Emended Diagnosis and Phylogenetic Relationships of the Upper Cretaceous Fossil Snake Najash rionegrina Apesteguía and Zaher, 2006 (project)

10.7934/p956 ◽  
2014 ◽  
Author(s):  
P Palci ◽  
W Caldwell ◽  
M Albino
Keyword(s):  
Phylogenetic Relationships ◽  
Upper Cretaceous ◽  
Emended Diagnosis

Aldebarania arenitea, a new genus and species of Astropectinidae (Asteroidea; Echinodermata) from the Maastrichtian (Upper Cretaceous) Peedee Formation of North Carolina

1995 ◽  
Vol 69 (2) ◽  
pp. 376-380 ◽  
Author(s):  
Daniel B. Blake ◽  
Keith Sturgeon
Keyword(s):  
North Carolina ◽  
Shallow Water ◽  
Phylogenetic Relationships ◽  
Upper Cretaceous ◽  
New Genus ◽  
Water Environment ◽  
New Genus And Species ◽  
Marine Fauna ◽  
Shallow Water Environment

Aldebarania arenitea (Astropectinidae; Asteroidea; Echinodermata) is described from the Rocky Point Member of the Maastrichtian (Upper Cretaceous) Peedee Formation of North Carolina. A turbulent, shallow-water environment is suggested by sedimentary features, a diverse marine fauna, and the morphology of Aldebarania. Aldebarania appears to be a partial ecological equivalent of living Astropecten and Luidia; however, phylogenetic relationships within the Astropectinidae are unstudied and the origin of similarities is unknown.

Description and phylogenetic relationships of a large-bodied sphagesaurid notosuchian from the Upper Cretaceous Adamantina Formation, Bauru Group, São Paulo, southeastern Brazil

2020 ◽  
Vol 106 ◽  
pp. 104259
Author(s):  
Galuber Oliveira Cunha ◽  
Rodrigo Miloni Santucci ◽  
Marco Brandalise de Andrade ◽  
Carlos Eduardo Maia de Oliveira
Keyword(s):  
Phylogenetic Relationships ◽  
Upper Cretaceous ◽  
Sao Paulo ◽  
Southeastern Brazil ◽  
São Paulo ◽  
Bauru Group

Santonian cockroaches from Yantardakh amber (Russia: Taimyr) differ in dominance

2019 ◽  
Vol 2 (3) ◽  
pp. 297-307 ◽  
Author(s):  
PETER VRŠANSKÝ
Keyword(s):  
Upper Cretaceous ◽  
Sedimentary Rocks ◽  
Close Relative ◽  
Evolutionary Potential ◽  
Source Tree ◽  
Emended Diagnosis

Cretaceous amber cockroaches are known only from Lebanon, Myanmar and France. An assemblage of 14 dictyopterans (2 unidentified) from Santonian amber of Yantardakh, Taimyr, Russia is reported here, comprising only 0.3 % of ˃5,000 collected insects. Small pieces (0.03–0.30 g) contain six immature individuals of Liberiblattinidae, one predatory Ocelloblattula or its close relative, one Perlucipecta immature (Mesoblattinidae), one represents typical Blattulidae and Chaeteessites minutissimus along with two primitive true mantodeans. The assemblage lacks any modern taxon, common in other Upper Cretaceous sedimentary rocks and ambers, while diverse parasitic Evaniidae indirectly confirms the presence of them. A biome with a diversity of otherwise rare Liberiblattinidae (emended diagnosis revealed herein) with high evolutionary potential expressed in giving rise to numerous other families was thus present. Differences observed were probably caused by another source tree as evidenced by the different chemistry of Taimyr amber compared to other ambers.

Jagtia kunradensis, a new genus and species of clawed lobster (Decapoda: Nephropidae) from the Upper Cretaceous (Upper Maastrichtian) Maastricht Formation, The Netherlands

2000 ◽  
Vol 74 (2) ◽  
pp. 224-229 ◽  
Author(s):  
Dale Tshudy ◽  
Ulf Sorhannus
Keyword(s):  
The Netherlands ◽  
Deep Water ◽  
Phylogenetic Relationships ◽  
Upper Cretaceous ◽  
New Genus ◽  
New Genus And Species ◽  
Type Area ◽  
Fossil Form ◽  
Upper Maastrichtian

A new genus and species of clawed lobster, Jagtia kunradensis, is described from the Upper Cretaceous (Upper Maastrichtian) Kunrade Limestone facies of the Maastricht Formation, The Netherlands. Three nephropid lobster genera and at least three species (Oncopareia bredai Bosquet, 1854, sensu Tshudy, 1993, Oncopareia sp. Tshudy, 1993, Hoploparia beyrichi Schlüter, 1862, and Jagtia kunradensis) have now been collected from limestones of the Maastrichtian type area (southeastern Netherlands and northeastern Belgium). Cladistic methods were employed in re-evaluating the phylogenetic relationships of the nephropid lobsters, including Jagtia. These analyses indicate that Jagtia is part of a clade that includes the recent Thymops and Thymopsis. The new genus is the first fossil form to be closely allied with these deep-water genera.

