Representatives of the genus Triploporella (Dasycladales, calcareous algae) in the Lower Cretaceous limestones of Romania

Bucur, Ioan I.; Bruchental, Călin; Cociuba, Ioan; Granier, Bruno; Hebriştean, Anca-Mariana; Lazar, Daniel-Florin; Marian, Alexandru Vlad; Săsăran, Emanoil

doi:10.1007/s10347-012-0334-0

Cited by 4 publications

(5 citation statements)

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“…In this situation, it is difficult to justify attribution of a species to Dragastanella n. gen. or Triploporella. For example, Triploporella carpatica Bucur, 1993(Bucur et al, 2013 resembles Dragastanella transylvanica n. gen. n. sp., but mineralization stops before the ; D, outer diameter; l, length of the primary lateral; p iw , whorl width of the first tract of the primary lateral; p w , whorl width of the primary lateral (maximum diameter); h, height between whorls; w, number of laterals in a whorl; cystophore Eq., equatorial diameter of the cystophores; cystophore Ax, axial diameter of the cystophores; cyst diameter, axial diameter of cysts.…”

Section: Journal Of Paleontology:1-17mentioning

confidence: 99%

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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: Journal Of Paleontology:1-17mentioning

confidence: 99%

Section: Systematic Paleontologymentioning

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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“…The fossil Family Triploporellaceae (Pia, 1920) groups euspondyl Dasycladalean algae with either endosporate (cysts were located in the main axis of these ancestral forms) or cladosporate (cysts or cyst‐containers were located in the primary laterals of these advanced forms) reproductive features, according to the revised classification of Granier and Bucur (in Granier et al, ). Triploporella Steinmann, , with some ten species spanning the Late Jurassic to the Paleocene interval (Deloffre & Granier, ; Granier & Deloffre, ) but with an acme in the late Early Cretaceous (Barremian–Aptian) times (Bucur et al, ; Granier & Deloffre, ), and Salpingoporella (Pia, ) with some thirty species (Carras, Conrad, & Radoičić, ; Granier & Deloffre, ) represent the most prolific genera among the Family Triploporellaceae. The type species of Triploporella Steinmann, , is T. fraasi Steinmann, .…”

Section: Preliminary Remarks On the Triploporellaceae (Pia )mentioning

confidence: 99%

“…Triploporella Steinmann, 1880, with some ten species spanning the Late Jurassic to the Paleocene interval (Deloffre & Granier, 1992;Granier & Deloffre, 1993) but with an acme in the late Early Cretaceous (Barremian-Aptian) times (Bucur et al, 2013;Granier & Deloffre, 1993), and Salpingoporella (Pia, 1917) with some thirty species (Carras, Conrad, & Radoičić, 2006;Granier & Deloffre, 1993)…”

Section: Geological Settingmentioning

confidence: 99%

Triploporella ? edgelli n. sp., a new Dasycladalean alga from the Lower Cretaceous of Lebanon

2017

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The Dasycladalean assemblage of the Jezzinian strata (uppermost Barremian–lowermost Aptian) of Lebanon consists of two organo‐genera and eight genera with eleven species, including eight Triploporellaceae. Although Triploporella marsicana (Praturlon, 1964) was reported by Saint‐Marc from the same interval, it is not found in our material. However, a lookalike, which is herein described as Triploporella ? edgelli n. sp., is identified. This new species has cyst‐containers within the primary segments of its laterals but, because it lacks calcified secondary segments, it is left in open nomenclature.

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“…Representatives of the genus Triploporella from Lower Cretaceous rocks in Romania were studied by Bucur et al (2013). The authors used this opportunity to review some species previously assigned by various authors to Triploporella; according to the current results, they should be either affiliated to other genera through new combinations, or excluded from the genus.…”

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confidence: 99%

A panorama of the fossil algae: from cyanobacteria and calcimicrobes to the green calcareous algae

Bucur¹,

Fürsich²

2012

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Representatives of the genus Triploporella (Dasycladales, calcareous algae) in the Lower Cretaceous limestones of Romania

Cited by 4 publications

References 3 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

Triploporella ? edgelli n. sp., a new Dasycladalean alga from the Lower Cretaceous of Lebanon

A panorama of the fossil algae: from cyanobacteria and calcimicrobes to the green calcareous algae

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