A new lizard skull from the Purbeck Limestone Group (Lower Cretaceous) of England

2012 ◽  
Vol 183 (6) ◽  
pp. 517-524 ◽  
Author(s):  
Susan E. Evans ◽  
Marc E. H. Jones ◽  
Ryoko Matsumoto
Keyword(s):  
Early Cretaceous ◽  
Lower Cretaceous ◽  
Late Jurassic ◽  
New Genus ◽  
Cladistic Analysis ◽  
Geological Survey ◽  
New Genus And Species ◽  
British Geological Survey ◽  
Maxillary Morphology

Abstract The Purbeck Limestone Group of England has yielded a rich assemblage of Late Jurassic to Early Cretaceous (Berriasian) vertebrate fossils, including one of the most diverse Early Cretaceous lizard assemblages on record. Here we describe the first articulated lizard skull from Purbeck. The specimen was rediscovered in the collections of the British Geological Survey, having been excavated at least a century ago. Although originally assigned to the Purbeck genus Paramacellodus, with which it shares maxillary and some dental characters, the new Purbeck skull differs from other Purbeck genera, including Paramacellodus, in frontal, pterygoid and maxillary morphology. It is here assigned to a new genus and species. Cladistic analysis groups it with Lacertoidea, unlike Paramacellodus, Becklesius and Parasaurillus which group with scincids and cordyliforms.

New record of Tettigarctidae (Insecta, Hemiptera, Cicadoidea) from the Lower Cretaceous of Brazil

Zootaxa ◽  
2005 ◽  
Vol 1087 (1) ◽  
pp. 53 ◽  
Author(s):  
FEDERICA MENON
Keyword(s):  
Southern Hemisphere ◽  
Early Cretaceous ◽  
Lower Cretaceous ◽  
New Record ◽  
New Genus ◽  
New Genus And Species ◽  
New Discovery

Tettagalma striata, new genus and species of Tettigarctidae (Hemiptera: Cicadoidea), is described from the Lower Cretaceous laminated limestones of the Crato Formation, Brazil. The new discovery represents the first certain record of this family in Brazil and confirms its presence in the Southern Hemisphere during the early Cretaceous. Architettix Hamilton, 1990, from the same formation, and all the taxa originally placed in Cicadoprosbolidae, are also included in Tettigarctidae, as the former is considered a synonym.

The oldest Palaeoaphididae (Insecta: Hemiptera: Aphidomorpha) from the Late Jurassic/Early Cretaceous locality of Khotont (Mongolia)

2013 ◽  
Vol 44 (2) ◽  
pp. 149-155 ◽  
Author(s):  
Dagmara Żyła ◽  
Piotr Wegięrek
Keyword(s):  
Early Cretaceous ◽  
Late Jurassic ◽  
New Genus ◽  
New Genus And Species

A new genus and species of the aphid family Palaeoaphididae, Primpalaeoaphis khotontensis gen. et sp.n. is described from the Late Jurassic/Early Cretaceous locality of Khotont (Mongolia). This is the oldest representative of Palaeoaphididae.

Sinahemeroscopus magnificus, new genus and species of ‘libelluloid’ dragonfly from the Chinese Mesozoic (Odonata, Anisoptera: Nannogomphidae?)

Zootaxa ◽  
2010 ◽  
Vol 2388 (1) ◽  
pp. 44 ◽  
Author(s):  
DI-YING HUANG ◽  
ANDRÉ NEL
Keyword(s):  
Early Cretaceous ◽  
Late Jurassic ◽  
New Genus ◽  
New Genus And Species

Sinahemeroscopus magnificus gen. and sp. nov. is described from the Early Cretaceous of China. We tentatively attribute it to the Nannogomphidae. This family was currently known from the Late Jurassic of Germany.

scholarly journals A new plesiosaurian from the Jurassic–Cretaceous transitional interval of the Slottsmøya Member (Volgian), with insights into the cranial anatomy of cryptoclidids using computed tomography

PeerJ ◽  
2020 ◽  
Vol 8 ◽  
pp. e8652 ◽  
Author(s):  
Aubrey Jane Roberts ◽  
Patrick S. Druckenmiller ◽  
Benoit Cordonnier ◽  
Lene L. Delsett ◽  
Jørn H. Hurum
Keyword(s):  
Computed Tomography ◽  
Phylogenetic Analysis ◽  
High Resolution ◽  
Early Cretaceous ◽  
Late Jurassic ◽  
New Genus ◽  
Pectoral Girdle ◽  
High Latitudes ◽  
New Genus And Species ◽  
Major Clade

