scholarly journals The oldest species of the genusLaeviprosopon (Decapoda: Brachyura: Prosopidae) from the Oxfordian of Poland

2020 ◽  
Vol 63 (1) ◽  
pp. 9-13
Author(s):  
Natalia Starzyk
Keyword(s):  
New Species ◽  
Early Cretaceous ◽  
Late Jurassic ◽  
Southern Poland ◽  
A New Species

Till now the genus Laeviprosopon has comprised 12 species aged from the Late Jurassic to the end of the Early Cretaceous. Recently a new species was found in the Oxfordian locality of Polish Jura Chain, Laeviprosopon musialiki n. sp., described herein. Representatives of the genus Laeviprosopon are very rare in the Oxfordian localities of southern Poland. Laeviprosopon musialiki n. sp. is the oldest member of the genus.

scholarly journals A new species of baenid turtle from the Early Cretaceous Lakota Formation of South Dakota

Fossil Record ◽  
2020 ◽  
Vol 23 (1) ◽  
pp. 1-13
Author(s):  
Walter G. Joyce ◽  
Yann Rollot ◽  
Richard L. Cifelli
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
South Dakota ◽  
Early Cretaceous ◽  
Fossil Record ◽  
Late Jurassic ◽  
Sister Group ◽  
Sister Group Relationship ◽  
Relationship Of ◽  
A New Species

Abstract. Baenidae is a clade of paracryptodiran turtles known from the late Early Cretaceous to Eocene of North America. The proposed sister-group relationship of Baenidae to Pleurosternidae, a group of turtles known from sediments dated as early as the Late Jurassic, suggests a ghost lineage that crosses the early Early Cretaceous. We here document a new species of paracryptodiran turtle, Lakotemys australodakotensis gen. and sp. nov., from the Early Cretaceous (Berriasian to Valanginian) Lakota Formation of South Dakota based on a poorly preserved skull and two partial shells. Lakotemys australodakotensis is most readily distinguished from all other named Late Jurassic to Early Cretaceous paracryptodires by having a broad, baenid-like skull with expanded triturating surfaces and a finely textured shell with a large suprapygal I that laterally contacts peripheral X and XI and an irregularly shaped vertebral V that does not lap onto neural VIII and that forms two anterolateral processes that partially separate the vertebral IV from contacting pleural IV. A phylogenetic analysis suggests that Lakotemys australodakotensis is a baenid, thereby partially closing the previously noted gap in the fossil record.

A new species of Trachygamasus from Poland, a new definition of the genus, and a key to the world species (Parasitiformes: Parasitidae)

Zootaxa ◽  
2017 ◽  
Vol 4303 (3) ◽  
pp. 407
Author(s):  
WOJCIECH WITALIŃSKI
Keyword(s):  
New Species ◽  
Mite Species ◽  
World Species ◽  
Southern Poland ◽  
The World ◽  
Definition Of ◽  
A New Species

A new mite species, Trachygamasus gerdi sp. nov. from the environs of Kraków (southern Poland) is described. A modified diagnosis of Trachygamasus, as well as a key to adults of 10 world species—of 11 known species of the genus—are presented. 

A new species ofSinamia(Amiiformes, Sinamiidae) from the Early Cretaceous of Lanzhou Basin, Gansu, China

2015 ◽  
Vol 35 (2) ◽  
pp. e902847 ◽  
Author(s):  
Cuo Peng ◽  
Alison M. Murray ◽  
Donald B. Brinkman ◽  
Jiang-Yong Zhang ◽  
Hai-Lu You
Keyword(s):  
New Species ◽  
Early Cretaceous ◽  
A New Species ◽  
Lanzhou Basin

scholarly journals A new ornithurine from the Early Cretaceous of China sheds light on the evolution of early ecological and cranial diversity in birds

PeerJ ◽  
2016 ◽  
Vol 4 ◽  
pp. e1765 ◽  
Author(s):  
Jiandong Huang ◽  
Xia Wang ◽  
Yuanchao Hu ◽  
Jia Liu ◽  
Jennifer A. Peteya ◽  
...  
Keyword(s):  
New Species ◽  
Early Cretaceous ◽  
Late Cretaceous ◽  
Late Jurassic ◽  
Northeastern China ◽  
Avian Ecology ◽  
Developmental Shift ◽  
Cranial Ontogeny ◽  
Close Relatives

