An Early Devonian (Emsian) acanthodian from the Bear Rock Formation, Anderson River, Northwest Territories, Canada

2002 ◽  
Vol 39 (10) ◽  
pp. 1457-1465 ◽  
Author(s):  
Stephen L Cumbaa ◽  
Hans-Peter Schultze
Keyword(s):  
Northwest Territories ◽  
New Genus ◽  
Taxonomic Diversity ◽  
New Taxon ◽  
New Genus And Species ◽  
Early Devonian ◽  
Rock Formation ◽  
Nasal Bones ◽  
Size Number ◽  
The Family

A new genus and species of an Early Devonian (Emsian) mesacanthid acanthodiform from outcrops of the Bear Rock Formation along the Anderson River, Northwest Territories, Canada, is described. The new taxon is distinct from other mesacanthid genera and (or) species in having mesiolaterally expanded skull roof plates and paired nasal bones. Mesacanthids have fin-spines that are similar in size, number, position, and proportions. This new genus is the fourth in the family Mesacanthidae. The wider distribution and apparent taxonomic diversity represented by the discovery of the new genus are indications that the latest-surviving and arguably most advanced acanthodian group, the Acanthodiformes, was already well established in the Early Devonian.

A new genus and species of groundwater isopod of the family Protojaniridae (Isopoda: Asellota: Gnathostenetroidoidea) from southern Chile

Zootaxa ◽  
2021 ◽  
Vol 4966 (5) ◽  
pp. 550-562
Author(s):  
JORGE PÉREZ-SCHULTHEISS ◽  
GEORGE D. F. WILSON
Keyword(s):  
New Genus ◽  
South American ◽  
New Taxon ◽  
Southern Chile ◽  
New Genus And Species ◽  
The Third ◽  
The Family ◽  
Apical Lobe ◽  
Antennal Scale ◽  
Freshwater Springs

A new asellotan isopod of the family Protojaniridae Fresi, Idato & Scipione, 1980 is described from freshwater springs in the Osorno province, Los Lagos region, southern Chile. Wiyufiloides osornoensis gen. & sp. n. is the third South American protojanirid species and the first known groundwater isopod in Chile. The new genus and species is principally characterized by the presence of a vestigial antennal scale, a strongly subchelate pereiopod I and the absence of an apical lobe on the protopod of pleopod II. The new taxon is described in detail and figures are given. 

scholarly journals Muenstraia, ein neues Rugosa-Genus (Anthozoa) aus dem Obersilur und Unterdevon

Fossil Record ◽  
2001 ◽  
Vol 4 (1) ◽  
pp. 71-82 ◽  
Author(s):  
D. Weyer
Keyword(s):  
Type Species ◽  
New Genus ◽  
New Taxon ◽  
Early Devonian ◽  
Middle Ordovician ◽  
Traditional Definition ◽  
The Family ◽  
Definition Of