Cryptoclidids are a major clade of plesiosauromorph plesiosaurians best known from the Middle—Late Jurassic, but little is known regarding their turnover into the Early Cretaceous. Of the known cryptoclidid genera, most preserve only a limited amount of cranial material and of these Cryptoclidus eurymerus, displays the most complete, but compressed cranium. Thus, the lack of knowledge of the cranial anatomy of this group may hinder the understanding of phylogenetic interrelationships, which are currently predominantly based on postcranial data. Here we present a nearly complete adult cryptoclidid specimen (PMO 224.248) representing a new genus and species Ophthalmothule cryostea gen et sp. nov., from the latest Jurassic to earliest Cretaceous part of the Slottsmøya Member, of central Spitsbergen. The holotype material preserves a complete cranium, partial mandible, complete and articulated cervical, pectoral and anterior to middle dorsal series, along with the pectoral girdle and anterior humeri. High resolution microcomputed tomography reveals new data on the cranial anatomy of this cryptoclidid, including new internal features of the braincase and palate that are observed in other cryptoclidids. A phylogenetic analysis incorporating new characters reveals a novel tree topology for Cryptoclididae and particularly within the subfamily Colymbosaurinae. These results show that at least two cryptoclidid lineages were present in the Boreal Region during the latest Jurassic at middle to high latitudes.

New genus and species of Hexagenitidae (Insecta: Ephemeroptera) from Yixian Formation, China

Zootaxa ◽  
2007 ◽  
Vol 1629 (1) ◽  
pp. 39-50 ◽  
Author(s):  
JIANDONG HUANG ◽  
DONG REN ◽  
NINA D. SINITSHENKOVA ◽  
CHUNGKUN SHIH
Keyword(s):  
New Species ◽  
Early Cretaceous ◽  
Late Jurassic ◽  
New Genus ◽  
Yixian Formation ◽  
New Genus And Species ◽  
Two New Species

A new genus and two new species of the extinct family Hexagenitidae, Epicharmeropsis hexavenulosus gen. et sp. nov. and Epicharmeropsis quadrivenulosus sp. nov., are described from the Late Jurassic-Early Cretaceous Yixian Formation, Hebei and Liaoning Provinces in China. Detailed description and illustration of the specimens along with a brief review of Hexagenitidae are given. By comparing with the imago specimens of so-called Ephemeropsis which were previously reported from China, we believe these Ephemeropsis-like specimens should be placed into Epicharmeropsis gen. nov. and Ephemeropsis Eichwald could be absent in China.

A new genus and species of Palaeontinidae (Insecta: Hemiptera: Cicadomorpha) from the Lower Cretaceous of southern England

Zootaxa ◽  
2008 ◽  
Vol 1751 (1) ◽  
pp. 65 ◽  
Author(s):  
BO WANG ◽  
HAICHUN ZHANG ◽  
EDMUND A. JARZEMBOWSKI
Keyword(s):  
Early Cretaceous ◽  
Lower Cretaceous ◽  
New Genus ◽  
New Genus And Species ◽  
Southern England ◽  
Wing Base ◽  
The Uk

Valdicossus chesteri, a new genus and species belonging to Palaeontinidae (Insecta, Hemiptera), is described based on a well-preserved hindwing from the Early Cretaceous Wealden Supergroup of southern England. The specimen is the first well-preserved hindwing of Palaeontinidae from the UK. It differs from other genera as follows: veins M 1 , M 2 and M 3+4 arise from stem M near wing base; vein M 3+4 unbranched; fusion between veins RP and M 1 basal of the level of wing indentation; and vein A 1 absent.

Protoliupanshania wangi, a new genus and species from the Chinese Early Cretaceous (Odonata: Aeshnoptera: Liupanshaniidae)

Zootaxa ◽  
2010 ◽  
Vol 2387 (1) ◽  
pp. 57 ◽  
Author(s):  
DI-YING HUANG ◽  
ANDRE NEL
Keyword(s):  
Early Cretaceous ◽  
Lower Cretaceous ◽  
New Genus ◽  
Current Knowledge ◽  
Yixian Formation ◽  
Wing Venation ◽  
New Genus And Species ◽  
Western Liaoning

Protoliupanshania wangi, new genus and species, is described from the Lower Cretaceous Yixian Formation of western Liaoning, China. It is probably the sister genus of the clade that comprises all other liupanshaniid genera, based on current knowledge of the wing venation of Paramesuropetala.

scholarly journals A new large Pliosaurid from the Barremian (Lower Cretaceous) of Sáchica, Boyacá, Colombia

