A reappraisal of the ornithischian dinosaur Amtosaurus magnus Kurzanov and Tumanova 1978, with comments on the status of A. archibaldi Averianov 2002

2004 ◽  
Vol 41 (3) ◽  
pp. 299-306 ◽  
Author(s):  
Jolyon C Parish ◽  
Paul M Barrett
Keyword(s):  
New Genus ◽  
Skull Roof ◽  
Holotype Specimen ◽  
Nomen Dubium ◽  
The Status ◽  
Valid Taxon

A fragmentary braincase from the Baynshirenskaya Svita (Cenomanian–Turonian) of Amtgay, Omnogov, People's Republic of Mongolia was described as the holotype specimen of the ankylosaurid dinosaur, Amtosaurus magnus Kurzanov and Tumanova 1978. However, the validity of this genus has been questioned by several authors. Recently, a second species, based on a fragmentary specimen consisting of a braincase and partial skull roof, was assigned to Amtosaurus as A. archibaldi Averianov 2002. Here we re-assess the status of Amtosaurus and of the referred species, A. archibaldi. We conclude that "Amtosaurus magnus" is a nomen dubium that should be regarded as Ornithischia indeterminate. However, "A." archibaldi is a valid taxon, characterized by an autapomorphic feature of the skull roof, and we refer this species to the new genus Bissektipelta.

Review of the status of the genus Phelene stat. resurr. (Orthoptera: Tetrigidae: Lophotettiginae) and description of a new species

Zootaxa ◽  
2021 ◽  
Vol 4980 (2) ◽  
pp. 355-365
Author(s):  
OSCAR J. CADENA-CASTAÑEDA ◽  
CARLOS JULIO ARANGO DÍAZ ◽  
DANIELA SANTOS MARTINS SILVA ◽  
OSCAR BUITRAGO ◽  
ALEXANDER GARCÍA GARCÍA ◽  
...  
Keyword(s):  
New Species ◽  
New Taxa ◽  
Additional Species ◽  
Nomen Dubium ◽  
The Status ◽  
A New Species

The status of the genus Phelene stat. resurr., previously synonymized under Chiriquia is revalidated. The genus is redescribed and Phelene turgida stat. rev. a lectotype and paralectotypes are designated for this species. Tetrix laticeps is proposed as nomen dubium and its described a new additional species Phelene maroon n. sp. The diagnosis of the subfamily is adjusted with the characters of the new taxa included and an updated key of genera and species is provided. 

Phylogenetic relationships and evolution of reproductive modes within flattened syllids (Annelida : Syllidae) with the description of a new genus and six new species

2018 ◽  
Vol 32 (1) ◽  
pp. 224 ◽  
Author(s):  
Patricia Álvarez-Campos ◽  
Sergio Taboada ◽  
Guillermo San Martín ◽  
Carlos Leiva ◽  
Ana Riesgo
Keyword(s):  
New Species ◽  
Phylogenetic Relationships ◽  
Reproductive Strategy ◽  
New Genus ◽  
Entire Group ◽  
Reproductive Modes ◽  
Taxonomic Descriptions ◽  
The Status ◽  
New Material ◽  
Phylogenetic Hypotheses

Syllid annelids from the so-called ‘ribbon clade’ are flattened, ribbon-shaped worms of the genera Parahaplosyllis Hartmann-Schröder, 1990, Eurysyllis Ehlers, 1864, Xenosyllis Marion & Bobretzky, 1875, Trypanosyllis Claparède, 1864, Ramisyllis Glasby, Schroeder & Aguado, 2012, Trypanobia Imajima & Hartman, 1964, Plakosyllis Hartmann-Schröder, 1956, Pseudosyllis Grube, 1863 and Trypanedenta Imajima & Hartman, 1964. Some species possess a remarkable reproductive strategy using multiple stolons that has been recently suggested to be ancestral to the group. Here, to evaluate the evolution of reproductive modes in the group, we assess, for the first time, the phylogenetic relationships within the ribbon clade and related genera. We collected new material of Trypanobia and Trypanosyllis from Japan, Spain, Philippines and Indonesia and sequenced it for the nuclear markers 18S rRNA and the mitochondrial markers 16S rRNA and cytochrome c oxidase I for phylogenetic inference and also performed ancestral character reconstruction for the reproductive strategy in the entire group. Formal taxonomic descriptions of a new genus and six new species are provided. The new genus, Trypanospina, gen. nov., is characterised by the spines that cover its surface. Most genera within the ‘ribbon clade’ are monophyletic and the relationships appeared well supported in most cases. However, our phylogenetic hypotheses are not conclusive in regard to the relationships of the genera Trypanedenta and Trypanobia, nor to the status of those to genera as distinctive, since they seem to be paraphyletic and they appear in low-supported clades. In contrast, our results shed light on the evolution of the reproductive modes within the group, showing that scissiparity (development of a single stolon each time) is the ancestral character for the entire group and gemmiparity (development of more than one stolon at the same time) then appeared twice in two independent clades.

