First record of Calappoidea and Dromioidea from the Upper Cretaceous (Upper Maastrichtian) of NW Madagascar

The crustaceans from the marine Berivotra Formation, dated as late Cretaceous, from 50 km south of Mahajanga, Madagascar contains macrurans, brachyurans and thalassinideans. Two brachyuran families, Raninidae and Dynomenidae, were previously identified with the genera Notopocorystes, Caloxanthus, Titanocarcinus, Xanthosia, and Dromiopsis. Fragmentary material now also allows the recognition of Dromioidea, Calappoidea and Xanthoidea.

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BROECKINELLA HENSONI N. SP., A NEW LARGER BENTHIC FORAMINIFERA FROM THE UPPER MAASTRICHTIAN OF IRAN AND A REVISION OF THE GENUS BROECKINELLA HENSON, 1948

Acta Palaeontologica Romaniae ◽

10.35463/j.apr.2020.02.02 ◽

2020 ◽

pp. 57-67

Author(s):

Felix Schlagintweit ◽

Koorosh Rashidi

Keyword(s):

Benthic Foraminifera ◽

Upper Cretaceous ◽

Test Chamber ◽

First Record ◽

Generic Diagnosis ◽

Larger Benthic Foraminifera ◽

Zagros Zone ◽

Sw Iran ◽

Tarbur Formation ◽

Upper Maastrichtian

new larger benthic foraminifera is described as Broeckinella hensoni from the upper Maastrichtian Tar-bur Formation of SW Iran (Zagros Zone). In comparison to the type species of the genus, Broeckinella arabica Henson, which also occurs in the Tarbur Formation, the new species has distinctly larger dimensions (e.g., size and thickness of test, chamber height). The first record of a microspheric specimen of B. arabica shows previously unrecorded annular chambers in the final test stage. Therefore, the generic diagnosis is herein emended. In the Tarbur Formation, both B. hensoni n. sp. and B. arabica occur in foraminiferal-algal wackestones. However, B. arabica occurs in a wider range of microfacies, including packstones and grainstones. It is assumed that Broeckinella originated in the Upper Cretaceous with Broeckinella neumannae Gendrot. The upper Albian Broeckinella aragonensis Peybernès is herein transferred to the porcellaneous genus Peneroplis Montfort.

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Nannofossils, foraminifera and microforaminiferal linings in the Cenozoic diamictites of Cape Lamb, Vega Island, Antarctica

Polish Polar Research ◽

10.2478/popore-2014-0003 ◽

2014 ◽

Vol 35 (1) ◽

pp. 1-26 ◽

Cited By ~ 6

Author(s):

Andrea Concheyro ◽

Andrea Caramés ◽

Cecilia R. Amenábar ◽

Marina Lescano

Keyword(s):

Early Cretaceous ◽

Late Cretaceous ◽

First Record ◽

Organic Layer ◽

Sediment Sources ◽

Lower Maastrichtian ◽

James Ross Island ◽

The Antarctic ◽

Upper Maastrichtian ◽

Upper Campanian

AbstractMicropaleontological and palynological samples from three Cenozoic diamictites at Cape Lamb, Vega Island, James Ross Basin were analysed. Fossiliferous samples yielded reworked and autochthonous assemblages of Mesozoic calcareous nanno− fossils, impoverished Cretaceous foraminifera together with Neogene species, as well as Late Cretaceous dinoflagellate cysts, pollen, spores and abundant Cenozoic micro− foraminiferal linings. The recovered nannoflora indicates Early Cretaceous (Hauteri− vian-Albian) and Late Cretaceous (Santonian-Early Campanian) ages, suggesting an in− tensive reworking of marine sediments. The presence of the Early Cretaceous species Nannoconus circularis Deres et Acheriteguy in the diamictite represents its first record for the James Ross Basin. The scarce foraminiferal fauna includes Pullenia jarvisi Cushman, which indicates reworking from lower Maastrichtian-lower Paleocene sediments, and also the Neogene autochthonous Trochammina sp. aff. T. intermedia. The in− ner−organic layer observed inside this specimen appears to be identical to microfora− miniferal linings recovered from the same sample. Palynomorphs found in the studied samples suggest erosion from the underlying Snow Hill Island and the Lopez de Bertodano Formation beds (upper Campanian-upper Maastrichtian). These recovered assemblages indicate either different periods of deposition or reworking from diverse sources during Cenozoic glaciation, originating in James Ross Island and the Antarctic Peninsula with the influence of local sediment sources.