2018 ◽  
Vol 22 (4) ◽  
pp. 223-238 ◽  
Author(s):  
María Eurídice Páramo-Fonseca ◽  
Cristian David Benavides-Cabra ◽  
Ingry Esmirna Gutiérrez
Keyword(s):  
Lower Cretaceous ◽  
New Genus ◽  
Cervical Vertebrae ◽  
Cladistic Analysis ◽  
Morphological Characteristics ◽  
Phylogenetic Position ◽  
New Genus And Species ◽  
Mandibular Symphysis ◽  
Caudal Vertebrae ◽  
Mandibular Teeth

A new fossil MP111209-1 found in the Barremian beds of Sáchica, a town near Villa de Leiva representing the more complete skeleton found in the region is described here. After a detailed study of its morphological characteristics, it is evident that the new specimen represents a new genus and species of brachauchenine pliosaurid from Central Colombia that we named Sachicasaurus vitae gen. et sp. nov. Sachicasaurus is a large brachauchenine (almost 10 m in length) characterized by the following combination of characters: skull exceeding two meters in length,  transverse constriction in the rostrum, caniniform teeth present, pineal foramen in a very advanced position, palatines separated in the midline by the pterygoids, very short mandibular symphysis (bearing four teeth positions), reduced number of mandibular teeth (less than 20), slender hyoid bones, 12 cervical vertebrae, cervical centra showing ventral foramina, single rib facet in all cervical centra, at least 40 pre-caudal vertebrae, and ilium with a long posterior projection. Although it is difficult to clearly establish the phylogenetic position of Sachicasaurus viate within Brachaucheninae due to its combination of primitive and derived features, the morphological comparisons and the cladistic analysis show an evident phylogenetic proximity of Sachicasaurus to the Aptian-Albian genus Kronosaurus.

Cranial anatomy of a new crocodyliform (Archosauria: Crocodylomorpha) from the Lower Cretaceous of Song-Liao Plain, northeastern China

2001 ◽  
Vol 38 (12) ◽  
pp. 1653-1663 ◽  
Author(s):  
Xiao-Chun Wu ◽  
Zheng-Wu Cheng ◽  
Anthony P Russell
Keyword(s):  
Early Cretaceous ◽  
Lower Cretaceous ◽  
New Genus ◽  
Phylogenetic Analyses ◽  
Northeastern China ◽  
New Genus And Species ◽  
Anterior Border ◽  
Vertebrate Fauna ◽  
New Form

Rugosuchus nonganensis, a new genus and species of crocodyliform, is erected on the basis of its peculiar cranial features. This late Early Cretaceous species represents the second, and most complete, crocodyliform known from northeastern China. Its discovery is significant for our understanding of both the local vertebrate fauna and its stratigraphical correlations, and the paleobiogeography of the Crocodyliformes. The palatine contribution to the anterior border of the choana excludes the new form from the Eusuchia, and evidence from osteoderms (not detailed in the present paper) suggests that the new form appears to be phylogenetically closer to the Eusuchia than to the Goniopholididae. Therefore, comparisons are made primarily with those taxa which have a closer relationship to the former than the latter. The unsculpted, depressed, and lobe-like posterolateral process of the squamosal is further demonstrated to be ontogenetically variable and thus inappropriate for use as a character in phylogenetic analyses.

The earliest fossil record of true crickets belonging to the Baissogryllidae (Insecta, Orthoptera, Grylloidea)

2019 ◽  
Vol 156 (08) ◽  
pp. 1440-1444 ◽  
Author(s):  
H. Wang ◽  
Y. N. Fang ◽  
Y. Fang ◽  
E. A. Jarzembowski ◽  
B. Wang ◽  
...  
Keyword(s):  
Early Cretaceous ◽  
Fossil Record ◽  
Late Jurassic ◽  
New Genus ◽  
Proximal Part ◽  
Lower Jurassic ◽  
Northwestern China ◽  
Lateral Part ◽  
New Genus And Species ◽  
Stridulatory Apparatus

AbstractBaissogryllidae is an extinct family of the insect superfamily Grylloidea, previously known from Late Jurassic – Early Cretaceous time. A new genus and species, Sinagryllus xinjiangensis gen. et sp. nov., is described here based on a well-preserved forewing from the Lower Jurassic Sangonghe Formation of Xinjiang, northwestern China. It can be attributed to Baissogryllidae based on the combination of the following characteristics: a true mirror in the male tegminal stridulatory apparatus; and a distinct widening of the area between CuA2, lateral part of the diagonal vein, and proximal part of the proximal branch of MP+CuA1. This find represents not only the earliest record of Baissogryllidae, but also the first fossil wing of Grylloidea reported from China.

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