Dipsidripella danvillensis


Classification: pf_cenozoic -> Globigerinitidae -> Dipsidripella -> Dipsidripella danvillensis
Sister taxa: D. liqianyui, D. danvillensis, D. sp.,

Taxonomy

Citation: Dipsidripella danvillensis (Howe and Wallace 1932)
Rank: Species
Basionym: Globigerina danvillensis
Synonyms:
Taxonomic discussion:

See the Atlas of Eocene Planktonic Foraminifera (Huber and others, 2006) for previous discussion. Here we add Globigerinella evoluta Subbotina in synonymy following new observations of the type material (see Chapter 20, this volume). We include within our concept forms with four to six chambers in the final whorl, forms with or without supplementary apertures, and forms with globular or radially extended chambers. Clearly there is much scope for taxonomic subdivision should detailed morphometric, stratigraphic, and biogeographic studies be undertaken. [Pearson et al. 2018]

Globorotalia inconspicua aculeata Jenkins is considered a junior synonym of Dipsidripella danvillensis based on morphologic similarity of the two holotypes (Pl.16.8, Figs. 1-5) and because of nomenclatural priority. Dipsidripella hodisensis Brotea, the type species of Dipsidripella, also falls within the range of morphologic variability of D. danvillensis and is therefore considered a junior synonym (see holotype on Pl. 16.8, Fig. 6). Liu and others (1998) transferred Jenkins’s aculeata ( =danvillensis) to their new genus Praepararotalia based on the more areal, extraumbilical position of the aperture and similarity in shallow water biofacies distribution. This taxonomic reassignment is no longer considered appropriate because the other species that Liu and others (1998) assigned to Praepararotalia show significant asymmetry in the distribution of surface pustules, with greatest pustule concentrations near the umbilicus, and, in the case of P. inconspicua, coalescence of pustules to form costae on the chamber surface or a peripheral carina. [Huber et al. 2006]

Kucera (1994) compared ontogenetic patterns morphology and microstructure for modern microperforate species and lower Oligocene specimens of D. danvillensis (designated as Turborotalia? aculeata) collected from the Pouzdrany Marl in the Polish Carpathians. Results from his measurements of adult specimens demonstrate an overlapping but larger range of pore size in danvillensis (0.5-2.0 ½m) relative to modern microperforates (0.5-0.8 ½m) and a much lower concentration of pores (11-17 pores/½m2 in danvillensis vs. 160-180 pores/½m2 in microperforates). In his species abundance counts he found a strongly inverse relationship between the abundance of danvillensis and the abundance of large globigerinids. As an example, samples with 24-42% larger globigerinids contained less than 2% danvillensis, whereas samples with >85% danvillensis contained 0% larger globigerinids. In the shallowest, lowest salinity samples, Kucera found that D. danvillensis is the only foraminifer species present with a planktonic test morphology. [Huber et al. 2006]

Catalog entries: Globigerina danvillensis, Globorotalia inconspicua aculeata, Dipsidripella hodisensis, Globigerinella evoluta

Type images:

Distinguishing features: Test low trochospire, small, moderately lobate, increasing moderately in size, 4-6 in final whorl; sutures radial and depressed; umbilicus narrow to broad and moderately deep; aperture high arch; a semicircular accessory aperture may occur on the spiral side.

NB These concise distinguishing features statements are used in the tables of daughter-taxa to act as quick summaries of the differences between e.g. species of one genus.
They are being edited as the site is developed and comments on them are especially welcome.

Description


Diagnostic characters:

This species differs from Dipsidripella liqianyui by its more lobate and broadly rounded equatorial periphery, less flattened spiral side, and absence of pustules in the umbilicus; differs from Acarinina medizzai by its distinctive glutinata-type, danvillenis-subtype wall texture, hispid, rather than muricate wall, and distinctive, often highly arched aperture. [Pearson et al. 2018]


Wall type: Wall micro- to medioperforate, surface smooth to moderately pustulose, hispid to bluntly pustulose, pustules randomly scattered on umbilical and spiral sides of test, radially crystalline in section (glutinata-type, danvillensis-subtype; see Chapter 15, this volume). [Pearson et al. 2018]

Test morphology: Test small, moderately lobate, subquadrate to circular or elliptical in equatorial outline, axial periphery rounded; chambers globular or radially extended, coiled in a low trochospire, increasing moderately in size, 4-6 in the final whorl; sutures radial and depressed on umbilical and spiral sides; umbilicus narrow to broad and moderately deep; aperture an interiomarginal, umbilical-extraumbilical arch that is narrow and high or broad and low, may or may not be bordered by a narrow, equidimensional lip; a semicircular accessory aperture may occur on the spiral side at the intersection of the spiral and and/or penultimate chamber sutures (modified from Huber and others, 2006). [Pearson et al. 2018]

