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The oldest mineralized bryozoan? A possible palaeostomate in the lower Cambrian of Nevada, USAстатья Исследовательская статья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 11 мая 2022 г.
- Авторы: Pruss Sara B., Leeser Lexie, Smith Emily F., Zhuravlev Andrey Yu, Taylor Paul D.
- Журнал: Science Advances
- Том: 8
- Номер: 16
- Год издания: 2022
- Первая страница: 1
- Последняя страница: 8
- Номер статьи: eabm8465
- DOI: 10.1126/sciadv.abm8465
- Аннотация: All skeletal marine invertebrate phyla appeared during the Cambrian explosion, except for Bryozoa with mineralized skeletons, which first appear in the Early Ordovician. However, the skeletal diversity of Early Ordovician bryozoans suggests a preceding interval of diversification. We report a possible earliest occurrence of palaeostomate bryozoans in limestones of the Cambrian Age 4 Harkless Formation, western United States. Following recent interpretations of the early Cambrian Protomelission as a soft-bodied bryozoan, our findings add to the evidence of early Cambrian roots for the Bryozoa. The Harkless fossils resemble some esthonioporate and cystoporate bryozoans, showing a radiating pattern of densely packed tubes of the same diameter and cross-sectional shape. Further, they show partitioning of new individuals from parent tubes through the formation of a separate wall, a characteristic of interzooecial budding in bryozoans. If confirmed as bryozoans, these fossils would push back the appearance of mineralized skeletons in this phylum by ~30 million years and impact interpretations of their evolution.
- Добавил в систему: Журавлев Андрей Юрьевич