New encrusting tentaculitoids from the Silurian of Estonia and taxonomic status of <i>Anticalyptraea</i> Quenstedt, 1867

Zatoń, Michał; Vinn, Olev; Toom, Ursula; Słowiński, Jakub

doi:10.1080/11035897.2022.2042378

Cited by 5 publications

(1 citation statement)

References 14 publications

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“…Encrusting tentaculitoid tubeworms were all suspension feeders and belonged to the lophophorates (Taylor et al, 2010; Vinn and Zatoń, 2012). Among the encrusting tentaculitoid tubeworms, microconchids (Zatoń and Olempska, 2017) and anticalyptraeids (Zatoń et al, 2022, 2023) have spiral tubes that differ from tubes of Porkuniconchus . However, cornulitids have conical nonspiral tubes that are almost identical to the tubes of Porkuniconchus .…”

Section: Discussionmentioning

confidence: 99%

A new genus and species of cornulitid tubeworm from the Hirnantian (Late Ordovician) of Estonia

Vinn,

Wilson,

Toom

2024

J. Paleontol.

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A new cornulitid genus and species, Porkuniconchus fragilis new genus and species, is here described from the Ärina Formation (Hirnantian, Porkuni Regional Stage) of northern Estonia. This new taxon differs from most cornulitids by having a fusiform ornamentation pattern that is somewhat similar to that of Kolihaia. All studied specimens are attached to a carbonate hardground. The hardground fauna is by abundance and encrustation area dominated by cornulitids. Other encrusters are represented only by a single sheet-like cystoporate bryozoan. The cornulitid specimens represent different growth stages, which suggest that the hardground was continuously colonized by cornulitid larvae. The high encrustation density indicates that the studied hardground may have represented a high-productivity site in the Hirnantian of the Baltic Basin. UUID: http://zoobank.org/623afcc3-ab32-4e8f-be14-a1093cba4ae6

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