A new archosaur from the Upper Triassic Pardonet Formation of British Columbia

1998 ◽  
Vol 35 (10) ◽  
pp. 1134-1142 ◽  
Author(s):  
Elizabeth L Nicholls ◽  
Donald B Brinkman ◽  
Xiao-Chun Wu
Keyword(s):  
British Columbia ◽  
New Genus ◽  
Upper Triassic ◽  
Neural Spine ◽  
New Genus And Species ◽  
Incertae Sedis

Sikannisuchus huskyi, a new genus and species of archosaur, is described from the Upper Triassic (Norian) Pardonet Formation of northeastern British Columbia. It has a broad, flat skull, and may have reached 4 m in length. It is referred to the Archosauria on the basis of a lateral mandibular fenestra, laterally compressed serrated teeth, elongate transverse processes, neural spine table, osteoderms, and thecodont dentition. It is autapomorphic in that the postfrontal enters the border of both the orbit and the supratemporal fenestra, and it has a large prefrontal that contacts both the nasal and the postfrontal, excluding the frontal from the margin of the orbit. The presence of osteoderms and a well-developed clavicle exclude Sikannisuchus from the Ornithodira; however, in the absence of any preserved limb material, we cannot assign it to the Crurotarsi. Sikannisuchus is not currently referable to any known taxon of archosaur and is left as Archosauria incertae sedis.

A remarkable small ichthyosaur from the Upper Triassic of British Columbia, representing a new genus and species

1995 ◽  
Vol 32 (3) ◽  
pp. 292-303 ◽  
Author(s):  
C. McGowan
Keyword(s):  
British Columbia ◽  
New Genus ◽  
Middle Triassic ◽  
Lower Jurassic ◽  
Upper Triassic ◽  
New Taxon ◽  
New Genus And Species

A small, nearly complete ichthyosaur skeleton is described from the Upper Triassic of Williston Lake, in northeastern British Columbia. The age of the material, based on conodonts, is early Norian. Although the length of the entire skeleton would probably not have exceeded 1 m, there is no evidence of immaturity–quite the contrary. Named Hudsonelpidia brevirostris, the new taxon shares some features with Triassic taxa, as exemplified by Mixosaurus from the European Middle Triassic, and with post-Triassic ichthyosaurs like Ichthyosaurus, from the English Lower Jurassic. Mixosaurian characters include an elongate tibia with emarginated pre- and postaxial margins, and phalanges in the hindfin with pre- and postaxial notches. Like Ichthyosaurus, the humérus is elongate rather than broad, so too is the pubis and ischium. Mixosaurus is unusual among Triassic ichthyosaurs for having a relatively large orbit, but the orbit is even more prominent in Hudsonelpidia, probably because of the shortness of the snout. Hudsonelpidia has an unusually large femur that approaches the length of the humérus, dwarfing the rest of the hindfin. The rostrum is unique in being perforated by foramina, but this could possibly be an abnormality.

A new cockroach (Blattaria: Caloblattinidae) from the Upper Triassic Xujiahe Formation of Sichuan Province, southwestern China

2013 ◽  
Vol 44 (2) ◽  
pp. 167-174
Author(s):  
Yan Fang ◽  
Haichun Zhang ◽  
Bo Wang ◽  
Daran Zheng
Keyword(s):  
Elemental Analysis ◽  
Anterior Margin ◽  
New Genus ◽  
Sichuan Province ◽  
Upper Triassic ◽  
Southwestern China ◽  
New Taxon ◽  
New Genus And Species ◽  
X Ray ◽  
Xujiahe Formation

A new genus and species of the cockroach family Caloblattinidae, Dazhublattella lini gen. et sp.n., is described from the Upper Triassic Xujiahe Formation of Sichuan Province, in southwestern China. The new taxon is similar to the Triassic Caloblattina mathildae (Geinitz, 1883) (Vršanský & Ansorge 2007) in the venation and pattern, but differs in the less elongated forewing with arched anterior margin. An elemental analysis of the wing is undertaken using Energy Dispersive X-ray analysis.