<i>Muenstraia</i> n. gen. ist eine der ältesten ahermatypischen Rugosa (Subordo Cyathaxoniina) und umfasst neben der Typusart <i>Muenstraia franconica</i> n. sp. (Ludlovium, Elbersreuther Orthoceratitenkalk, Frankenwald) drei weitere Arten: <i>Muenstraia squarrosa</i> (Sutherland, 1965) (unteres Ludlovium, Henryhouse-Formation, Oklahoma), <i>Muenstraia</i> sp. (oberes Lochkovium, Yukon-Gebiet), <i>Muenstraia thuringica</i> n. sp. (Pragium, Thüringisches Schiefergebirge und Tafilalt). Die Gattung kann von dem isolierten, nur aus Xinjiang bekannten Protozaphrentis Yü, 1957 des hohen Mittelordoviz abgeleitet werden; wichtige Deszendenten im Ludlovian sind <i>Laccophyllum</i> Simpson, 1900 und Sutherlandinia Weyer, 1972. <br><br> Der Bauplan entspricht dem seit Schindewolf (1931) traditionellen Konzept der Gattung <i>Petraia</i> Münster, 1839, die aber nach Revision (Weyer 2000) ihrer wahren Typusart <i>Petraia decussata</i> Münster, 1839 aus dem oberen Famennium einer anderen Entwicklungsreihe angehört (Neaxoninae Hill, 1981, jetzt Petraiidae Koninck, 1872). Für die dadurch namenlos gewordene Familia "Petraiidae" (etwa sensu Hill 1981) werden die bisher als Synonym ruhenden Protozaphrentidae Ivanovskiy, 1959 verfügbar, denen noch <i>Duncanella</i> Nicholson, 1874 sowie die Sutherlandiniinae Weyer, 1972 und die Ditoecholasmatinae Sutherland, 1965 zugeordnet sind. <br><br> Muenstraia, a new genus of Rugosa (Anthozoa) from the Late Silurian and Early Devonian <br><br> The new taxon, one of the most ancient members of the ahermatypic suborder Cyathaxoniina, includes the type species <i>Muenstraia franconica</i> n. sp. (Ludlovian, Elbersreuth <i>Orthoceratites</i>-Limestone Formation. Upper Franconia, Germany) and three further species: <i>Muenstraia squarrosa</i> (Sutherland, 1965) (lower Ludlovian, Henryhouse Formation, Oklahoma, USA), <i>Muenstraia</i> sp. (upper Lochkovian, Yukon Territories, Canada). <i>Muenstraia thuringica</i> n. sp. (middle/upper Pragian, Tentaculitid Limestone Formation, Thuringian Mountains, Germany, and middle Pragian, Tafilalt, Morocco). The genus descends from the isolated Upper Middle Ordovician <i>Protozaphrentis</i> Yü, 1957, only known from Xinjiang in China; it is the ancestor of two new phylogenetic lines starting in the Ludlovian with <i>Laccophyllum</i> Simpson, 1900, and <i>Sutherlandinia</i> Weyer, 1972. <br><br> Morphology and diagnosis are identical with the (since Schindewolf 1931) traditional definition of the genus <i>Petraia</i> Münster, 1839, which represents according to a revision of its real and Upper Famennian type species <i>Petraia</i> <i>decussata</i> Münster, 1839 (Weyer 2000) another phylogenetic line (Neaxoninae Hill, 1981, now Petraiidae Koninck, 1872). Therefore, the valid name of the family "Petraiidae" (sensu Hill 1981) becomes Protozaphrentidae Ivanovskiy, 1959, which comprise also <i>Duncanella</i> Nicholson, 1874, and both the Sutherlandiniinae Weyer, 1972 and Ditoecholasmatinae Sutherland, 1965. <br><br> doi:<a href="http://dx.doi.org/10.1002/mmng.20010040106" target="_blank">10.1002/mmng.20010040106</a>

scholarly journals Undiscovered Biodiversity of the European Moss Flora: Neodicranella hamulosa (Aongstroemiaceae), a New Genus and Species from SW Portugal

Plants ◽  
2021 ◽  
Vol 10 (11) ◽  
pp. 2289
Author(s):  
Ronald D. Porley ◽  
Vladimir Fedosov ◽  
Vítězslav Plášek ◽  
Alina Fedorova
Keyword(s):  
New Genus ◽  
Novel Species ◽  
Molecular Data ◽  
New Taxon ◽  
New Genus And Species ◽  
The Family ◽  
Bioclimatic Zone ◽  
Morphological And Molecular Data ◽  
Sw Portugal

A new genus is described to accommodate Neodicranella hamulosa, a novel species resolved in the family Aongstroemiaceae, from the Monchiquense district in SW Portugal. Characterized by its small size, erect spreading to subsecund non-sheathing leaves, plane bistratose leaf margins, and rhizoidal gemmae with slightly protruberant cells, it differs from all other European Dicranellaceae in the uniquely patterned distal peristome segments with backward-pointing papillae resembling hooked barbs. The species appears to be endemic to the sub-Mediterranean bioclimatic zone, in wooded biomes where humidity remains relatively high throughout the year. Morphological and molecular data strongly support the singularity of this new taxon. The species is illustrated by photomicrographs and SEM, and its ecology and conservation are discussed.

A new thylacosmilid (Mammalia, Metatheria, Sparassodonta) from the Miocene of Patagonia, Argentina

Zootaxa ◽  
2010 ◽  
Vol 2552 (1) ◽  
pp. 55 ◽  
Author(s):  
ANALÍA M. FORASIEPI ◽  
ALFREDO A. CARLINI
Keyword(s):  
Middle Miocene ◽  
New Genus ◽  
Phylogenetic Analyses ◽  
Dental Morphology ◽  
New Taxon ◽  
Single Specimen ◽  
New Genus And Species ◽  
The West ◽  
Rio Negro ◽  
The Family