Eggersanthus Sittichaya & Smith gen. nov., a new Oriental ambrosia beetle genus (Coleoptera: Curculionidae: Scolytinae: Xyleborini)

Zootaxa ◽  
2020 ◽  
Vol 4779 (2) ◽  
pp. 282-288
Author(s):  
WISUT SITTICHAYA ◽  
SARAH M. SMITH
Keyword(s):  
New Genus ◽  
Single Species ◽  
Ambrosia Beetle ◽  
The Status

A new genus, Eggersanthus Sittichaya & Smith gen. nov is described from a single species, Webbia sublaevis Eggers, 1927. The taxonomic characters of Eggersanthus and the morphologically similar genus Arixyleborus are analyzed and compared, and the status of the Webbia genus group is discussed. 

Kochiella Poulsen, 1927, and Hadrocephalites new genus (Trilobita: Ptychopariida) from the early Middle Cambrian of western North America

2002 ◽  
Vol 76 (1) ◽  
pp. 76-94 ◽  
Author(s):  
Frederick A. Sundberg ◽  
Linda B. McCollum
Keyword(s):  
New Species ◽  
North America ◽  
New Genus ◽  
Western North America ◽  
Type Specimens ◽  
Middle Cambrian ◽  
Informal Group ◽  
Nomen Dubium

Kochaspids are an informal group of ptychopariid trilobites that were both abundant and widespread in the early Middle Cambrian of North America. Based on the reassociation of pygidia and cranidia of some kochaspids, Kochiella Poulsen, 1927, is redefined and Hadrocephalites n. gen. is proposed. Hadrocephalites includes taxa previously assigned by Rasetti and Palmer to Schistometopus Resser, 1938a. Schistometopus is considered nomen dubium. Representatives of Kochiella and Hadrocephalites from the Pioche Shale and Carrara Formation of Nevada are described, including the new species Kochiella rasettii, K. brevaspis, Hadrocephalites lyndonensis, and H. rhytidodes. Other kochaspids previously assigned to Kochaspis Resser, 1935; Eiffelaspis Chang, 1963; Schistometopus; and Kochiella are discussed and some are reassigned. The type specimens of Kochiella augusta (Walcott, 1886); K. crito (Walcott, 1917b); K. chares (Walcott, 1917a); K. mansfieldi Resser, 1939; K. arenosa Resser, 1939; Hadrocephalites carina (Walcott, 1917b), and H. cecinna (Walcott, 1917b) are re-illustrated.

Revision of world Ceroptresini (Hymenoptera: Cynipidae) with the description of a new genus and five new species

Zootaxa ◽  
2019 ◽  
Vol 4685 (1) ◽  
pp. 1-67 ◽  
Author(s):  
IRENE LOBATO-VILA ◽  
JULI PUJADE-VILLAR
Keyword(s):  
New Species ◽  
Type Species ◽  
Morphological Traits ◽  
New Genus ◽  
Taxonomic Revision ◽  
Valid Species ◽  
Distribution Data ◽  
The Status ◽  
The Usa ◽  
First Time

