期刊
DIATOM RESEARCH
卷 37, 期 3, 页码 255-262出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/0269249X.2022.2130993
关键词
Balkan Peninsula; Bugojno palaeolake; Middle Miocene; Rimocostatus; taxonomy
资金
- Rufford Foundation (London, Great Britain, GB) [34941-2]
- Alexander von Humboldt Foundation [AT-TAF 2669, GB-TAF]
- Synthesys project [AT-TAF 2669]
A new freshwater fossil diatom taxon, Rimocostatus bugojnicus gen. et sp. nov., from Miocene sediments in Bosnia and Herzegovina, is described. The species exhibits morphological features resembling both marine and freshwater species, making it an important find for understanding the evolution of centric diatom species.
A new freshwater fossil diatom taxon Rimocostatus bugojnicus gen. et sp. nov, from Miocene sediments at the Gracanica site, Bugojno palaeolake in Bosnia and Herzegovina, is described. The main morphological feature of the genus is the presence of marginal rimoportulae with simple, round external openings positioned on interfascicles on the valve mantle and stalked, large, wide internal slits, positioned on every costa. Marginal and valve face fultoportulae are absent. With these characteristics, the species shows similarities to both marine and freshwater species, known from recent, and primarily from fossil, diatom deposits. Thus, Rimocostatus bugojnicus gen. et sp. nov. is an important find for understanding the evolution of centric diatom species.
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