A new genus and species, Patagosmilus goini, of the family Thylacosmilidae (Mammalia, Metatheria, Sparassodonta) is described here. The new taxon is based on a single specimen collected from the west margin of the Río Chico, in Río Negro Province, Argentina, from the middle Miocene Colloncuran SALMA. Until now, two formally recognized species were encompassed in the family Thylacosmilidae: Thylacosmilus atrox, from the late Miocene-late Pliocene Huayquerian to Chapadmalalan SALMAof Argentina and probably Uruguay; and Anachlysictis gracilis, from the middle Miocene Laventan SALMA of Colombia. Recognition of the Patagonian taxon, Patagosmilus, provides new anatomical data, likely to be included in future phylogenetic analyses. The overall morphology of Patagosmilus suggests that it has a more generalized anatomy than Thylacosmilus. The dental morphology suggests the new Patagonian taxon was probably closer to Thylacosmilus than Anachlysictis. Saber-tooth thylacosmilids have several autapomorphic features in the skull that differentiate them from other sparassodonts, including the delayed replacement or non-replacement of the deciduous last premolar.

The centipede family Anopsobiidae new to North America, with the description of a new genus and species and notes on the Henicopidae of North America and the Anopsobiidae of the Northern Hemisphere (Chilopoda, Lithobiomorpha)

Zootaxa ◽  
2018 ◽  
Vol 4422 (2) ◽  
pp. 259 ◽  
Author(s):  
WILLIAM A. SHEAR
Keyword(s):  
North America ◽  
Northern Hemisphere ◽  
New Genus ◽  
New Taxon ◽  
New Genus And Species ◽  
Lava Tubes ◽  
The Family ◽  
North America North

Speleopsobius weaveri, n. gen., n. sp., is described from lava tubes in southern Idaho, USA. The new taxon, and species of the genera Buethobius Chamberlin, 1911 and its probable synonym Yobius Chamberlin, 1945, are members of the family Anopsobiidae, not previously reported from North America. All known species of Henicopidae and Anopsobiidae from North America north of México are listed and briefly noted, along with all known anopsobiids from the northern hemisphere. Anopsobiella dawidoffi Attems, 1938 (Vietnam) is likely not a member of the family Anopsobiidae. 

A new genus and species of cockroach (Blattida: Phyloblattidae) from the Permian/Triassic boundary beds of Tunguska Basin in eastern Siberia, Russia

Zootaxa ◽  
2010 ◽  
Vol 2353 (1) ◽  
pp. 55 ◽  
Author(s):  
PETER VRŠANSKÝ
Keyword(s):  
Volcanic Ash ◽  
New Genus ◽  
New Taxon ◽  
Eastern Siberia ◽  
New Genus And Species ◽  
Triassic Boundary ◽  
The Family ◽  
Tunguska Basin ◽  
Permian Triassic Boundary

Macroscopic fossils of terrestrial animals originating directly from deposits close to the Permian/Triassic boundary are very scarce. Volcanic ash sediments in Eastern Siberia were found to hold the cockroach Sobytie tungusicum gen. et sp. n. This new taxon belongs to the predominantly Palaeozoic family Phyloblattidae, but has many advanced features characteristic of the Mesozoic family Caloblattinidae, and also of the basal Liberiblattinidae. These connections provide an indication of the origin of the family Liberiblattinidae and thus all the Mesozoic cockroach lineages from such Phyloblattidae – precursors of the Caloblattinidae.

scholarly journals Dallasaurus turneri, a new primitive mosasauroid from the Middle Turonian of Texas and comments on the phylogeny of Mosasauridae (Squamata)

2005 ◽  
Vol 84 (3) ◽  
pp. 177-194 ◽  
Author(s):  
G.L. Bell ◽  
M.J. Polcyn
Keyword(s):  
Phylogenetic Analysis ◽  
New Genus ◽  
Body Plan ◽  
Current Concept ◽  
New Taxon ◽  
New Genus And Species ◽  
North Central ◽  
The Family ◽  
Central Texas ◽  
Continued Use

