First record of the Late Cretaceous starfish Metopaster parkinsoni (Forbes, 1848) in Iran

Lebambromyia sacculifera sp. nov. is described from Late Cretaceous amber from Myanmar, integrating traditional observation techniques and X-ray phase contrast microtomography. Lebambromyia sacculifera is the second species of Lebambromyia after L. acrai Grimaldi and Cumming, described from Lebanese amber (Early Cretaceous), and the first record of this taxon from Myanmar amber, considerably extending the temporal and geographic range of this genus. The new specimen bears a previously undetected set of phylogenetically relevant characters such as a postpedicel sacculus and a prominent clypeus, which are shared with Ironomyiidae and Eumuscomorpha. Our cladistic analyses confirmed that Lebambromyia represented a distinct monophyletic lineage related to Platypezidae and Ironomyiidae, though its affinities are strongly influenced by the interpretation and coding of the enigmatic set of features characterizing these fossil flies.

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

Contributions to Zoology ◽

10.1163/18759866-0720203013 ◽

2003 ◽

Vol 72 (2-3) ◽

pp. 135-136

Author(s):

Alessandro Garassino ◽

Giovanni Pasini

Keyword(s):

Late Cretaceous ◽

Upper Cretaceous ◽

First Record ◽

Upper Maastrichtian

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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First record of Lancian (Late Cretaceous) mammals from the Hell Creek Formation of southwestern North Dakota, USA

Cretaceous Research ◽

10.1006/cres.1996.0034 ◽

1996 ◽

Vol 17 (5) ◽

pp. 633-643 ◽

Cited By ~ 8

Author(s):

John P. Hunter ◽

Dean A. Pearson

Keyword(s):

North Dakota ◽

Late Cretaceous ◽

First Record ◽

Hell Creek Formation

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First record of soft-shelled turtles (Cryptodira, Trionychidae) from the Late Cretaceous of Europe

Journal of Vertebrate Paleontology ◽

10.1080/02724634.2012.685036 ◽

2012 ◽

Vol 32 (5) ◽

pp. 1027-1032 ◽

Cited By ~ 16

Author(s):

Torsten M. Scheyer ◽

Thomas Mörs ◽

Elisabeth Einarsson

Keyword(s):

Late Cretaceous ◽

First Record

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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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The first record of Late Cretaceous blackflies (Diptera: Simuliidae) in Asia (Yantardakh, Taimyr)

Paleontological Journal ◽

10.1134/s0031030116090112 ◽

2016 ◽

Vol 50 (9) ◽

pp. 997-1000 ◽

Cited By ~ 6

Author(s):

E. E. Perkovsky ◽

E. B. Sukhomlin

Keyword(s):

Late Cretaceous ◽

First Record

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A new southern Laramidian ankylosaurid, Akainacephalus johnsoni gen. et sp. nov., from the upper Campanian Kaiparowits Formation of southern Utah, USA

PeerJ ◽

10.7717/peerj.5016 ◽

2018 ◽

Vol 6 ◽

pp. e5016 ◽

Cited By ~ 7

Author(s):

Jelle P. Wiersma ◽

Randall B. Irmis

Keyword(s):

Late Cretaceous ◽

First Record ◽

Multiple Time ◽

New Taxon ◽

Postcranial Skeleton ◽

Surface Textures ◽

Close Phylogenetic Relationship ◽

Biogeographic Provinces ◽

Dispersal Events ◽

Upper Campanian

A partial ankylosaurid skeleton from the upper Campanian Kaiparowits Formation of southern Utah is recognized as a new taxon, Akainacephalus johnsoni, gen. et sp. nov. The new taxon documents the first record of an associated ankylosaurid skull and postcranial skeleton from the Kaiparowits Formation. Preserved material includes a complete skull, much of the vertebral column, including a complete tail club, a nearly complete synsacrum, several fore- and hind limb elements, and a suite of postcranial osteoderms, making Akainacephalus johnsoni the most complete ankylosaurid from the Late Cretaceous of southern Laramidia. Arrangement and morphology of cranial ornamentation in Akainacephalus johnsoni is strikingly similar to Nodocephalosaurus kirtlandensis and some Asian ankylosaurids (e.g., Saichania chulsanensis, Pinacosaurus grangeri, and Minotaurasaurus ramachandrani); the cranium is densely ornamented with symmetrically arranged and distinctly raised ossified caputegulae which are predominantly distributed across the dorsal and dorsolateral regions of the nasals, frontals, and orbitals. Cranial caputegulae display smooth surface textures with minor pitting and possess a distinct conical to pyramidal morphology which terminates in a sharp apex. Character analysis suggests a close phylogenetic relationship with N. kirtlandensis, M. ramachandrani, Tarchia teresae, and S. chulsanensis, rather than with Late Cretaceous northern Laramidian ankylosaurids (e.g., Euoplocephalus tutus, Anodontosaurus lambei, and Ankylosaurus magniventris). These new data are consistent with evidence for distinct northern and southern biogeographic provinces in Laramidia during the late Campanian. The addition of this new ankylosaurid taxon from southern Utah enhances our understanding of ankylosaurid diversity and evolutionary relationships. Potential implications for the geographical distribution of Late Cretaceous ankylosaurid dinosaurs throughout the Western Interior suggest multiple time-transgressive biogeographic dispersal events from Asia into Laramidia.

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