2021
DOI: 10.1007/s12549-021-00486-z
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Redescription of the Sanqiaspidae (Galeaspida) from the Lower Devonian of South China and its biostratigraphic significance

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Cited by 3 publications
(1 citation statement)
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“…This indicates that a strong muscle probably for the velum was attached in this fossa. In addition, the whole oralobranchial chamber of galeaspids is closed posteriorly by a complete postbranchial wall (Wang, 1991;Janvier et al, 2009;Gai et al, 2022), which precludes tidal ventilation by the hypobranchial muscle. Therefore, a velum must have been present in galeaspids to provide ventilation from the oronasal cavity to the gill pouches as in osteostracans (Janvier, 1996b).…”
Section: Resultsmentioning
confidence: 99%
“…This indicates that a strong muscle probably for the velum was attached in this fossa. In addition, the whole oralobranchial chamber of galeaspids is closed posteriorly by a complete postbranchial wall (Wang, 1991;Janvier et al, 2009;Gai et al, 2022), which precludes tidal ventilation by the hypobranchial muscle. Therefore, a velum must have been present in galeaspids to provide ventilation from the oronasal cavity to the gill pouches as in osteostracans (Janvier, 1996b).…”
Section: Resultsmentioning
confidence: 99%