A taxonomic revision of the tribe Ceroptresini (Hymenoptera: Cynipidae) is conducted for the first time. Prior to this study, the total number of valid species of Ceroptres, the only genus within Ceroptresini to date, was 23. As a result of this revision, 15 Ceroptres species are retained as valid and one species, Amblynotus ensiger Walsh, 1864, is desynonymized from Ceroptres petiolicola (Osten-Sacken, 1861), being considered here as a valid Ceroptres species: C. ensiger (Walsh, 1864) status verified and comb. nov. An additional five new species are described from Mexico: Ceroptres junquerasi Lobato-Vila & Pujade-Villar sp. nov.; C. lenis Lobato-Vila & Pujade-Villar sp. nov.; C. mexicanus Lobato-Vila & Pujade-Villar sp. nov.; C. nigricrus Lobato-Vila & Pujade-Villar sp. nov.; C. quadratifacies Lobato-Vila & Pujade-Villar sp. nov., increasing the total number of valid Ceroptres species to 21. Ceroptres masudai Abe, 1997 is synonymized with C. kovalevi Belizin, 1973. Ceroptres niger Fullaway, 1911 is transferred to Andricus (Andricus confusus Lobato-Vila & Pujade-Villar comb. nov. and nom. nov.). Five species (Amblynotus inermis Walsh, 1864; Cynips quercusarbos Fitch, 1859; Cynips querficus Fitch, 1859; Cynips quercuspisum Fitch, 1859; and Cynips quercustuber Fitch, 1859) are not considered as valid Ceroptres. The status of Ceroptres quereicola (Shinji, 1938), previously classified as an unplaced species, is commented on. In addition, a Nearctic species from the USA, Ceroptres politus Ashmead, 1896, is here proposed as the type species of a new genus within Ceroptresini: Buffingtonella Lobato-Vila & Pujade-Villar gen. nov. Redescriptions, biological and distribution data, illustrations and keys to genera and species within Ceroptresini are provided. The diagnostic morphological traits of Ceroptresini, Ceroptres and the new genus are discussed. 

A new genus of ichthyosaur from the Late Triassic Pardonet Formation of British Columbia: bridging the Triassic Jurassic gap

2001 ◽  
Vol 38 (6) ◽  
pp. 983-1002 ◽  
Author(s):  
Elizabeth L Nicholls ◽  
Makoto Manabe
Keyword(s):  
British Columbia ◽  
Type Species ◽  
New Genus ◽  
Late Triassic ◽  
Unique Combination ◽  
Type Specimens ◽  
Nomen Dubium ◽  
The Family ◽  
Large Diamond

Both the genus Shastasaurus and the family Shastasauridae have long been hard to define due to the fragmentary nature of the type specimens. Consequently, recent interpretations of the genus have been based almost entirely on Shastasaurus neoscapularis from the Late Triassic Pardonet Formation of British Columbia. Two new specimens of this taxon, from Pink Mountain, British Columbia, demonstrate that it does not belong in the genus Shastasaurus. This paper describes the new specimens, and refers the species to Metashastasaurus gen nov. Post-cranially, the skeleton of Metashastasaurus resembles that of shastasaurids, differing primarily only in the shape of the scapula and fibula. However, the skull has a unique combination of characters, including large diamond-shaped frontals that enter the supratemporal fenestrae, and very narrow posterior extensions of the nasals, which contact the postfrontals. It also differs from the skull of Shastasaurus in the presence of both a parietal ridge and postparietal shelf. This is a combination of derived characters previously known only in Jurassic forms. The front limb has four proximal carpals and four digits, indicating that previous reconstructions were based on incomplete material. Shastasaurus pacificus Merriam 1895, the type species of the genus Shastasaurus, must be considered a nomen dubium, making the genus Shastasaurus invalid. Until this problem is clarified, the use of the generic name Shastasaurus should be restricted to Merriam's type specimens, of which only Shastasaurus alexandrae and Shastasaurus osmonti are based on adequate material.

Myrmelibia, a new genus of Myrmecophile form Australia, with a generic review of Australian Osoriinae (Coleoptera : Staphylinidae)

1990 ◽  
Vol 4 (1) ◽  
pp. 81 ◽  
Author(s):  
AF Newton
Keyword(s):  
New Genus ◽  
New Records ◽  
Indian Ocean Region ◽  
Free Living ◽  
Eastern Australia ◽  
Senior Synonym ◽  
Ocean Region ◽  
The Status ◽  
New Synonymy ◽  
First Time

