scholarly journals A new Late Jurassic halecomorph fish from the marine Vaca Muerta Formation, Argentina, southwestern Gondwana

Fossil Record ◽  
2016 ◽  
Vol 19 (2) ◽  
pp. 119-129
Author(s):  
Soledad Gouiric-Cavalli
Keyword(s):  
Late Jurassic ◽  
Free Field ◽  
Anatomical Study ◽  
The Body ◽  
New Taxon ◽  
New Genus And Species ◽  
Unique Character ◽  
Vaca Muerta ◽  
Vaca Muerta Formation ◽  
Anatomical Information

Abstract. The knowledge of Mesozoic fish faunas of the Southern Hemisphere is still inadequate; the diversity and evolution of the Late Jurassic marine ichthyofaunas of Argentina remain unclear. One fish recovered from the Tithonian levels of the Los Catutos Member of the Vaca Muerta Formation, southwestern Argentina was considered a "caturid-like" halecomorph for almost 30 years. Recently, it was proposed that it could belong to the Pachycormiformes. A thorough comparative anatomical study of the material is conducted to test whether it could be included in †Caturidae or †Pachycormidae. The specimen is assigned to †Caturidae as a new genus and species: †Catutoichthys olsacheri (http://zoobank.org/urn:lsid:zoobank.org:act:6884876C-075C-433B-90B7-74187FC04C26, registered on 1 June 2016). The new taxon is based on a unique character combination, three of which are exclusive to †Catutoichthys olsacheri among caturids–diplospondylous vertebral column with triangular basidorsals and well-developed and fan-shaped basiventrals; neural and haemal spines strongly inclined to the body axis at an angle of 14°; a large number of infrahaemals; rounded amioid-type scales with an unornamented free field. The new taxon provides anatomical information useful for further understanding the anatomy and evolution of caturid fishes.

A new rhamphorhynchid (Pterosauria: Rhamphorhynchidae) from the Middle/Upper Jurassic of Qinglong, Hebei Province, China

Zootaxa ◽  
2012 ◽  
Vol 3158 (1) ◽  
pp. 1 ◽  
Author(s):  
JUNCHANG LÜ ◽  
DAVID M. UNWIN ◽  
BO ZHAO ◽  
CHUNLING GAO ◽  
CAIZHI SHEN
Keyword(s):  
Late Jurassic ◽  
New Genus ◽  
Upper Jurassic ◽  
Hebei Province ◽  
New Taxon ◽  
New Genus And Species ◽  
Skeletal Morphology ◽  
Unique Character ◽  
Distal Process ◽  
Nasal Process

A heavily compressed, but nearly complete fossil skeleton recovered from the Middle/Upper Jurassic Tiaojishan Forma-tion of Mutoudeng, Qinglong County, Hebei Province, China, represents a new genus and species of long-tailed pterosaur,Qinglongopterus guoi gen. et sp. nov. The holotype and only known specimen has an estimated forelimb length of 0.18m. The new taxon is distinguished by a relatively short skull, a remarkably short pteroid with a distinctive knob-like distalexpansion, and a prepubis with a relatively slender distal process. Phylogenetic analysis demonstrates that Qinglongopter-us is a member of Rhamphorhynchidae, exhibiting many of the unique character states found in members of this clade.Qinglongopterus is strikingly similar to Rhamphorhynchus and more closely related to this taxon than to any other rham-phorhynchine, this pairing is supported by morphometric data and several synapomorphies (short, broad nasal process ofthe maxilla; forelimb length more than four times that of the hind limb; wing-phalanx one more than twice the length ofthe tibia). Qinglongopterus demonstrates that the highly derived skeletal morphology of Rhamphorhynchus, known onlyfrom the latest Jurassic (Tithonian) of Europe, had already appeared by the start of the Late Jurassic. This hints at evolu-tionary stasis in Rhamphorhynchinae, a phenomenon seemingly also present in two other clades of basal pterosaurs,Anurognathidae and Scaphognathinae, and contrasting sharply with basal monofenestratans which appear to have undergone extensive evolutionary change during the same interval.

