The oldest iocrinid crinoids from the Early/Middle Ordovician of China: Possible paleogeographic implications

Lin, Jih‐Pai; Ausich, William I.; Baliński, Andrzej; Bergström, Stig M.; Sun, Yongqi

doi:10.1016/j.jseaes.2017.10.041

Cited by 3 publications

(7 citation statements)

References 43 publications

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“…Furthermore, if derived families with distinctive attributes (e.g., Calceocrinidae, Zophocrinidae) are eliminated, the only families with two adjacent simple radial plates are the Cincinnaticrinidae (Ordovician, 11212 radial circlet configuration), Columbicrinidae (Columbicrinidae (Ordovician, 11212), Iocrinidae (Ordovician–Silurian, 11211), Maennilicrinidae (Ordovician, 11111), and Tornatilicrinidae (Ordovician, 11211). Of these families, only the Iocrinidae and Cincinnaticrinidae have taxa with distinctive depressions along the aboral cup sutures; and most Cincinnaticrinidae have an aboral cup that is proportionally much higher than iocrinids and Tartucrinus n. gen. Further, taxa in the five families noted above nearly all have plenary radial facets, except iocrinids, of which Iocrinus Hall, 1866, Muicrinus Lin et al, 2018, Schaldichocrinus Rozhnov, 1997, and Westheadocrinus Donovan, 1989 have peneplenary radial facets. Finally, and certainly not an absolute criterion, of the families considered, only the Iocrinidae ranges into the Silurian.…”

Section: Systematic Paleontologymentioning

confidence: 94%

Kalana Lagerstätte crinoids: Early Silurian (Llandovery) of central Estonia

2019

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The Kalana Lagerstätte of early Aeronian (Llandovery, Silurian) age in central Estonia preserves a diverse shallow marine biota dominated by non-calcified algae. This soft-tissue flora and decalcified and calcified crinoids are preserved in situ, in a lens of microlaminated, dolomitized micrite interbedded in a sequence of dolomitized packstones and wackestones. Although the Lagerstätte is dominated by non-calcified algae, crinoids (together with brachiopods and gastropods) are among the most common organisms that were originally comprised of a carbonate skeleton. Two new crinoids are described from this unit, Kalanacrinus mastikae n. gen. n. sp. (large camerate) and Tartucrinus kalanaensis n. gen. n. sp. (small disparid). Interestingly, these two crinoids display contrasting preservation, with the more common large camerate preserved primarily as a decalcified organic residue, whereas the smaller disparid is preserved primarily in calcite. Preservation was assessed using elemental mapping of C, Ca, S, and Si. Columns have the highest portion of Ca, once living soft tissue is indicated by C, S was dispersed as pyrite or associated with organics, and Si is probably associated with clay minerals in the matrix. This new fauna increases our understanding of the crinoid radiation on Baltica following Late Ordovician extinctions.UUID: http://zoobank.org/fb1f98c4-d35a-43f4-aa0d-75e4f8154a13

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Section: Systematic Paleontologymentioning

confidence: 94%

Kalana Lagerstätte crinoids: Early Silurian (Llandovery) of central Estonia

2019

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“…), disparids (Ausich ) and iocrinids (Lin et al . ). As a result of these combined efforts, the phylogeny of fossil crinoids is better understood than that of most Palaeozoic marine invertebrates.…”

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confidence: 97%

Phylogeny and evolutionary history of diplobathrid crinoids (Echinodermata)

Cole

2018

Palaeontology

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Order Diplobathrida is a major clade of camerate crinoids spanning the Ordovician–Mississippian, yet phylogenetic relationships have only been inferred for Ordovician taxa. This has hampered efforts to construct a comprehensive tree of life for crinoids and develop a classification scheme that adequately reflects diplobathrid evolutionary history. Here, I apply maximum parsimony and Bayesian phylogenetic approaches to the fossil record of diplobathrids to infer the largest tree of fossil crinoids to date, with over 100 genera included. Recovered trees provide a framework for evaluating the current classification of diplobathrids. Notably, previous suborder divisions are not supported, and superfamily divisions will require significant modification. Although numerous revisions are required for families, most can be retained through reassignment of genera. In addition, recovered trees were used to produce phylogeny‐based estimates of diplobathrid lineage diversity. By accounting for ghost lineages, phylogeny‐based richness estimates offer greater insight into diversification and extinction dynamics than traditional taxonomy‐based approaches alone and provide a detailed summary of the ~150 million‐year evolutionary history of Diplobathrida. This study constitutes a major step toward producing a phylogeny of the Crinoidea and documenting crinoid diversity dynamics. In addition, it will serve as a framework for subsequent phylogeny‐based investigations of macroevolutionary questions.