Size: Holotype maximum diameter 110 µm, breadth 70 µm; hypotypes maximum diameter 110-150 µm, maximum breadth 50-60 µm. [Pearson et al. 2018]

Character matrix

test outline:Lobatechamber arrangement:Trochospiraledge view:Equally biconvexaperture:Umbilical-extraumbilical
sp chamber shape:Globularcoiling axis:Lowperiphery:N/Aaperture border:Thin lip
umb chbr shape:Globularumbilicus:Wideperiph margin shape:Broadly roundedaccessory apertures:Sutural
spiral sutures:Weakly depressedumb depth:Deepwall texture:Moderately pustuloseshell porosity:Microperforate: <1µm
umbilical or test sutures:Moderately depressedfinal-whorl chambers:4.5-5.5 N.B. These characters are used for advanced search. N/A - not applicable

Biogeography and Palaeobiology


Geographic distribution: Generally reported from to mid- to outer neritic sediments. Also occurs in continental slope environments (e.g. ODP Site 647). [Pearson et al. 2018]

Isotope paleobiology: Dipsidripella danvillensis either lived in a benthic habitat for part of its life cycle or it occupied a much deeper level of the water column than co-occurring planktonic foraminifera (Huber and others, 2006). [Pearson et al. 2018] Oxygen and carbon isotope values for well preserved D. danvillensis from upper Eocene core samples drilled on the New Jersey coastal margin are plotted in Figure 16.4 relative to co-occurring benthic and planktonic species. The ∂18O values of D. danvillensis are from 0.5 to 1.0‰ more negative than co-occurring benthic species and from 0.3 to 0.7‰ more positive than co-occurring subbotinid or turborotaliid planktonic species. The ∂13C values of D. danvillensis are consistently more negative by 0.5 to 1.4‰ than co-occurring benthic values, and up to 2‰ more negative than co-occurring planktonic species. In one sample the carbon and oxygen isotope values of D. danvillensis plot very close to those of Tenuitella insolita. These data, and the biofacies distribution observations discussed above, indicate that D. danvillensis either lived in a benthic habitat for all or most of its life cycle or it occupied a much deeper level of the water column than co-occurring planktonic foraminifera. [Huber et al. 2006]

Phylogenetic relations: The origin of the form is uncertain; it is probably derived from a benthic species, possibly of Praepararotalia (Liu and others, 1998; but see also comments in Huber and others, 2006). It probably gave rise to Dipsidripella liqianyui (Huber and others, 2006) and Tenuitella praegemma (Chapter 15, this volume). [Pearson et al. 2018]

Uncertain. Although Lui and others (1998) suggest that Praepararotalia aculeata ( =D. danvillensis in the present study) evolved from Praepararotalia perclara (Loeblich and Tappan) during the early Eocene, based on morphologic similarity and overlapping stratigraphic ranges, they are separated by a stratigraphic gap spanning the lower Eocene and P. perclara is considered a benthic taxon. Restriction of D. danvillensis to shallow shelf depositional environments (e.g., Liu and others, 1998) and similarity of its stable isotopic composition with co-occurring benthic species (see below) suggests that this taxon may have been derived from a benthic ancestor. [Huber et al. 2006]

Biostratigraphic distribution

Geological Range:
Notes: Middle Eocene (Liu and others, 1998) to lower Oligocene, probably lowermost part of Zone O2. At the time of publication of the Atlas of Eocene Planktonic Foraminifera, the confirmed stratigraphic range was restricted to the middle and upper Eocene although a single specimen from the lower Oligocene was illustrated (Huber and others, 2006, plate 16.8, fig. 15). Here we confirm its range into the Oligocene and illustrate Oligocene specimens from various localities. At ODP Site 647, with moderate sampling intensity, its disappearance is at the same level as that of Pseudohastigerina naguewichiensis (H.K. Coxall, unpublished data). The latter is absent from the Ottenthal Fm., which is probably lowermost Zone O2. Its absence from younger clays and marls in the Paratethys region suggest extinction somewhere in Zone O2, although this has not so far been observed in any continuous section. [Pearson et al. 2018]
Last occurrence (top): within O2 zone (30.28-32.10Ma, top in Rupelian stage). Data source: Pearson et al. 2018
First occurrence (base): within E9 zone (43.23-43.85Ma, base in Lutetian stage). Data source: Eocene Atlas