The Late Jurassic pterosaurs from northern Patagonia, Argentina

2012 ◽  
Vol 103 (3-4) ◽  
pp. 399-408 ◽  
Author(s):  
Laura Codorniú ◽  
Zulma Gasparini
Keyword(s):  
Southern Hemisphere ◽  
Late Jurassic ◽  
New Genus ◽  
Upper Jurassic ◽  
New Genus And Species ◽  
Vaca Muerta ◽  
Neuquen Basin ◽  
Neuquén Basin ◽  
Vaca Muerta Formation ◽  
A New Species

ABSTRACTRecords of flying Jurassic reptiles are very scarce in the Southern Hemisphere. Upper Jurassic pterosaurs have been discovered in marine Tithonian sediments of the Vaca Muerta Formation, in the Neuquén Basin, Patagonia, Argentina. Only four specimens are known so far: the first from Arroyo Picún Leufú, and the other three from the lithographic limestones of Los Catutos. Here, we update knowledge of Late Jurassic pterosaurs from northwest Patagonia. We revise the diagnosis and description of a previously described pterodactyloid, which is named as a new genus and species, Wenupteryx uzi. This small-sized pterosaur shows affinities with Euctenochasmatia or Archaeopterodactyloidea, and represents the most complete Jurassic pterosaur so far known from the Southern Hemisphere. We also report a recent finding suggesting that the new specimen belongs to a new species of pterodactyloid pterosaur. These records show that at least three different taxa of pterosaurs coexisted in the Neuquén Basin: Herbstosaurus, Wenupteryx and a more derived pterodactyloid that represents the largest pterosaur known from the Upper Jurassic of Gondwana.

A New Genus and Species of Delphacidae (Hemiptera: Fulgoroidea: Delphacidae) from Costa Rica

Zootaxa ◽  
2019 ◽  
Vol 4657 (2) ◽  
pp. 361-368
Author(s):  
CHARLES R. BARTLETT
Keyword(s):  
Costa Rica ◽  
New Genus ◽  
The Body ◽  
New Taxon ◽  
Ventral Margin ◽  
New Genus And Species ◽  
Distinctive Features ◽  
Caudal Margin ◽  
General Appearance

Melaniphax suffusculus gen. et sp. nov. is described from Costa Rica, representing the 57th delphacid species recorded from the country to date. The new genus is superficially similar to Caenodelphax Fennah in general appearance in that the body is uniformly colored with the wings infuscated. Distinctive features of the new taxon include simple, forceps-like gonostyli, a broadly compressed aedeagus with large serrate lateral flanges, and the anal tube bearing a pair of short, stout, truncate, caudally-directed processes on the ventro-caudal margin and slender, elongate processes from the antero-ventral margin. 

New genus and species of brachypterous planthopper of the tribe Elicini (Hemiptera: Fulgoroidea: Tropiduchidae) from Chile

Zootaxa ◽  
2018 ◽  
Vol 4413 (3) ◽  
pp. 586
Author(s):  
JUAN F. CAMPODONICO
Keyword(s):  
South America ◽  
New Genus ◽  
The Body ◽  
New Taxon ◽  
New Genus And Species ◽  
The Third

Selamorpha variegata gen. et sp. nov. is described from Coquimbo Region, Chile. It is characterized by the body dorsally saddle-shaped, brachypterous, tegmina with moderate reticulation, metope elongate, and terga caudally elevated. The new taxon is the second genus of Elicini in Chile and the third of South America. It was found associated with Calceolaria polifolia Hook. (Calceolariaceae). 

A new genus and species of monostiliferous hoplonemertean (Enopla: Hoplonemertea: Monostilifera) from New Zealand

Zootaxa ◽  
2002 ◽  
Vol 50 (1) ◽  
pp. 1 ◽  
Author(s):  
RAY GIBSON ◽  
MALIN STRAND
Keyword(s):  
New Zealand ◽  
Body Wall ◽  
New Genus ◽  
Morphological Features ◽  
The Body ◽  
Full Length ◽  
New Taxon ◽  
New Genus And Species ◽  
The Brain

Vulcanonemertes rangitotoensis gen. et sp. nov. (Hoplonemertea: Monostilifera) is described and illustrated. Major morphological features of the new taxon include an anteriorly divided body wall longitudinal musculature, no pre-cerebral septum, cephalic glands which reach far back behind the brain, and accessory lateral nerves which extend the full length of the body.

A new genus and species of Old World Opsiini (Hemiptera: Cicadellidae: Deltocephalinae), with a key to genera and species checklist for the tribe

Zootaxa ◽  
2010 ◽  
Vol 2607 (1) ◽  
pp. 55 ◽  
Author(s):  
WU DAI ◽  
WEI CUI ◽  
BIN XIAO ◽  
YALIN ZHANG
Keyword(s):  
New Genus ◽  
Southern China ◽  
The Body ◽  
New Taxon ◽  
New Genus And Species ◽  
Old World ◽  
Line Drawings ◽  
Species Checklist ◽  
Determination System ◽  
Sex Determination System

Introrsa, a new genus and species of the tribe Opsiini from southern China (Yunnan) is described. Diagnosis of the new genus together with information on the karyotype is given. Introrsa most closely resembles Opsius Fieber, but it is the first genus of the Opsiini with the body longer than 8 mm and can be distinguished from the latter by body not wedgeshaped, head as broad as pronotum and aedeagus with socle not bulbous. The sex determination system is XO/XX and the karyotype of the species is 2n=12(10+XO). The detailed morphology of the new genus is described; external habitus and line drawings of male and female gentalia of the new taxon are given. An annotated check-list and generic key to Old World members of the leafhopper tribe Opsiini are provided.