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An ankylosaurid dinosaur from the Upper Cretaceous of Shandong (China)

Geological Magazine ◽

10.1017/s0016756800018914 ◽

1995 ◽

Vol 132 (6) ◽

pp. 683-692 ◽

Cited By ~ 12

Author(s):

Eric Buffetaut

Keyword(s):

Late Cretaceous ◽

Upper Cretaceous ◽

First Record ◽

Northwestern China ◽

Left Femur ◽

Caudal Vertebrae ◽

The University

AbstractIn 1923, H. C. T’an and O. Zdansky collected remains of an ankylosaurid dinosaur in the Late Cretaceous Wangshi Group of the Laiyang region, in eastern Shandong (China). Apart from a few caudal vertebrae, this material, which is kept at the Palaeontological Institution of the University of Uppsala (Sweden), was never described or figured. It includes a well-preserved sacrum with the attached right ilium and part of the presacral rod, caudal vertebrae, a left femur and a dermal scute. This material is referred to an ankylosaurid of the genus Pinacosaurus Gilmore, 1933, on the basis of the widely divergent ilium bearing a strong ventral ridge and of the slenderness of the femur. In the absence of cranial material, a specific attribution is difficult and the Uppsala material is referred to as Pinacosaurus cf. grangeri (P. grangeri being the only generally accepted species of Pinacosaurus). This is the first record of Pinacosaurus outside the Gobi Basin of Mongolia and northwestern China. In the Gobi Basin, Pinacosaurus has been reported only from the Djadokhta Formation or its equivalents, of supposed Campanian age, and it is suggested that at least the part of the Wangshi Group which yielded the Shandong Pinacosaurus may be of roughly the same age as the Djadokhta Formation.

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Monimiaceae sensu lato, an element of Gondwanan polar forests: Evidence from the late Cretaceous-early tertiary wood flora of Antarctica

Australian Systematic Botany ◽

10.1071/sb00022 ◽

2001 ◽

Vol 14 (2) ◽

pp. 207 ◽

Cited By ~ 32

Author(s):

Imogen Poole ◽

Helmut Gottwald

Keyword(s):

Late Cretaceous ◽

Upper Cretaceous ◽

First Record ◽

Southern South America ◽

Anatomical Features ◽

Early Tertiary ◽

Breadth Ratio ◽

Ecological Dominance ◽

Perforation Plates ◽

The Antarctic

Palaeofloristic studies of the Antarctic Peninsula region are important in furthering our understanding of (i) the radiation and rise to ecological dominance of the angiosperms in the Southern Hemisphere during the Late Cretaceous and (ii) the present day disjunct austral vegetation. Investigations of Upper Cretaceous and Early Tertiary sediments of this region yield a rich assemblage of well-preserved fossil dicotyledonous angiosperm wood which provides evidence for the existence, since the Late Cretaceous, of temperate forests similar in composition to those found in present-day southern South America, New Zealand and Australia. This paper describes two previously unrecognised morphotypes, which can be assigned to the Monimiaceae sensu lato, and represents the first record of this family in the wood flora of Antarctica. Specimens belonging to the first fossil morphotype have been assigned to Hedycaryoxylon SÜss (subfamily Monimioideae) because they exhibit anatomical features characteristic of Hedycaryoxylon and extant Hedycarya J.R.Forst. & G.Forst. and Tambourissa Sonn. Characters include diffuse porosity, vessels which are mainly solitary with scalariform perforation plates, opposite to scalariform intervascular pitting, paratracheal parenchyma, septate fibres and tall (>3 mm), wide multiseriate rays with a length: breadth ratio of approximately 1: 4. Specimens belonging to the second morphotype have been assigned to Atherospermoxylon KrÄusel, erected for fossil woods of the Monimiaceae in the tribe Atherospermeae (now Atherospermataceae) in that they exhibit anatomical features similar to Atherospermoxylon and extant Daphnandra Benth., Doryphora Endl. and Laurelia novae-zelandiae A.Cunn. These characters include diffuse to semi-ring porosity, scalariform perforation plates with up to 25 bars, septate fibres, relatively short (<1 mm) rays with a length: breadth ratio of between 1: 4 and 1: 11.

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A new species of <i>Omphalocyclus</i> (Foraminiferida) from the Upper Cretaceous of Jamaica and its stratigraphical significance

Journal of Micropalaeontology ◽

10.1144/jm.21.2.149 ◽

2002 ◽

Vol 21 (2) ◽

pp. 149-153 ◽

Cited By ~ 9

Author(s):

Gavin C. Gunter ◽

Edward Robinson ◽

Simon F. Mitchell

Keyword(s):

New Species ◽

Upper Cretaceous ◽

First Record ◽

A New Species ◽

Upper Maastrichtian

Abstract. The orbitoidal larger foraminifer Omphalocyclus maldonensis n. sp. is described from the Maldon Inlier of northwestern Jamaica, being the first record of this genus from the island. The limestone in which it occurs contains the Upper Cretaceous (Upper Maastrichtian) Titanosarcolites rudist fauna, together with larger foraminiferal specimens identified as Orbitoides megaloformis Papp & Küpper. The new species differs from Omphalocyclus macroporus, the only other widely recognized species, in possessing a much smaller nucleus. At least some of the earlier records of Omphalocyclus from the Upper Cretaceous of Venezuela and Cuba should probably be referred to O. maldonensis.

