Le genre Bakalovaella Bucur, 1993 (Dasycladeae, Dasycladaceae), et description de son plus ancien représentant crétacé

Granier, Bruno; Bucur, Ioan I.

doi:10.4267/2042/69540

Cited by 4 publications

(2 citation statements)

References 6 publications

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“…The dense package of primary laterals and gametophores produces compound pores (Barattolo, 2019). In this case, the specimen must be attributed to genus Bakalovaella , and referred to the family Dasycladaceae (Granier and Bucur, 2019).…”

Section: Deciphering Voids and Taxonomic Implicationmentioning

confidence: 99%

Deciphering voids in Dasycladales, the case of Dragastanella transylvanica, a new Lower Cretaceous triploporellacean genus and species from Romania

2021

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Dragastanella transylvanica n. gen. n. sp. is described. Its calcified skeleton contains numerous voids, partly related to the molds of soft parts of the alga, but also related to lack of calcification. Interpretation of these voids, especially their attribution to original structures (e.g., primary lateral versus reproductive organ), has important implications for the taxonomic position of the alga, even at the family level. Examination of key sections that include the boundary between sterile and fertile parts of the alga excludes the occurrence of external reproductive organs. Unusual, paired pores in the outer part of the mineralized skeleton reflect an asymmetry within the whorl, excluding the presence of secondary laterals. The alga is characterized by a cylindrical to club-shaped thallus bearing only phloiophorous primary laterals arranged in whorls and flaring outwards, forming a cortex. Mineralized lenticular reproductive organs containing cysts set in the equatorial plane (Russoella-type gametophores) occur inside primary laterals (cladosporous arrangement of the reproductive organs). These characters support establishment of the new genus Dragastanella. Dragastanella transylvanica n. gen. n. sp. resembles species previously referred to Zittelina (Zittelina hispanica and Zittelina massei) and Triploporella (Triploporella matesina and Triploporella carpatica). Except for Triploporella carpatica, whose mineralized skeleton does not permit confident attribution to either Triploporella or Dragastanella n. gen., the other species must be ascribed to Dragastanella n. gen. Therefore, the following new combinations are proposed: Dragastanella hispanica n. comb., Dragastanella massei n. comb., and Dragastanella matesina n. comb. Despite widely overlapping biometrical measurements, these species can be differentiated by the size and location of their reproductive organs, the pattern of calcification around the primary laterals, and relationships among structural parameters such as the size of laterals, number of laterals per whorl, and distance between whorls.

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Section: Deciphering Voids and Taxonomic Implicationmentioning

confidence: 99%

Deciphering voids in Dasycladales, the case of Dragastanella transylvanica, a new Lower Cretaceous triploporellacean genus and species from Romania

2021

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“…However, numerous paleoalgologists avoided its attribution to the genus Bakalovaella and preferred to assign it to Montiella. Subsequently, some authors (Taherpour Khalil Abad et al, 2010;Bucur, 2011) questioned once more the attribution of the species elitzae to the genus Montiella, and recently Granier & Bucur (2019) reinstated the genus Bakalovaella based on the species Bakalovaella deloffrei Granier & Bucur, and revalidated the combination Bakalovaella elitzae (Bucur, 1993).…”

Section: Remarks On Selected Microfossilsmentioning

confidence: 99%

The Lower Cretaceous Tirgan Formation in the Gelian Section (Kopet Dagh, North Iran): Microfacies, Microfossils, and Their Biostratigraphic Significance

Bucur¹,

Yarahmadzahi²,

Mircescu³

2019

Actapalrom

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The carbonate succession of the Tirgan Formation was studied in the Gelian section located 25 km south of Shirvan town (central Kopet Dagh). In this section, the Tirgan Formation contains a rich assemblage of calcareous algae and foraminifera. Based mainly on the orbitolinid association a latest Barremian-ealy Aptian age was assigned to the Tirgan Formation in the Gelian section. Based on the available stratigraphic analyses and age assignments of the overlying Sarcheshmeh Formation by different authors, one should presume that both the Tirgan and the Sarcheshmeh formations are heterochronous across the Kopet Dagh basin.

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Revised dating of the major earliest Cretaceous transgression in S Aquitaine (SW France)

Granier

Clavel²

2019

Cretaceous Research

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Le genre Bakalovaella Bucur, 1993 (Dasycladeae, Dasycladaceae), et description de son plus ancien représentant crétacé

Cited by 4 publications

References 6 publications

Deciphering voids in Dasycladales, the case of Dragastanella transylvanica, a new Lower Cretaceous triploporellacean genus and species from Romania

Deciphering voids in Dasycladales, the case of Dragastanella transylvanica, a new Lower Cretaceous triploporellacean genus and species from Romania

The Lower Cretaceous Tirgan Formation in the Gelian Section (Kopet Dagh, North Iran): Microfacies, Microfossils, and Their Biostratigraphic Significance

Revised dating of the major earliest Cretaceous transgression in S Aquitaine (SW France)

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