Sineoamphisbaena hexatabularis, an amphisbaenian (Diapsida: Squamata) from the Upper Cretaceous redbeds at Bayan Mandahu (Inner Mongolia, People's Republic of China), and comments on the phylogenetic relationships of the Amphisbaenia

1996 ◽  
Vol 33 (4) ◽  
pp. 541-577 ◽  
Author(s):  
Xiao-Chun Wu ◽  
Donald B. Brinkman ◽  
Anthony P. Russell
Keyword(s):  
Central Asia ◽  
Phylogenetic Relationships ◽  
Inner Mongolia ◽  
Upper Cretaceous ◽  
Phylogenetic Analyses ◽  
Temporal Region ◽  
People's Republic Of China ◽  
Way Of Life ◽  
Lacustrine Environment ◽  
Republic Of China

Sineoamphisbaena hexatabularis Wu et al., 1993 is the earliest known amphisbaenian represented by well-preserved cranial and postcranial material. It reveals a mosaic of generalized lizard-like features and amphisbaenian characters. Most distinctive of the latter are features of cranial consolidation adaptive for a fossorial way of life. Phylogenetic analyses strongly confirm the monophyly of the Amphisbaenia inclusive of S. hexatabularis. The Amphisbaenia is diagnosed by a suite of apomorphic characters. The available evidence suggests a probable Amphisbaenia–Macrocephalosauridae relationship within the Scincomorpha. This is supported primarily by the unique modifications of the palate and temporal region of the skull. It is argued here that the Amphisbaenia evolved in Central Asia during the Cretaceous, in response to the transition from a perennial lacustrine environment to a dry, semiarid eolian environment. The relatively primitive morphology indicates that S. hexatabularis was not permanently subterranean. The further derived modifications of later forms are associated with tunneling in an environment of more compact soils.

scholarly journals Additional new organic-walled dinoflagellate cysts from two onshore UK Chalk boreholes

2018 ◽  
Vol 37 (1) ◽  
pp. 73-86 ◽  
Author(s):  
Martin A. Pearce
Keyword(s):  
New Species ◽  
Upper Cretaceous ◽  
Morphological Variability ◽  
Geological Survey ◽  
Type Material ◽  
Dinoflagellate Cysts ◽  
British Geological Survey ◽  
New Subspecies ◽  
Emended Diagnosis

Abstract. Beautifully preserved dinoflagellate cysts continue to be discovered in UK Cretaceous chalks and provide important new biostratigraphic information. Five new species – Conosphaeridium norfolkense sp. nov., Glaphyrocysta coniacia sp. nov., Impletosphaeridium banterwickense sp. nov., Sentusidinium devonense sp. nov., Sentusidinium spinosum sp. nov. and the new subspecies Spiniferites ramosus subsp. ginakrogiae subsp. nov. – are described from Upper Cretaceous strata of the British Geological Survey (BGS) Banterwick Barn and Trunch boreholes (onshore UK). An emended diagnosis for Odontochitina diducta Pearce is also provided to broaden the morphological variability in the type material.

Ophiomorpha irregulaire(Trace Fossil): Redescription from the Cretaceous of the Book Cliffs and Wasatch Plateau, Utah

1998 ◽  
Vol 72 (4) ◽  
pp. 773-778 ◽  
Author(s):  
Richard G. Bromley ◽  
A. A. Ekdale
Keyword(s):  
Upper Cretaceous ◽  
Trace Fossil ◽  
Deposit Feeder ◽  
Type Locality ◽  
Type Specimens ◽  
Delta Front ◽  
Book Cliffs ◽  
Fine Grained ◽  
Wasatch Plateau ◽  
Emended Diagnosis

The trace fossilOphiomorpha irregulaireFrey, Howard and Pryor, 1978, has been described chiefly from the Campanian (Upper Cretaceous) of the Book Cliffs of Carbon County, central Utah, U.S.A. Owing to the lack of type specimens and a well-defined type locality, a neotype and new paratypes are designated. Abundant material in the Spring Canyon Member of the Blackhawk Formation at Coal Creek Canyon, Book Cliffs, serves to supply a type locality and allows a more detailed description of the trace fossil than has been available hitherto, leading to an emended diagnosis. At the type locality,O. irregulaireis a shallow-tier trace fossil occurring in marine, delta-front or back-barrier, muddy, fine-grained sandstone. It probably represents the work of a crustacean deposit feeder.

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