Xenosellidae, a new family of Janiroidea (Asellota: Isopoda:  Crustacea), for Xenosella coxospinosa gen. nov., sp. nov.,  from the marine bathyal of eastern Australia

Zootaxa ◽  
2005 ◽  
Vol 1085 (1) ◽  
pp. 21 ◽  
Author(s):  
JEAN JUST
Keyword(s):  
New Species ◽  
Body Shape ◽  
New Genus ◽  
New Genus And Species ◽  
South Eastern ◽  
Incertae Sedis ◽  
New Family ◽  
Eastern Australia ◽  
Similar Body ◽  
South Eastern Australia

A new genus and species of janiroidean Asellota, Xenosella coxospinosa, is described from the mid-bathyal slope off the coast of south-eastern Australia. Following a comparison of the new species to several families of broadly similar body shape, with emphasis on monotypic Pleurocopidae, a new family, Xenosellidae, is proposed for the new species. In the course of comparing relevant taxa, the current placements of Prethura Kensley in the Santiidae and Salvatiella Müller in the Munnidae are rejected. The two genera are considered to be incertae sedis within the Asellota superfamily Janiroidea pending further studies.

scholarly journals Notes on Cretaceous amber Braconidae (Hymenoptera), with descriptions of two new genera

2016 ◽  
pp. 1 ◽  
Author(s):  
Michael S. Engel
Keyword(s):  
Late Cretaceous ◽  
New Genus ◽  
Hind Wing ◽  
New Combination ◽  
New Genera ◽  
New Genus And Species ◽  
Incertae Sedis

A new genus and species of basal cyclostome Braconidae is described and figured from a male preserved in mid-Cretaceous amber from northern Myanmar.  <strong><em>Rhetinorhyssalus morticinus</em></strong> Engel, new genus and species, is interesting for its combination of primitive features such as a minute apical costal cell and anal stubs in the forewing, while lacking 2Cu in the hind wing, a putatively derived trait.  As such, the genus may represent a lineage diverging from the braconid stem subsequent to many protorhyssalines, while remaining basal relative to generalized cyclostome groups such as Rhyssalinae.  In addition, the Late Cretaceous <em>Diospilus allani</em> Brues, in Campanian Canadian amber, is transferred to <strong><em>Diorhyssalus</em></strong> Engel, new genus, and its similarity to <em>Rhetinorhyssalus</em> is discussed.  This transfer results in the new combination, <em>Diorhyssalus allani</em> (Brues).  Both genera are tentatively considered as subfamily <em>incertae sedis</em>.

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.

Azygokeras columbiae, a New Genus and Species of Marine Epibenthic Copepod (Calanoida: Aetideidae) from British Columbia

1976 ◽  
Vol 33 (7) ◽  
pp. 1547-1552 ◽  
Author(s):  
Peter A. Koeller ◽  
Jack L. Littlepage
Keyword(s):  
British Columbia ◽  
New Genus ◽  
New Genus And Species

Azygokeras columbiae n.gen., n.sp. can be distinguished from other genera of Aetideidae by the asymmetrical first antennae of the male, the setation of the first two segments of the second antennal exopod of the female, and by the spinulation on basipods and rami of the swimming legs of both sexes. The animal was found only in deep hauls from Bute Inlet and is probably an epibenthic form.

scholarly journals A NEW GENUS AND SPECIES OF SPHENODONTIAN FROM THE GHOST RANCHCOELOPHYSISQUARRY (UPPER TRIASSIC: APACHEAN), ROCK POINT FORMATION, NEW MEXICO, USA

Palaeontology ◽  
2008 ◽  
Vol 51 (4) ◽  
pp. 827-845 ◽  
Author(s):  
ANDREW B. HECKERT ◽  
SPENCER G. LUCAS ◽  
LARRY F. RINEHART ◽  
ADRIAN P. HUNT
Keyword(s):  
New Mexico ◽  
New Genus ◽  
Upper Triassic ◽  
New Genus And Species

Muribacinus gadiyuli, (Thylacinidae: Marsupialia), a very plesiomorphic thylacinid from the Miocene of Riversleigh, northwestern Queensland, and the problem of paraphyly for the Dasyuridae (Marsupialia)

1996 ◽  
Vol 70 (6) ◽  
pp. 1032-1044 ◽  
Author(s):  
Stephen Wroe
Keyword(s):  
New Genus ◽  
Late Oligocene ◽  
New Genus And Species ◽  
Character Analysis ◽  
Incertae Sedis ◽  
The Family ◽  
Growing Body ◽  
Fossil Data ◽  
New Evidence