Despite the increasing number of exceptional feathered fossils discovered in the Late Jurassic and Cretaceous of northeastern China, representatives of Ornithurae, a clade that includes comparatively-close relatives of crown clade Aves (extant birds) and that clade, are still comparatively rare. Here, we report a new ornithurine speciesChangzuiornis ahgmifrom the Early Cretaceous Jiufotang Formation. The new species shows an extremely elongate rostrum so far unknown in basal ornithurines and changes our understanding of the evolution of aspects of extant avian ecology and cranial evolution. Most of this elongate rostrum inChangzuiornis ahgmiis made up of maxilla, a characteristic not present in the avian crown clade in which most of the rostrum and nearly the entire facial margin is made up by premaxilla. The only other avialans known to exhibit an elongate rostrum with the facial margin comprised primarily of maxilla are derived ornithurines previously placed phylogenetically as among the closest outgroups to the avian crown clade as well as one derived enantiornithine clade. We find that, consistent with a proposed developmental shift in cranial ontogeny late in avialan evolution, that this elongate rostrum is achieved through elongation of the maxilla while the premaxilla remains only a small part of rostral length. Thus, only in Late Cretaceous ornithurine taxa does the premaxilla begin to play a larger role. The rostral and postcranial proportions ofChangzuiornissuggest an ecology not previously reported in Ornithurae; the only other species with an elongate rostrum are two marine Late Cretacous taxa interpreted as showing a derived picivorous diet.

First teleost otoliths from the Late Jurassic of Russia

2020 ◽  
Vol 295 (1) ◽  
pp. 1-8
Author(s):  
Werner W. Schwarzhans ◽  
Aleksandr A. Mironenko
Keyword(s):  
New Species ◽  
Early Cretaceous ◽  
Late Jurassic ◽  
First Record ◽  
Related Genus ◽  
New Findings ◽  
Two New Species ◽  
Evolutionary Phase ◽  
Faunal Element

This is the first record of Late Jurassic (Volgian) otoliths from the boreal province of Russia. Two new species– Palealbula korchinskyi n. sp. and Palealbula moscoviensis n. sp. – are described representing otoliths of putative stem- albuliform affinities of unresolved familiar position. The phylogeny of Palealbula and the supposedly related genus Protalbula is discussed in the light of the new findings presented in this article. Both genera are shown to represent a common faunal element in the early evolutionary phase of teleosts during the Late Jurassic and Early Cretaceous.

scholarly journals Short note on a Pteranodontoid pterosaur (Pterodactyloidea) from western Queensland, Australia

2011 ◽  
Vol 83 (1) ◽  
pp. 301-308 ◽  
Author(s):  
Alexander W.A. Kellner ◽  
Taissa Rodrigues ◽  
Fabiana R. Costa
Keyword(s):  
New Species ◽  
Early Cretaceous ◽  
Short Note ◽  
Mandibular Symphysis ◽  
A New Species

Flying reptiles from Australia are very rare, represented mostly by isolated bones coming from the Early Cretaceous (Albian) Toolebuc Formation, which crops out in western Queensland. Among the first pterosaur specimens discovered from this deposit is a mandibular symphysis that some authors thought to have a particular affinity to species found in the Cambridge Greensand (Cenomanian) of England. It was further referred as a member of or closely related to one of the genera Ornithocheirus, Lonchodectes or Anhanguera. Here we redescribe this specimen, showing that it cannot be referred to the aforementioned genera, but represents a new species of Pteranodontoid (sensu Kellner 2003), here named Aussiedraco molnari gen. et sp. nov. It is the second named pterosaur from Australia and confirms that the Toolebuc deposits are so far the most important for our understanding of the flying reptile fauna of this country.

scholarly journals Reinterpretation of a previously described Jehol bird clarifies early trophic evolution in the Ornithuromorpha

2018 ◽  
Vol 285 (1871) ◽  
pp. 20172494 ◽  
Author(s):  
Xiaoting Zheng ◽  
Jingmai K. O'Connor ◽  
Xiaoli Wang ◽  
Yan Wang ◽  
Zhonghe Zhou
Keyword(s):  
New Species ◽  
Early Cretaceous ◽  
Tooth Loss ◽  
Direct Evidence ◽  
New Taxon ◽  
Gastric Mill ◽  
Ecological Inference ◽  
Close Inspection ◽  
Apparent Loss ◽  
A New Species

STM35-3 from the Yixian Formation is the only Early Cretaceous ornithuromorph preserving direct evidence of granivory. The crop contains numerous seeds and the preservation of gastroliths presumably within the ventriculus indicates this diet was paired with the presence of a gastric mill as in living granivorous birds. STM35-3 was originally referred to Hongshanornis longicresta , member of a diverse clade of small, basal ornithuromorphs with elongate hindlimbs known as the Hongshanornithidae. Hindlimb proportions suggest that hongshanornithids were wading birds, an ecological inference somewhat in conflict with direct evidence suggesting Hongshanornis fed on seeds. However, close inspection of STM35-3 reveals that the specimen represents a new species not closely related to hongshanornithids, distinguished by large forelimbs that exceed the length of the hindlimbs, robust and narrow coracoids, and a delicate edentulous rostrum. By contrast, all hongshanornithids have hindlimbs that far exceed the length of the forelimbs, coracoids with wide sternal margins, and small teeth throughout the upper and lower jaws. Reinterpretation of this new taxon, Eogranivora edentulata gen. et sp. nov, helps to clarify trophic driven patterns of tooth loss within the Ornithuromorpha. Apparent loss of the hallux may represent the first such occurrence in a Mesozoic bird and suggests a highly terrestrial lifestyle.

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