AbstractA new genus and species of primitive-limbed mosasauroid, Dallasaurus turneri, from the Middle Turonian (∼92 Ma) of north-central Texas, is described on the basis of two incomplete skeletons. The new taxon retains plesiomorphic characters such as facultatively terrestrial limbs (plesiopedal) but also exhibits certain characters shared with derived mosasaurs of the subfamily Mosasaurinae. In phylogenetic analysis, the new taxon reconstructs as the basal member of that clade. Other plesiopedal taxa previously included in the family Aigialosauridae reconstruct in basal positions within three different, major clades that include members that achieved the derived (hydropedal) fin-like limb condition. In addition, Opetiosaurus and Aigialosaurus reconstruct as successive outgroup taxa to all other mosasauroids, thereby demonstrating the paraphyletic nature of the current concept of Aigialosauridae. Interpretation of our phylogenetic analysis suggests that three different lineages of mosasauroids independently achieved the derived mosasaur body plan, including fully marine limb modifications culminating in the development of flippers or paddle-like appendages. The inclusion of plesiopedal forms within lineages of well-established hydropedal clades requires a reorganisation of our concepts of Mosasauridae to include these basal forms. In order to avoid continued use of the paraphyletic taxon ‘Aigialosauridae’ as currently defined, we recommend ‘Aigialosauridae’ as a formal taxonomic name be used only for inclusion of Aigialosaurus dalmaticus and potential members of its own independent lineage. This also avoids the implicit polyphyletic use of ‘Mosasauridae’. Additionally, the diagnosis of Mosasauridae should be modified to exclude limb characters that discriminate between more terrestrial versus more aquatic adaptations.

Ensigeropus, a new genus of the family Platyischnopidae (Amphipoda: Amphilochidea) from Northern Chile

Zootaxa ◽  
2017 ◽  
Vol 4311 (3) ◽  
pp. 399
Author(s):  
JORGE PÉREZ-SCHULTHEISS
Keyword(s):  
Posterior Margin ◽  
New Genus ◽  
New Taxon ◽  
Northern Chile ◽  
New Genus And Species ◽  
Upper Lip ◽  
The North ◽  
Mandibular Molar ◽  
The Family

A new genus and species of Platyischnopidae from the sandy intertidal of two localities in the north of Chile are described. Ensigeropus cachinalito n. gen., n. sp. is similar to Eudevenopus Thomas & Barnard, 1983 in most characters; however, it presents characters hitherto not reported in the family, as the lobate upper lip and the absence of a mandibular molar. The new taxon is easily recognized among all American Platyischnopidae by the presence of a conspicuous tooth on the posterior margin of the basis of pereopod 7, a character present also in species of the Australian genus Tomituka Barnard & Drummond, 1979. 

Two new cirroidean genera (Vetigastropoda, Archaeogastropoda) from the Emsian (Late Early Devonian) of Alaska with notes on the early phylogeny of Cirroidea

1998 ◽  
Vol 72 (2) ◽  
pp. 265-273 ◽  
Author(s):  
Jiří Frýda ◽  
Robert B. Blodgett
Keyword(s):  
New Species ◽  
Lower Devonian ◽  
New Genus ◽  
New Genus And Species ◽  
Early Devonian ◽  
West Central ◽  
The Family ◽  
First Time ◽  
Stratigraphic Range

Two new cirroidean gastropod genera, Alaskiella (family Porcelliidae) and Alaskacirrus (family Cirridae), from the Emsian (late Early Devonian) of west-central Alaska (Medfra B-4 quadrangle) are described. The shell of Alaskiella medfraensis new genus and species exhibits inclined heterostrophic coiling. This shell character is known among other members of the subclass Archaeogastropoda, but is recorded for the first time within members of the superfamily Cirroidea. Inclined heterostrophic coiling of the shell was probably developed independently in several different groups of the subclass Archaeogastropoda. The new genus Alaskacirrus, represented by Alaskacirrus bandeli new species, is the oldest and only known Paleozoic member of the family Cirridae. This suggests that the family Cirridae was separated from the family Porcelliidae since at least Early Devonian time and that it most probably developed from the subfamily Agnesiinae of the family Porcelliidae. Thus, the stratigraphic range of the family Cirridae is at least from Lower Devonian to Cretaceous, an interval of about 350 million years.

New genus and species of the family Niphargidae (Crustacea: Amphipoda: Senticaudata), Chaetoniphargus lubuskensis gen. nov., sp. nov. from Croatia

Zootaxa ◽  
2019 ◽  
Vol 4545 (2) ◽  
pp. 249
Author(s):  
GORDAN S. KARAMAN ◽  
BORIS SKET
Keyword(s):  
New Genus ◽  
New Taxon ◽  
New Genus And Species ◽  
The Family ◽  
Subterranean Waters

New genus and species of the family Niphargidae (Crustacea: Amphipoda: Senticaudata), Chaetoniphargus lubuskensis gen. nov., sp. nov. from the subterranean waters of cave Lubuška jama near Hajdučki Kukovi in the western part of Velebit Mt. in Croatia, is described and figured, and its relations to other genera and species of the family Niphargidae is discussed. The new taxon is a small niphargid, similar to Niphargobates. The list of all known genera of family Niphargidae is given and key to the genera of this family is presented. 

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