The status of two supposedly myrmecophilous Australian 'Glyptoma' species described by A. M. Lea is reviewed, and lectotypes designated for both species. A new genus, Myrmelibia, is proposed for Glyptoma kingi Lea of south-eastern Australia. This genus is not related to Glyptoma or Thoracophorus, but belongs near the genera Eulibia, Heterotrochinus and Holotrochidius of the Oriental-Indian Ocean region. New records confirm that M. kingi is one of the few truly myrmecophilous osoriines, probably host-specific with Zridomyrmex nitidus Mayr (Hymenoptera : Formicidae : Dolichoderinae). Glyptoma myrmecophilum Lea is transferred to the genus Thoracophorus as a senior synonym of T. quadricostatus Bernhauer (new synonymy); present evidence suggests it is free-living and subcortical, not myrmecophilous. A key to all 16 genera of Osoriinae (sensu Blackwelder) known to occur in Australia is presented, along with the names, distribution and microhabitat of Australian species included in each genus. Four genera (Allotrochus, Arpagonus, Espeson, and Saegerius) are reported from Australia for the first time, each based on undescribed species from northern Queensland.

A new basal iguanodont (Dinosauria: Ornithischia) from the Wealden (Lower Cretaceous) of England

Zootaxa ◽  
2010 ◽  
Vol 2569 (1) ◽  
pp. 1 ◽  
Author(s):  
ANDREW T. MCDONALD ◽  
PAUL M. BARRETT ◽  
SANDRA D. CHAPMAN
Keyword(s):  
Lateral Surface ◽  
Lower Cretaceous ◽  
New Genus ◽  
Ventral Surface ◽  
Unique Combination ◽  
New Genus And Species ◽  
Additional Material ◽  
Nomen Dubium

A nearly complete right dentary originally noted by Mantell in 1848 is redescribed. The specimen, NHMUK 28660, was discovered in a quarry near Cuckfield, West Sussex, from the same formation as the original teeth of Iguanodon anglicus. Fresh examination reveals that NHMUK 28660 exhibits a single autapomorphy (a row of foramina extending from the ventral surface of the symphysis onto the lateral surface of the dentary) and a unique combination of characters that distinguish it from all other iguanodontian dentaries. In light of this and because I. anglicus is regarded as a nomen dubium to which additional material cannot be unambiguously referred, NHMUK 28660 is made the holotype of the new genus and species Kukufeldia tilgatensis.

Remarks on Inachoididae Dana, 1851, with the description of a new genus and the resurrection of Stenorhynchinae Dana, 1851, and recognition of the inachid subfamily Podochelinae Neumann, 1878 (Crustacea, Decapoda, Brachyura, Majoidea)

Zootaxa ◽  
2012 ◽  
Vol 3416 (1) ◽  
pp. 22 ◽  
Author(s):  
DANIÈLE GUINOT
Keyword(s):  
Type Species ◽  
New Genus ◽  
Eastern Pacific ◽  
The Status

A new inachoidid genus Paulita n. gen. is established for Paradasygyius tuberculatus (Lemos de Castro, 1949), from thewestern Atlantic. Paulita tuberculata (Lemos de Castro, 1949) n. comb. differs from Paradasygyius depressus (Bell,1835), from the eastern Pacific, the type species and only remaining species of Paradasygyius Garth, 1958, by a numberof characters mainly related to the carapace, thoracic sternum, abdomen, and first gonopod. Paulita n. gen. shares the di-agnostic characters of Inachoididae Dana, 1851, in particular the latero-external parts of pleurites 5–8 that extend beyondeach side of the carapace and are calcified and ornamented like the carapace, resulting in the insertion of the carapace intoa setting gutter. Stenorhynchus Lamarck, 1818, is transferred from Inachidae to Inachoididae, and the subfamily Steno-rhynchinae Dana, 1851, is resurrected. Inachoididae now consists of at least two subfamilies: Inachoidinae Dana, 1851,and Stenorhynchinae, whereas the status of Salaciinae H. Milne Edwards & Lucas, 1842, remains uncertain. The status ofseveral other American genera traditionally included in Inachidae is discussed, leading to the recognition of the followingsubfamilies besides the Inachinae emend.: Podochelinae Neumann, 1878, which is here resurrected, Anomalopodinae Stimpson, 1871, and perhaps also Eucinetopinae Števčić, 2005.

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