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BROECKINELLA HENSONI N. SP., A NEW LARGER BENTHIC FORAMINIFERA FROM THE UPPER MAASTRICHTIAN OF IRAN AND A REVISION OF THE GENUS BROECKINELLA HENSON, 1948

Acta Palaeontologica Romaniae ◽

10.35463/j.apr.2020.01.06 ◽

2020 ◽

pp. 51-61 ◽

Cited By ~ 2

Author(s):

FELIX SCHLAGINTWEIT ◽

KOOROSH RASHIDI

Keyword(s):

Benthic Foraminifera ◽

Upper Cretaceous ◽

Test Chamber ◽

First Record ◽

Generic Diagnosis ◽

Larger Benthic Foraminifera ◽

Zagros Zone ◽

Sw Iran ◽

Tarbur Formation ◽

Upper Maastrichtian

A new larger benthic foraminifera is described as Broeckinella hensoni from the upper Maastrichtian Tarbur Formation of SW Iran (Zagros Zone). In comparison to the type species of the genus, Broeckinella arabica Henson, which also occurs in the Tarbur Formation, the new species has distinctly larger dimensions (e.g., size and thickness of test, chamber height). The first record of a microspheric specimen of B. arabica shows previously unrecorded annular chambers in the final test stage. Therefore, the generic diagnosis is herein emended. In the Tarbur Formation, both B. hensoni n. sp. and B. arabica occur in foraminiferal-algal wackestones. However, B. arabica occurs in a wider range of microfacies, including packstones and grainstones. It is assumed that Broeckinella originated in the Upper Cretaceous with Broeckinella neumannae Gendrot. The upper Albian Broeckinella aragonensis Peybernès is herein transferred to the porcellaneous genus Peneroplis Montfort.

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First record of Epicymatoceras vaelsense (Nautilida) from the Maastrichtian white chalk of northern Denmark

Bulletin of the Geological Society of Denmark ◽

10.37570/bgsd-2018-66-14 ◽

2018 ◽

Vol 66 ◽

pp. 229-235 ◽

Cited By ~ 1

Author(s):

Oksana Malchyk ◽

Marcin Machalski

Keyword(s):

The Netherlands ◽

Late Cretaceous ◽

First Record ◽

The Other ◽

Northern Germany ◽

Lower Upper ◽

Lower Maastrichtian ◽

C 30 ◽

Upper Maastrichtian

The atypical Late Cretaceous nautilid Epicymatoceras vaelsense (Binkhorst van den Binkhorst, 1862) is described and illustrated on the basis of three specimens from the Maastrichtian white chalk of Denmark. One of these is probably from the lower/upper Maastrichtian boundary interval at Frejlev, while the other two originate from the uppermost Maastrichtian chalk as exposed in the Dania quarry; both localities are in Jylland, northern Denmark. These are first reports of E. vaelsense from Denmark; the species has previously been recorded from the uppermost Campanian and lower Maastrichtian of the Netherlands, Belgium, northern Germany and Poland. The presence of E. vaelsense in the topmost Maastrichtian white chalk in the Dania quarry is considered the youngest record of Epicymatoceras known to date, suggesting the persistence of the genus until the end of the Cretaceous. The diameter of the embryonic conch of the Danish E. vaelsense may be estimated at c. 30 mm, based on an individual from the Dania quarry, confirming earlier observations that the species possessed one of the largest embryonic conchs amongst Late Cretaceous nautilids.

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The crucial boundaries in the development of the late cretaceous biota of plankton foraminifers in the southern part of the Indian ocean

Океанология ◽

10.31857/s0030-15745961074-1085 ◽

2019 ◽

Vol 59 (6) ◽

pp. 1074-1085

Author(s):

E. A. Sokolova

Keyword(s):

Indian Ocean ◽

Species Composition ◽

Late Cretaceous ◽

Upper Cretaceous ◽

Planktonic Foraminifera ◽

The Indian Ocean ◽

Systematic Composition ◽

Climatic Series

The article analyzes own data on the species composition of shells of planktonic foraminifera from the Upper Cretaceous sediments of the Indian Oceans, as well as from the sections of the offshore seas of Australia. The species of planktonic foraminifera are grouped and arranged in a climatic series. An analysis of the change in the systematic composition of foraminifers made it possible to distinguish periods of extreme and intermediate climatic states in the Late Cretaceous.

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