Plot of occurrence data:

Primary source for this page: Pearson et al. 2018 - Olig Atlas chap.16 p.433; Huber et al. 2006 - Eocene Atlas, chap. 16, p. 496

References:

Brotea, D. (1995). A new planktonic foraminifer in upper Eocene deposits from north Transylvania. Romanian Journal of Paleontology. 76: 31-33. gs

Howe, H. V. & Wallace, W. E. (1932). Foraminifera of the Jackson Eocene at Danville Landing on the Ouachita, Catahoula Parish, Louisiana. Bulletin of the Geological Survey of Louisiana. 2: 1-118. gs

Huber, B. T., Olsson, R. K. & Pearson, P. N. (2006). Taxonomy, biostratigraphy, and phylogeny of Eocene microperforate planktonic foraminifera (Jenkinsina, Cassigerinelloita, Chiloguembelina, Streptochilus, Zeauvigerina, Tenuitella, and Cassigerinella) and Problematica (Dipsidripella). In, Pearson, P. N. , Olsson, R. K. , Hemleben, C. , Huber, B. T. & Berggren, W. A. (eds) Atlas of Eocene Planktonic Foraminifera. Cushman Foundation for Foraminiferal Research, Special Publication. 41(Chap 16): 461-508. gs

Jenkins, D. G. & Srinivasan, M. S. (1985). Cenozoic planktonic foraminifera from the Equator to the Sub-Antarctic of the Southwest Pacific. Initial Reports of the Deep Sea Drilling Project. 90: 795-834. gs

Jenkins, D. G. & Srinivasan, M. S. (1986). Cenozoic planktonic foraminifera from the equator to the sub-antarctic of the Southwest Pacific. Initial Reports of the Deep Sea Drilling Project. 90: 795-834. gs

Jenkins, D. G. (1965b). Planktonic Foraminiferal zones and new taxa from the Danian to lower Miocene of New Zealand. New Zealand Journal of Geology and Geophysics. 8(6): 1088-1126. gs

Jenkins, D. G. (1966b). Planktonic foraminiferal zones and new taxa from the Danian to lower Miocene of New Zealand. New Zealand Journal of Geology and Geophysics. 8: 1088-1126. gs

Jenkins, D. G. (1971). New Zealand Cenozoic Planktonic Foraminifera. New Zealand Geological Survey, Paleontological Bulletin. 42: 1-278. gs

Liu, C., Olsson, R. K. & Huber, B. T. (1998). A benthic paleohabitat for Praepararotalia gen. nov. and Antarcticella Loeblich and Tappan. Journal of Foraminiferal Research. 28: 75-90. gs

Malumian, N. (1990). Foraminíferos de la Formación Man Aike (Eoceno, sureste lago Cardiel) Provincia de Santa Cruz. Asociación Geológica Argentina, Revista. 45: 365-385. gs

Miller, K. G. et al. (2008). Eocene-Oligocene global climate and sea-level changes: St. Stephens Quarry, Alabama. Geological Society of America, Bulletin. 120: 34-53. gs

Murray, J. W. & Wright, C. A. (1974). Palaeogene Foraminiferida and Palaeoecology, Hampshire and Paris Basins and the English Channel. The Palaeontological Association, London. -. gs

Nocchi, M., Amici, E. & Premoli Silva, I. (1991). Planktonic foraminiferal biostratigraphy and paleoenvironmental interpretation of Paleogene faunas from the subantarctic transect, Leg 114. Proceedings of the Ocean Drilling Program, Scientific Results. 114: 233-273. gs

Pearson, P. N., Wade, B. S. & Huber, B. T. (2018c). Taxonomy, biostratigraphy, and phylogeny of Oligocene Globigerinitidae (Dipsidripella, Globigerinita, and Tenuitella). In, Wade, B. S. , Olsson, R. K. , Pearson, P. N. , Huber, B. T. & Berggren, W. A. (eds) Atlas of Oligocene Planktonic Foraminifera. Cushman Foundation for Foraminiferal Research, Special Publication. 46(Chap 16): 429-458. gs

Poore, R. Z. & Bybell, L. M. (1988). Eocene to Miocene biostratigraphy of New Jersey Core ACGS #4: Implications for regional stratigraphy. U.S. Geological Survey Bulletin. 1829: 1-41. gs


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Dipsidripella danvillensis compiled by the pforams@mikrotax project team viewed: 17-11-2019

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