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Two new Mesodictyopsis species, M. akitaensis sp. nov. and M. miyatanus sp. nov., from a Late Miocene to Pliocene freshwater sediment, Japan

Hiroyuki Tanaka ; Maebashi Diatom Institute, 57-3 Kawamagari, Maebashi, Gunma 371-0823, Japan
Tamotsu Nagumo ; Department of Biology, The Nippon Dental University, Fujimi 1-9-20, Chiyoda-ku, Tokyo 102-8159, Japan

Puni tekst: engleski, pdf (517 KB) str. 221-230 preuzimanja: 420* citiraj
APA 6th Edition
Tanaka, H. i Nagumo, T. (2009). Two new Mesodictyopsis species, M. akitaensis sp. nov. and M. miyatanus sp. nov., from a Late Miocene to Pliocene freshwater sediment, Japan. Acta Botanica Croatica, 68 (2), 221-230. Preuzeto s https://hrcak.srce.hr/41425
MLA 8th Edition
Tanaka, Hiroyuki i Tamotsu Nagumo. "Two new Mesodictyopsis species, M. akitaensis sp. nov. and M. miyatanus sp. nov., from a Late Miocene to Pliocene freshwater sediment, Japan." Acta Botanica Croatica, vol. 68, br. 2, 2009, str. 221-230. https://hrcak.srce.hr/41425. Citirano 28.10.2021.
Chicago 17th Edition
Tanaka, Hiroyuki i Tamotsu Nagumo. "Two new Mesodictyopsis species, M. akitaensis sp. nov. and M. miyatanus sp. nov., from a Late Miocene to Pliocene freshwater sediment, Japan." Acta Botanica Croatica 68, br. 2 (2009): 221-230. https://hrcak.srce.hr/41425
Harvard
Tanaka, H., i Nagumo, T. (2009). 'Two new Mesodictyopsis species, M. akitaensis sp. nov. and M. miyatanus sp. nov., from a Late Miocene to Pliocene freshwater sediment, Japan', Acta Botanica Croatica, 68(2), str. 221-230. Preuzeto s: https://hrcak.srce.hr/41425 (Datum pristupa: 28.10.2021.)
Vancouver
Tanaka H, Nagumo T. Two new Mesodictyopsis species, M. akitaensis sp. nov. and M. miyatanus sp. nov., from a Late Miocene to Pliocene freshwater sediment, Japan. Acta Botanica Croatica [Internet]. 2009 [pristupljeno 28.10.2021.];68(2):221-230. Dostupno na: https://hrcak.srce.hr/41425
IEEE
H. Tanaka i T. Nagumo, "Two new Mesodictyopsis species, M. akitaensis sp. nov. and M. miyatanus sp. nov., from a Late Miocene to Pliocene freshwater sediment, Japan", Acta Botanica Croatica, vol.68, br. 2, str. 221-230, 2009. [Online]. Dostupno na: https://hrcak.srce.hr/41425. [Citirano: 28.10.2021.]

Sažetak
Two new Mesodictyopsis species, M. akitaensis sp. nov. and M. miyatanus sp. nov., are described from freshwater sediment of the Late Miocene to Pliocene Miyata Formation, northern Honshu, Japan. The species are characterized by small size, veluma on inner side of areolae, one fultoportula (sometimes two in M. akitaensis) on central valve face with two (in rare cases three in M. miyatanus) satellite pores, mantle fultoportulae with three satellite pores located on upper mantle close to valve face/mantle junction. Single rimoportula located in a row of areolae on marginal valve face near valve face/mantle junction in M. akitaensis or valve face/mantle junction on a strip in M. miyatanus. The veluma of M. akitaensis are cribra in inner view and sometimes volae on marginal valve face in outer view while those of M. miyatanus are cribra in both inner and outer view. The two species are compared with two similar reported Mesodictyopsis taxa.

Ključne riječi
fossil; diatom; Mesodictyopsis; ultrastructure; Lake Tazawa; Miyata Formation; Japan

Hrčak ID: 41425

URI
https://hrcak.srce.hr/41425

Posjeta: 690 *