboniferous (13). The wholesale or partial attribution of the Carboniferous−Permian peak in coal production to this evolutionary lag between lignin synthesis and fungal degradation of lignin has been widely promulgated (8,(15)(16)(17)(18)(19)(20)(21)(22), reflecting the growing interest in life−Earth feedbacks over geological timescales (23)(24)(25)(26)(27)(28). Such geobiological hypotheses sometimes persist based largely on the strength of their novelty, without sufficient predictive testing.…”
mentioning
confidence: 99%