A new genus and species of thylacinid, Muribacinus gadiyuli, is described from Miocene deposits of Riversleigh in northwestern Queensland. Muribacinus gadiyuli shares six character states associated with carnassialisation common among thylacinids, but is uniformly less derived for each. The closest affinities of this species lie with another plesiomorphic thylacinid from Riversleigh, Nimbacinus dicksoni. Two previously recognised thylacinid synapomorphies are reconsidered in the light of new evidence. A growing body of molecular and fossil data indicates that the modern dasyurid radiation is a relatively recent phenomenon. Character analysis suggests that no reliable dental synapomorphies define the Dasyuridae at present. It is proposed that a number of plesiomorphic late Oligocene and Miocene taxa previously considered as dasyurids be regarded as Dasyuromorphia incertae sedis pending the identification of shared derived dental characters for the family, or the discovery of more complete material.

scholarly journals Crocodyliform affinities for Kemkemia auditorei Cau & Maganuco, 2009 from the Late Cretaceous of Morocco

2012 ◽  
Vol 153 (1) ◽  
pp. 119 ◽  
Author(s):  
Gabriel Lio ◽  
Federico Agnolin ◽  
Andrea Cau ◽  
Simone Maganuco
Keyword(s):  
Upper Cretaceous ◽  
New Genus ◽  
Phylogenetic Position ◽  
Caudal Vertebra ◽  
New Genus And Species ◽  
Theropod Dinosaur ◽  
Incertae Sedis ◽  
Theropod Dinosaurs ◽  
Neural Canal ◽  
Posterolateral Margin

<em>Kemkemia auditorei</em> Cau &amp; Maganuco, 2009 was recently described as a new genus and species of theropod dinosaur on the basis on an isolated distal caudal vertebra. The holotype and only known specimen comes from Kem Kem beds (Upper Cretaceous) of Morocco. In the present paper we review the phylogenetic position of <em>Kemkemia</em> and we conclude that this taxon belongs to Crocodyliformes. It shares with crocodyliforms the presence of a concavity at the posterolateral margin of neural spines, an inflated neural canal, and reduced prezygapophyses, among other traits. This combination of characters clearly distinguishes <em>Kemkemia</em> from theropod dinosaurs. In this way, <em>Kemkemia</em> is here considered as a Crocodyliformes <em>incertae sedis</em>, and based on the absence of unique characters, the genus and species <em>Kemkemia</em> auditorei is proposed as a nomen <em>dubium</em>.

Earliest North American articulated freshwater acanthomorph fish (Teleostei: Percopsiformes) from Upper Cretaceous deposits of Alberta, Canada

2019 ◽  
Vol 157 (7) ◽  
pp. 1087-1096
Author(s):  
Alison M. Murray ◽  
Donald B. Brinkman ◽  
Michael G. Newbrey ◽  
Andrew G. Neuman
Keyword(s):  
Phylogenetic Analysis ◽  
Upper Cretaceous ◽  
New Genus ◽  
Sister Group ◽  
Neural Spine ◽  
New Taxon ◽  
New Genus And Species ◽  
Fossil Material ◽  
Species Being ◽  
Cretaceous Deposits

AbstractFossil material from the Maastrichtian part of the Scollard Formation is identified as belonging to an acanthomorph fish. An articulated specimen, preserved in part and counterpart, is a member of the paracanthopterygian order Percopsiformes, based on it having a full neural spine on the second preural centrum and two epurals in the caudal skeleton (both paracanthopterygian characters), as well as six branchiostegal rays and an anterodorsal excavated margin on the opercle (percopsiform characters). We name this as a new genus and species, Lindoeichthys albertensis. A phylogenetic analysis with no prior constraints recovered a single most-parsimonious tree with the new taxon placed as the sister group to a clade containing the Palaeocene Montana genus Mcconichthys + Percopsidae. However, this analysis did not recover the traditional percopsiforms (including Aphredoderidae and Amblyopsidae) as monophyletic. A second analysis, in which we constrained the traditional members of the Percopsiformes to be monophyletic, resulted in the new species being placed as the sister group to Percopsis. The articulated percopsiform specimen from the Pisces Point locality allows isolated dentaries from vertebrate microfossil localities to be identified as being from a member of that group. These isolated elements first appear in the late Campanian Judith River Group of Alberta and the Kaiparowits Formation of Utah, documenting that percopsiform fishes were present in the Western Interior of North America at least 75 Ma ago.

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