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“…The iocrinids, one of the widespread disparids with predominant records from the Upper Ordovician of Laurentia, have been reported from Middle Ordovician strata in the Gondwana region (Lin et al, 2018, table 3). The wide distribution may be attributed to a dispersal during a probably planktonic or free-swimming larval stage (Nakano et al, 2003) by paleoceanic currents (Servais et al, 2014, fig.…”

Section: Biostratigraphy Paleobiogeography and Taphonomymentioning

confidence: 99%

“…It is of interest that recent studies supposed a close paleobiogeographic link or geographic closeness of Laurentia with South and North China. Lin et al (2018) performed a cladistic analysis of the iocrinids, and the resultant cladogram shows a sister-group relationship of Muicrinus Lin et al, 2018 from South China and Westheadocrinus Donovan, 1989 from Laurentia. It is of interest that they interpreted the relationship as suggesting a possible, although unsubstantiated, paleobiogeographic connection between the two areas.…”

Section: Biostratigraphy Paleobiogeography and Taphonomymentioning

confidence: 99%

“…They concluded that decrease of siliciclastic sediment input related to shallowing water depth is correlated with occurrence of larger, more robust crinoids. Ohiocrinus byeongseoni from South Korea is distinguished from other species by its loosely clockwise-coiled anal sac and isotomous arm branching pattern, and Muicrinus dawanensis Lin et al, 2018 from South China is distinguished from other iocrinids by its helically coiled column and smooth anal sac plates (Lin et al, 2018). The function of these morphologic features of the Gondwanan taxa occurring in siliciclastic deposits in relation to water depth and sediment type is yet to be revealed.…”

Section: Biostratigraphy Paleobiogeography and Taphonomymentioning

confidence: 99%

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The first Middle Ordovician and Gondwanan record of the cincinnaticrinid crinoidOhiocrinus byeongseonin. sp. from South Korea: biostratigraphy, paleobiogeography, and taphonomy

et al. 2022

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Ohiocrinus byeongseoni n. sp. from the Middle Ordovician (Darriwilian) Jigunsan Formation of South Korea in the Sino-Korean (North China) block is the oldest species of Ohiocrinus of the Cincinnaticrinidae and the first record outside Laurentia. O. byeongseoni is characterized by a loosely clockwise-coiled anal sac, isotomous branching throughout arms, long, slender xenomorphic column, and small lichenocrinid-type holdfast. The new species occurs in association with a deep-water siliciclastic environment, unlike the Laurentian species with a shallow-water carbonate environment. The monospecific crinoid assemblage is interpreted as parautochthonous, considering that the crinoids were reworked by relatively weak down-current probably caused by storm but preserved within the environment where they lived. The occurrence of O. byeongseoni presents a considerable spatiotemporal gap and ecologic disparity in evolution of Ohiocrinus and the Cincinnaticrinidae. UUID: http://zoobank.org/240417a4-8d33-4f45-aedb-afcc07f1ecbb

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The oldest iocrinid crinoids from the Early/Middle Ordovician of China: Possible paleogeographic implications

Cited by 3 publications

References 43 publications

Kalana Lagerstätte crinoids: Early Silurian (Llandovery) of central Estonia

Kalana Lagerstätte crinoids: Early Silurian (Llandovery) of central Estonia

Phylogeny and evolutionary history of diplobathrid crinoids (Echinodermata)

The first Middle Ordovician and Gondwanan record of the cincinnaticrinid crinoidOhiocrinus byeongseonin. sp. from South Korea: biostratigraphy, paleobiogeography, and taphonomy

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