Skeletogenesis and asexual reproduction in the earliest biomineralizing animal Cloudina

Hong, Hui; Chen, Zhe; Yuan, Xunlai; Luyi, Zhang; Xiao, Shuhai

doi:10.1130/g21198.1

Cited by 164 publications

(135 citation statements)

References 19 publications

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“…5A) suggest that Cloudina is not closely related to any Recent calcareous polychaetes (serpulids, sabellids or cirratulids) (Vinn and Zatoń, 2012a). The type of asexual reproduction and presence of a closed tube base in Cloudina is more compatible with the hypothesis of an animal of cnidarian grade (Hua et al, 2005;Vinn and Zatoń, 2012a;Zhuravlev et al, 2012).…”

Section: False Serpulids: Tubular Fossils Below the Precambriancambrisupporting

confidence: 64%

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Written in stone: history of serpulid polychaetes through time

et al. 2014

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Ippolitov, A.P., Vinn, O., Kupriyanova, E.K. and Jäger, M. 2014. Written in stone: history of serpulid polychaetes through time. Memoirs of Museum Victoria 71: 123-159.Although the fossil record of annelids in general is poor, calcareous tube-building Serpulidae are a notable exception. The "stumbling block" of understanding the serpulid fossil record is obtaining reliable taxonomic interpretations of fossil tubes based on morphology. Luckily, serpulid tubes demonstrate high variety of ultrastructures and nonuniform mineralogical composition, which can be used as new tools for decrypting the fossil record. Ancient Late Ediacaran (580-541 Ma) and Paleozoic (541-252 Ma) rocks contain diverse tubicolous fossils that have often been erroneously interpreted as annelids, and serpulids, in particular. Palaeozoic to Middle Jurassic coiled spirorbiform tubes, often referred to as Spirorbis, had been shown to be microconchids, a group of probable lophophorate affinity. The most ancient records of unequivocal serpulids date back to the Middle Triassic (~244 Ma) of the Mesozoic, and from the Earliest Jurassic (~200 Ma) fossil serpulids become common. From the latest Jurassic (~146 Ma) serpulids colonised hydrocarbon seep environments and possibly also penetrated the deep sea. Concerted efforts of paleontologists and zoologists are needed for further understanding of serpulid evolutionary history. The serpulid fossil record can become a valuable instrument for calibration of "molecular clocks" in polychaetes, which would allow dating not only divergence events in serpulids, but also in annelid groups that lack a representative fossil record.

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Section: False Serpulids: Tubular Fossils Below the Precambriancambrisupporting

confidence: 64%

“…6A), the most famous tube-building metazoan common in deposits of the terminal Neoproterozoic Ediacaran Period (549-541 Ma), has often been affiliated with serpulids (Germs, 1972;Glaessner, 1976;Hua et al, 2005). Tube morphology and microgranular ultrastructure ( fig.…”

Section: False Serpulids: Tubular Fossils Below the Precambriancambrimentioning

confidence: 99%

Written in stone: history of serpulid polychaetes through time

et al. 2014

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“…Biostratinomic analysis of the Gaojiashan biota indicates that rapid event deposition played a key role in the exceptional preservation of Gaojiashan fossils 11 . The Gaojiashan biota is dominated by weakly biomineralized to non-biomineralized tubular and ribbon-like fossils (for example, Cloudina, Conotubus, Gaojiashania, Shaanxilithes and Sinotubulites), and also includes protolagenid microfossils, algal debris, ichnofossils and microbial mat textures 11,28,[53][54][55][56][57][58][59] . The focus of this study, Conotubus hemiannulatus, is currently only known from the Gaojiashan Lagerstätte.…”

Section: Methodsmentioning

confidence: 99%

A unifying model for Neoproterozoic–Palaeozoic exceptional fossil preservation through pyritization and carbonaceous compression

et al. 2014

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“…2 B and C), and a rare Ediacara fossil described as Paracharnia dengyingensis (22,24,25). The biomineralized tubular fossil Sinotubulites baimatuoensis occurs in the uppermost Shibantan or lowermost Baimatuo members (24,26), and Cloudina hartmannae occurs in correlative strata elsewhere in South China (27,28). The Dengying Formation is overlain by chert, phosphorite, and dolostone of the Yanjiahe Formation, which contains basal Cambrian acritarchs and small shell fossils (29)(30)(31).…”

Section: Geological and Stratigraphic Settingmentioning

confidence: 99%