An asteroid (Echinodermata) faunule from the Oxfordian Swift Formation (Upper Jurassic) of Montana

2016 ◽  
Vol 90 (6) ◽  
pp. 1160-1168
Author(s):  
Daniel B. Blake ◽  
Thomas E. Guensburg
Keyword(s):  
New Genus ◽  
Upper Jurassic ◽  
Wide Distribution ◽  
Time Interval ◽  
New Genus And Species ◽  
The North ◽  
Class Level ◽  
Regional Location ◽  
Favorable Conditions ◽  
Continental Interior

AbstractA new Late Jurassic (Oxfordian) asteroid (Echinodermata) faunule from the Swift Formation of Montana includes representatives of four genera including the new genus and speciesAtalopegaster gundersoni(Stichasteridae),Eokainastersp. indet. (Astropectinidae), an indeterminate probable member of the Goniasteridae, and a species indeterminate beyond the class level. Because of weathering at the outcrop, preservation is poor.Although representing an unusual depositional occurrence, overall faunule composition appears comparable to that found in a similar modern environment. The faunule is comparable in age and regional location to earlier Jurassic asteroid discoveries, suggesting wide distribution during a geologically brief time interval of favorable conditions. Asteroids are only rarely reported from the Mesozoic of the North American continental interior, and co-occurrence of multiple fossil taxa is unusual on a global basis.

The description and phenetic relationships of a new Ichthyosaur genus from the Upper Jurassic of England

1976 ◽  
Vol 13 (5) ◽  
pp. 668-683 ◽  
Author(s):  
C. McGowan
Keyword(s):  
New Genus ◽  
Middle Triassic ◽  
Upper Jurassic ◽  
Evolutionary Trends ◽  
Phenetic Analysis ◽  
New Genus And Species ◽  
The North ◽  
Phenetic Relationships ◽  
Principal Coordinates ◽  
Temporal Sequences

A large and previously unknown ichthyosaur is reported from the Kimmeridge Clay (Upper Jurassic) of Stowbridge, Norfolk, England. The only valid genera described from the Upper and Middle Jurassic are considered to be Ophthalmosaurus Seeley and Nannopterygius von Huene, and since the Stowbridge specimen is distinct from these, a new genus and species, Grendelius mordax gen. et sp. nov., are erected. Using cluster and principal coordinates analyses, G. mordax was found to have closest phenetic affinities with Platypterygius americanus (Nace) of the North American Cretaceous, and with an undescribed ichthyosaur from the Middle Triassic of Switzerland, and least phenetic affinity with Ophthalmosaurus discus (Marsh).The phenetic analysis also revealed that the division of the Ichthyosauria into latipinnates and longipinnates is questionable. Stenopterygius quadriscissus (Quenstedt), long considered a longipinnate, is herein shown to have closer phenetic affinity with latipinnate ichthyosaurs. The close phenetic affinity between the skulls of P. americanus and the undescribed Swiss ichthyosaur is inconsistent with currently held views of cranial evolution in ichthyosaurs, and points to the shortcomings of tracing evolutionary trends in temporal sequences of fossils.

scholarly journals A boring foraminiferan from the Upper Jurassic of England and Northern France

1993 ◽  
Vol 12 (1) ◽  
pp. 83-89 ◽  
Author(s):  
C. R. Plewes ◽  
T. J. Palmer ◽  
J. R. Haynes
Keyword(s):  
New Genus ◽  
Substrate Surface ◽  
Upper Jurassic ◽  
New Genus And Species ◽  
Southern England ◽  
Northern France

Abstract. Small rosette borings, consisting of an excavated pit from which is subtended a system of branching galleries, are common in carbonate skeletal substrates in the Upper Jurassic Oxford Clay (Callovian-Oxfordian) and Kimmeridge Clay (Kimmeridgian) of southern England and northern France. The opening of the pit onto the substrate surface is surrounded by an agglutinated collar, which suggests that they may be the work of Foraminifera. The new genus and species, Globodendrina monile, are erected to accommodate them. Other examples of boring in the Foraminiferida are reviewed. It is proposed that other similar rosette boring ichnogenera may also be the work of foraminiferans.

