Suprageneric Classification of the Foraminiferida (Protozoa)

Loeblich, Alfred R.; Tappan, Helen

doi:10.2307/1485456

Cited by 147 publications

(45 citation statements)

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“…Later on, T. N. Gorbachik published a special study on the wall structure of Globuligerina oxfordia na (Grigelis) showing on SEM pictures the densely pustulose wall sculptured by thick cones or short ridges and the radially crystalline calcite wall with 1 µm microcrystal plates isolated by an organic membrane (Gorbachik, 1983). Just a year later, Loeblich and Tappan (1984) introduced a new family Globuligerinidae, especially collecting Jurassic globigerina-like foraminifera.…”

Section: Base Data On Globuligerina Oxfordiana (Grigelis)mentioning

confidence: 99%

Globuligerina oxfordiana (Grigelis, 1958) – revision of the first planktonic foraminifera discovered in the Upper Jurassic of Lithuania

Grigelis¹

2016

geol-geogr

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Section: Base Data On Globuligerina Oxfordiana (Grigelis)mentioning

confidence: 99%

Globuligerina oxfordiana (Grigelis, 1958) – revision of the first planktonic foraminifera discovered in the Upper Jurassic of Lithuania

Grigelis¹

2016

geol-geogr

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“…This macrotaxonomic classification was adopted by Arenillas (1996). However, Olsson et al (1999) concluded that Globanomalina was derived from the Late Maastrichtian hedbergellids, and consequently included it in the family Hedbergellidae Loeblich & Tappan, 1961. The wall of Hedbergella is similar to that of Globanomalina, namely pittedsmooth, but displays small scattered pustules, which are frequently very abundant over the first chambers of the test (Fig.…”

Section: Taxonomic and Phylogenetic Notesmentioning

confidence: 99%

“…Others authors (e.g. Arenillas 1996) included it in the family Truncorotaloididae Loeblich & Tappan, 1961. Olsson et al (1999 also suggested a hedbergellid origin for Praemurica, but independently of the Globanomalina origin, proposing H. monmouthensis as the ancestral species, and Pr.…”

Section: Taxonomic and Phylogenetic Notesmentioning

confidence: 99%

New evidence on the origin of non-spinose pitted–cancellate species of the early Danian planktonic foraminifera

Arenillas¹,

Arz²

2013

Geologica Carpathica

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Intermediate forms identified in some of the most continuous lower Danian sections allow a better understanding of the origin and evolution of pitted (Globanomalina) and cancellate (Praemurica) planktonic foraminifera. Both Globanomalina and Praemurica are part of a major Paleocene lineage, namely the "non-spinose lineage", which started to diverge in the early Danian. Transitional specimens strongly suggest the evolution from Parvularugoglobigerina to Globanomalina, and then to Praemurica. These evolutionary turnovers were quite rapid (probably lasting less than 10 kyr), and seem to have begun in the time equivalent of the lower part of the E. simplicissima Subzone, namely the middle part of the standard Zone Pa. The initial evolutionary trends within this non-spinose lineage were the increase of test size and lip thickness, and the evolution from tiny pore-murals to large pore-pits, and from smooth to pitted and finally cancellate walls. Biostratigraphic data suggest that evolution of the wall texture preceded the morphological evolution within each genus. The oldest species of both Globanomalina and Praemurica, namely G. archeocompressa and Pr. taurica, initially retained the external morphology of the ancestral Parvularugoglobigerina eugubina. Since their divergence, Globanomalina and Praemurica followed a separate evolutionary path, evolving into morphologically different species.

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“…Pawlowski et al, 2013), are mostly based on the test morphology (Loeblich andTappan, 1984, 1987), including the number and shape of the chambers, the chamber arrangement, the shape and position of the aperture, and also the type of ornamentation (Haynes, 1981), which sometimes make the species identification very difficult. The high variability of species may result from the alternation of generations, from the ontogenetic development, or from the variation in environmental conditions, including even seasonal morphological variations (Pawlowski et al, 1994).…”

Section: Introductionmentioning

confidence: 99%

The functional significance of the spinose keel structure of benthic foraminifera: inferences from <i>Miliolina cristata</i> Millett, 1898 (Miliolida) from northeast Romania

Dumitriu

Dubicka

Ionesi

2018

J. Micropalaeontol.

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Abstract. The paper presents Miocene (lower Sarmatian) benthic foraminifera from the FH 3 P 1 Rȃdȃuţi Core section from the northwestern part of the Moldavian Platform, Romania. Based on foraminiferal assemblages we infer sediments were deposited in shallow-water, including marine-marginal environments, of varying salinities from brackish to normal marine with some short and rather small sea-level changes. Moreover, we describe for the first time in the Moldavian Platform a very rare species, Miliolina cristata Millett, which presents a characteristic spinose keel. Based on a detailed study of the test morphology and its variability, observed in picked material as well as in thin sections, we discuss some palaeoecological aspects of these foraminifera. M. cristata probably does not constitute a distinctive species, but it is more probable that some miliolid taxa developed such an exoskeletal feature in response to new environmental conditions, such as more turbulent water. Accordingly, our study would support the thesis that one of the functions of the benthic foraminiferal spines is to stabilize foraminiferal tests found in sandy substrates from high-energy environments.

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Suprageneric Classification of the Foraminiferida (Protozoa)

Cited by 147 publications

References 0 publications

Globuligerina oxfordiana (Grigelis, 1958) – revision of the first planktonic foraminifera discovered in the Upper Jurassic of Lithuania

Globuligerina oxfordiana (Grigelis, 1958) – revision of the first planktonic foraminifera discovered in the Upper Jurassic of Lithuania

New evidence on the origin of non-spinose pitted–cancellate species of the early Danian planktonic foraminifera

The functional significance of the spinose keel structure of benthic foraminifera: inferences from <i>Miliolina cristata</i> Millett, 1898 (Miliolida) from northeast Romania

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Suprageneric Classification of the Foraminiferida (Protozoa)

Cited by 147 publications

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Globuligerina oxfordiana (Grigelis, 1958) – revision of the first planktonic foraminifera discovered in the Upper Jurassic of Lithuania

Globuligerina oxfordiana (Grigelis, 1958) – revision of the first planktonic foraminifera discovered in the Upper Jurassic of Lithuania

New evidence on the origin of non-spinose pitted–cancellate species of the early Danian planktonic foraminifera

The functional significance of the spinose keel structure of benthic foraminifera: inferences from &lt;i&gt;Miliolina cristata&lt;/i&gt; Millett, 1898 (Miliolida) from northeast Romania

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The functional significance of the spinose keel structure of benthic foraminifera: inferences from <i>Miliolina cristata</i> Millett, 1898 (Miliolida) from northeast Romania