Calicovatellus petrodytes, a new genus and species of primitive vatelline diving beetle (Coleoptera: Dytiscidae: Hydroporinae: Vatellini) from the Miocene Barstow Formation, southern California, USA

2001 ◽  
Vol 75 (4) ◽  
pp. 890-894 ◽  
Author(s):  
Kelly B. Miller ◽  
Sara H. Lubkin
Keyword(s):  
Southern California ◽  
New Genus ◽  
Three Dimensional ◽  
Evolutionary Information ◽  
Fossil Insects ◽  
New Taxon ◽  
New Genus And Species ◽  
Phylogenetic Placement ◽  
Unique Character ◽  
Barstow Formation

Relatively few fossil dytiscids have been described. This is unfortunate since fossils can provide useful phylogenetic and evolutionary information including unique character combinations not present in extant taxa and minimum ages for divergences. However, even when fossils are found, important characters are often not visible since they may be poorly preserved or obscured. The fossil insects present in calcareous nodules from the Miocene Barstow Formation of the Calico Mountains in Southern California are exceptionally well preserved (Palmer, 1957). The original organisms are replaced by silica or other minerals and when the nodules are dissolved in formic acid, the three-dimensional fossil can be retrieved from the resulting residue. These nodules have yielded a wide variety of fossils, including larvae of the dytiscid species Schistomerus californense Palmer, 1957 and numerous other terrestrial and fresh-water arthropods (Palmer, 1957). The purposes of this paper are to describe a new dytiscid genus and species from an exceptionally well-preserved specimen from the Barstow Formation and to present a hypothesis of the phylogenetic placement of the new taxon.

A new ichthyosaur from the Tithonian (Late Jurassic) of the Neuquén Basin, northwestern Patagonia, Argentina

1997 ◽  
Vol 71 (3) ◽  
pp. 479-484 ◽  
Author(s):  
M. S. Fernández
Keyword(s):  
South America ◽  
Late Jurassic ◽  
New Genus ◽  
New Taxon ◽  
New Genus And Species ◽  
The Family ◽  
Neuquen Basin ◽  
Neuquén Basin

A large ichthyosaur from the Early Tithonian (Late Jurassic) of the Neuquén province, Argentina, represents a new genus and species, Caypullisaurus bonapartei, within the family Ichthyosauridae. The holotype is the most complete skeleton of a mature ichthyosaur known to date from the Jurassic of South America. In comparison with other Late Jurassic ichthyosaurs, the new taxon shares a long and slender rostrum, degenerate dentition in adults, and the enlargement of the orbit with Ophthalmosaurus. Unlike Ophthalmosaurus, the forefin of Caypullisaurus has four major digits composed of tightly packed, polygonal phalanges, and pre- and post-axial accessory digits. Caypullisaurus demonstrates that ichthyosaurs were more diverse during the Late Jurassic than thought previously.

A new furry lobster (Crustacea, Decapoda, Synaxidae) from the Oxfordian (Upper Jurassic) of northeastern France

2020 ◽  
Vol 296 (3) ◽  
pp. 327-330 ◽  
Author(s):  
René H.B. Fraaije ◽  
Barry W.M. Van Bakel ◽  
John W.M. Jagt ◽  
Richard Brochet
Keyword(s):  
Czech Republic ◽  
Late Jurassic ◽  
New Genus ◽  
Upper Jurassic ◽  
New Taxon ◽  
New Genus And Species ◽  
Diagnostic Features ◽  
Northeastern France

A new genus and species of achelatan lobster, Palaeopalinurellus culocervus, from the "Calcaire crayeux de Maxey" limestones (middle Oxfordian, Transversarium Zone) at "Le Cul du Cerf", near Orquevaux (Haute-Marne, northeastern France), are described. The new taxon constitutes the earliest record to date of a furry lobster worldwide and extends the stratigraphical range of this group of palinurids significantly. Another Late Jurassic (Tithonian) palinurid, Palinurus strambergensis Bachmayer, 1959, from tramberk (Moravia, Czech Republic), reveals the diagnostic features of the new genus and is here transferred to it.

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