Steringovermes notacanthi n. gen., n. sp. (Digenea: Fellodistomidae) from the deep-sea spiny eel Notacanthus bonaparte (Notacanthiformes: Notacanthidae) from the north eastern Atlantic and a new host record for Olssonium turneri

Zootaxa ◽  
2004 ◽  
Vol 684 (1) ◽  
pp. 1 ◽  
Author(s):  
RODNEY A. BRAY
Keyword(s):  
Deep Sea ◽  
New Genus ◽  
Host Record ◽  
Excretory Vesicle ◽  
New Genus And Species ◽  
New Host ◽  
New Host Record ◽  
The North ◽  
North Eastern ◽  
First Time

Steringovermes notacanthi, a new genus and species of fellodistomine digenean, is described from the deep-sea spiny eel Notacanthus bonaparte from below 1,000m depth in the north eastern Atlantic. It differs from other related genera in the unique combination of a V-shaped excretory vesicle, multilobate, mainly post-testicular ovary and extensive vitelline fields extending into both the foreand hindbody. In addition, the fellodistomine Olssonium turneri Bray & Gibson, 1980 is reported for the first time from a fish not of the genus Alepocephalus, namely the alepocephalid Narcetes stomias.

Glabrimycetoporus amoenus, a new tachyporine genus and species of Mesozoic Staphylinidae (Coleoptera) from Liaoning, China

Zootaxa ◽  
2009 ◽  
Vol 2225 (1) ◽  
pp. 63-68 ◽  
Author(s):  
YANLI YUE ◽  
YUNYUN ZHAO ◽  
DONG REN
Keyword(s):  
Lower Cretaceous ◽  
New Genus ◽  
Abdominal Tergite ◽  
Upper Jurassic ◽  
Yixian Formation ◽  
Liaoning Province ◽  
New Genus And Species ◽  
Ne China

A new genus and species of well-preserved fossil Staphylinidae is described and illustrated. Glabrimycetoporus amoenus Yue, Zhao & Ren, gen. et sp. nov. is assigned to the tribe Mycetoporini in the subfamily Tachyporinae based on the following characters: head more or less inserted into prothorox, the tenth abdominal tergite broad and oblong; antennal insertions exposed and located anterior to a line drawn between anterior edges of eyes; body strongly tapered to the narrow head and abdominal apex. The specimen was discovered in the Upper Jurassic–Lower Cretaceous Yixian Formation of Beipiao City, Liaoning Province, NE China.

A new Unionoidea (Mollusca, Bivalvia) from the Tacuarembó Formation (Upper Triassic–Upper Jurassic), Uruguay

1993 ◽  
Vol 67 (6) ◽  
pp. 962-965 ◽  
Author(s):  
Sergio Martinez ◽  
Alfredo Figueiras ◽  
Jorge S. da Silva
Keyword(s):  
New Genus ◽  
Upper Jurassic ◽  
Upper Triassic ◽  
New Genus And Species ◽  
Large Size

A new genus and species of Unionoidea, Tacuaremboia caorsii, are described from the Tacuarembó Formation (Upper Triassic–Upper Jurassic) of Uruguay. The genus is distinguished from other Unionoidea by its large size, thickness, edentulous hingeline, and the presence of claustra. It has some similarities with the Anodontinae and the Archanodontacea, but it cannot be assigned to any of the known family units.

