morphology and ontogeny of some middle ordovician gonambonitid brachiopods from baltoscandia
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ID: 217542
2018
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Abstract
The Volkhovian–Kunda boundary deposits of the Leningrad Region contain two closely related genera, Antigonambonites and Anchigonites. The latter genus was previously known only by valve moulds; here its shell exterior and interior, and ontogeny are described in detail based on the collection of well-preserved disarticulated valves of Anchigonites conulus. Antigonambonites and Anchigonites share similar developmental and morphological features, and ecological strategies including the attachment by cementation by a “pedicle tube” and are thus possibly phylogenetically related. A new diagnosis for the genus Anchigonites and description of A. conulus are provided; other species of Anchigonites are briefly revised. The moulds of outer epithelial cells are described for the first time for the class Strophomenata.
| Reference Key |
madison2018actamorphology
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|---|---|
| Authors | ;Anna A. Madison |
| Journal | the spine journal : official journal of the north american spine society |
| Year | 2018 |
| DOI |
10.4202/app.00488.2018
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| URL | |
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