Taxonomic position of the superorder Fusulinoida Fursenko in the Foraminifera system

Mikhalevich, V. I.

doi:10.1134/s0031030109020014

Cited by 6 publications

(3 citation statements)

References 7 publications

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“… 13 ); scanning electron microscopy (SEM) has been used only rarely 8 – 10 . Furthermore, most studies of Paleozoic foraminifera have been based on recrystallized specimens characterized by obscure original test compositions (see also Mikhalevich 14 ). Such specimens typically display micrometer-sized neomorphic calcite/overgrowths on test surfaces and within their interiors 8 – 10 , 15 .…”

Section: Introductionmentioning

confidence: 99%

Unlocking the biomineralization style and affinity of Paleozoic fusulinid foraminifera

Dubicka

Gorzelak

2017

Sci Rep

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Fusulinids are the most diverse, abundant and geographically widespread Paleozoic foraminifera which are widely considered to possess a “homogeneously microgranular” test microstructure composed of subangular grains of several micrometers in size. However, this texture appears to be a diagenetic artifact. Here we describe well-preserved Devonian calcareous fusulinids (Nanicella) from the Holy Cross Mountains (HCM) in central Poland. Foraminifera from Poland in which the primary nature of tests have not been masked by diagenesis are composed of low magnesium calcite spherical grains up to about 100 nanometers in diameter, identical to those observed in Recent and fossil hyaline foraminifera (Rotaliida, Globothalamea). These data call the paradigm of microgranular test microstructure of Foraminifera into question, and suggest a possible phylogenetic relationship between globothalamids and some fusulinids.

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Section: Introductionmentioning

confidence: 99%

Unlocking the biomineralization style and affinity of Paleozoic fusulinid foraminifera

Dubicka

Gorzelak

2017

Sci Rep

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“…However, the test structures of many different Fusulinata groups have not been documented. Most of their wall structure especially in the case of Silurian–Devonian fossils, is significantly obscured by diagenesis, presenting recrystallised rather than original textures (Mikhalevich ; Vachard et al . ).…”

Section: Discussionmentioning

confidence: 99%

Extinction of nanicellid foraminifera during the Frasnian–Famennian biotic crisis: some far‐reaching evolutionary consequences

Dubicka

2018

LET

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This study evaluates the severity of the poorly known and mostly underestimated foraminiferal extinction during the Frasnian-Famennian biotic crisis and its evolutionary aftermath. During this global event, worldwide, truly plurilocular planispiral (Nanicellidae) and uniseriate, palmate (Semitextulariidae) foraminifera associated with metazoan reefs died out entirely. Highly advanced test morphology such as that of nanicellids did not reappear in the earth's history until the Late Triassic. Moreover, morphotype comparable to that of the Devonian bilaterally flattened and palmate semitextularids appeared again until the Middle Jurassic (Frondicularia, Lagenida). In terms of the degree of test septation and chamber arrangement as well as general test shape, these foraminifera were 'very far ahead of their time'. In consequence, foraminifera suffered a significant collapse during the F-F biodiversity crisis, leading to an amazingly long evolutionary time lag in the case of plurilocular foraminifera lasting at least 150 million years. □ biotic crisis, Devonian, extinction, foraminifera, Frasnian-Famennian.Zofia Dubicka ✉ [z.dubicka@uw.edu.pl],

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“…It entails uncertainties in the phylogenetic relationships between homeomorphic specimens (see Mikhalevich, 2009). The study of simple tubular homeomorphs, which only differ in their wall characteristics, appears to be an effective means to evaluate whether homeomorphism is related to evolutionary convergence, a parallelism, or a wall reversal.…”

Section: Convergence Parallelism or Reversal?mentioning

confidence: 99%

Agglutinated or Porcelaneous Tests: Where to Draw the Line?

Rigaud

Martini

2016

Journal of Foraminiferal Research

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Taxonomic position of the superorder Fusulinoida Fursenko in the Foraminifera system

Cited by 6 publications

References 7 publications

Unlocking the biomineralization style and affinity of Paleozoic fusulinid foraminifera

Unlocking the biomineralization style and affinity of Paleozoic fusulinid foraminifera

Extinction of nanicellid foraminifera during the Frasnian–Famennian biotic crisis: some far‐reaching evolutionary consequences

Agglutinated or Porcelaneous Tests: Where to Draw the Line?

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