Octomagelona bizkaiensis (Polychaeta: Magelonidae) a new genus and species from the Capbreton Canyon (Bay of Biscay, north-east Atlantic)

2001 ◽  
Vol 81 (2) ◽  
pp. 221-224 ◽  
Author(s):  
Florencio Aguirrezabalaga ◽  
Argiloa Ceberio ◽  
Dieter Fiege
Keyword(s):  
New Genus ◽  
Bay Of Biscay ◽  
New Genus And Species ◽  
East Atlantic ◽  
North East ◽  
The North ◽  
The Family ◽  
North Eastern

Octomagelona bizkaiensis (Annelida: Polychaeta), a new genus and species of the family Magelonidae is described from the north-eastern Atlantic. The specimens were collected from the Capbreton Canyon, Bay of Biscay, at a depth of 1000–1040 m. The new genus and species differs from all known genera and species of the family Magelonidae by the presence of eight instead of nine thoracic chaetigers.

scholarly journals III.—On Palæosaccus Dawsoni, Hinde, a New Genus and Species of Hexactinellid Sponge from the Quebec Group (Okdovician) at Little Métis, Quebec, Canada

1893 ◽  
Vol 10 (2) ◽  
pp. 56-59 ◽  
Author(s):  
George J. Hinde
Keyword(s):  
New Genus ◽  
New Genus And Species ◽  
North Shore ◽  
The North ◽  
Hexactinellid Sponge ◽  
Carbonaceous Shales ◽  
Vertical Thickness ◽  
Siliceous Sponges

In 1887 and 1888, Sir J. W. Dawson discoveredindark carbonaceous shales of the Quebec group, exposed at Little Métis, on the north shore of the Lower St. Lawrence, some thin bands of rock largely filled with the remains of siliceous sponges, and similar fossils were found to be sparsely scattered in adjacent beds through a vertical thickness of forty feet. This discovery of an abundant sponge fauna at so low an horizon,inrocks previously considered

A new genus and a new species of Tropidopolinae (Orthoptera: Acrididae) from India

ENTOMON ◽  
2019 ◽  
Vol 44 (3) ◽  
pp. 191-196
Author(s):  
Mohd. Imran Khan ◽  
Mohd. Kamil Usmani
Keyword(s):  
New Species ◽  
New Genus ◽  
Species Level ◽  
Female Genitalia ◽  
Eastern Region ◽  
New Genus And Species ◽  
Male And Female ◽  
The North ◽  
North Eastern ◽  
A New Species

A new genus Neooxyrrhepes gen. n. with a new species Neooxyrrhepes meghalayensis n. from Meghalaya, a state of the North Eastern region of India. Description and illustrations of the new genus and species are given. A key to the genera of subfamily Tropidopolinae from North Eastern states of India is also provided. Additonally the characters of male and female genitalia at generic and species level are also given.

Late Paleozoic edrioasteroids (Echinodermata) from the North American Midcontinent

1996 ◽  
Vol 70 (6) ◽  
pp. 969-985 ◽  
Author(s):  
Colin D. Sumrall
Keyword(s):  
New Species ◽  
North American ◽  
Type Species ◽  
New Genus ◽  
Late Paleozoic ◽  
New Genus And Species ◽  
New Classification ◽  
The North ◽  
Three New Species ◽  
To Receive

A new classification is proposed for late Paleozoic Edrioasteroidea (Echinodermata), separating forms with the advanced clavate thecal design from those with the ancestral pyrgate thecal design, and a new Subfamily Discocystinae is erected to receive the clavate agelacrinitid edrioasteroids. Lepidodiscus Meek and Worthen is restricted to the pyrgate type species L. squamosus (Meek and Worthen) and two unnamed species, whereas the clavate L. laudoni (Bassler) is assigned to Clavidiscus, new genus. The clavate Discocystis priesti Strimple and three new species, Hypsiclavus kinsleyi, new genus and species, Hypsiclavus huntsvillensis, new genus and species, and Hypsiclavus guensburgi, new genus and species, are placed in Hypsiclavus, new genus. Bostryclavus, new genus, is erected to receive Echinodiscus sampsoni Miller. A redescription of Discocystis kaskaskiensis (Hall) and a diagnosis of Spiraclavus Sumrall are included for completeness.

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.

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