Taxonomy and Evolution of Visean–Roadian (Late Mississippian–Guadalupian) Lasiodiscidae

2020 ◽  
Vol 50 (2) ◽  
pp. 141-173
Author(s):  
Elena I. Kulagina ◽  
Tatiana V. Filimonova
Keyword(s):  
Species Composition ◽  
East European Platform ◽  
New Genus ◽  
Type Specimens ◽  
East European ◽  
Phylogenetic Reconstructions ◽  
The Family ◽  
Visean Stage

ABSTRACT The study of the test morphology of type specimens and newly collected foraminiferal material of the family Lasiodiscidae Reitlinger, 1956, from the Carboniferous (Visean Stage, Mississippian Subsystem) to Permian (Roadian Stage, Guadalupian Series) beds of Russia (East European Platform and Urals), Turkey, and Tajikistan (Darvaz) allowed a revision of the species composition of the genera Howchinia, Monotaxinoides, Eolasiodiscus, Turrispiroides, and Mesolasiodiscus. A new genus, Postmonotaxinoides, is described. The species Monotaxinoides transitorius, M. subplanus, M. gracilis, Eolasiodiscus donbassicus, E. galinae, Mesolasiodiscus tenuis, M. nigrans, Postmonotaxinoides horridus, P. costiferus, and P. grandis are redescribed based on new data of their test morphology. Their taxonomy is revised and new phylogenetic reconstructions for the species are proposed.

Early Paleozoic Hyolitha from North America: reexamination of Walcott's and Resser's type specimens

1988 ◽  
Vol 62 (2) ◽  
pp. 218-233 ◽  
Author(s):  
John Mark Malinky
Keyword(s):  
North America ◽  
Lower Cambrian ◽  
Type Species ◽  
New Genus ◽  
Early Paleozoic ◽  
Type Specimens ◽  
Middle Cambrian ◽  
Upper Cambrian ◽  
New Family ◽  
The Family

Concepts of the family Hyolithidae Nicholson fide Fisher and the genera Hyolithes Eichwald and Orthotheca Novak have been expanded through time to encompass a variety of morphologically dissimilar shells. The Hyolithidae is here considered to include only those hyolithid species which have a rounded (convex) dorsum; slopes on the dorsum are inflated, and the venter may be flat or slightly inflated. Hyolithes encompasses species which possess a low dorsum and a prominent longitudinal sulcus along each edge of the dorsum; the ligula is short and the apertural rim is flared. The emended concept of Orthotheca includes only those species of orthothecid hyoliths which have a subtriangular transverse outline and longitudinal lirae covering the shell on both dorsum and venter.Eighteen species of Hyolithes and one species of Orthotheca from the Appalachian region and Western Interior were reexamined in light of more modern taxonomic concepts and standards of quality for type material. Reexamination of type specimens of H. similis Walcott from the Lower Cambrian of Newfoundland, H. whitei Resser from the Lower Cambrian of Nevada, H. billingsi Walcott from the Lower Cambrian of Nevada, H. gallatinensis Resser from the Upper Cambrian of Wyoming, and H. partitus Resser from the Middle Cambrian of Alabama indicates that none of these species represents Hyolithes. Hyolithes similis is here included under the new genus Similotheca, in the new family Similothecidae. Hyolithes whitei is designated as the type species of the new genus Nevadotheca, to which H. billingsi may also belong. Hyolithes gallatinensis is referred to Burithes Missarzhevsky with question, and H. partitus may represent Joachimilites Marek. The type or types of H. attenuatus Walcott, H. cecrops Walcott, H. comptus Howell, H. cowanensis Resser, H. curticei Resser, H. idahoensis Resser, H. prolixus Resser, H. resseri Howell, H. shaleri Walcott, H. terranovicus Walcott, and H. wanneri Resser and Howell lack shells and/or other taxonomically important features such as a complete aperture, rendering the diagnoses of these species incomplete. Their names should only be used for the type specimens until better preserved topotypes become available for study. Morphology of the types of H.? corrugatus Walcott and “Orthotheca” sola Resser does not support placement in the Hyolitha; the affinities of these species are uncertain.

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.

scholarly journals A Review of Necrotauliids from the Triassic/Jurassic of England (Trichoptera: Necrotauliidae)

2018 ◽  
Vol 2018 ◽  
pp. 1-12 ◽  
Author(s):  
Richard S. Kelly ◽  
Andrew J. Ross ◽  
Robert A. Coram
Keyword(s):  
New Species ◽  
Type Species ◽  
New Genus ◽  
Type Locality ◽  
Late Triassic ◽  
Type Specimens ◽  
The Family ◽  
The Uk ◽  
A New Species ◽  
Paraphyletic Assemblage

Species previously attributed to Necrotauliidae are revised from the Late Triassic and Early Jurassic of England based on examination of type specimens and non-type material. The necrotauliids have been considered as a basal family of caddisflies (Trichoptera) or as a paraphyletic assemblage of stem-amphiesmenopterans. Herein a new genus, Austaulius, is erected which includes all Lilstock Formation∖Lower Lias material from England; the previously described species are synonymized with A. furcatus and a new species, A. haustrum, is described from the Dorset Coast, the holotype of which preserves synapomorphic traits of the Trichoptera not previously described suggesting that the family is trichopteran. The type genus remains Necrotaulius and type species N. parvulus (Geinitz, 1884) from the type locality of Dobbertin, Germany. One species of Necrotaulius is represented in the UK, N. parvulus, which is found in the Upper Lias.

Urolabida graziae, new urostylidid species from the Philippines with comments on the current taxonomy and systematics of the family (Hemiptera: Heteroptera: Urostylididae)

Zootaxa ◽  
2021 ◽  
Vol 4958 (1) ◽  
pp. 702-712
Author(s):  
MARCOS ROCA-CUSACHS ◽  
MERCEDES PARIS ◽  
ALMA MOHAGAN ◽  
SUNGHOON JUNG
Keyword(s):  
New Species ◽  
Type Species ◽  
New Genus ◽  
The Philippines ◽  
Type Specimens ◽  
External Appearance ◽  
The Family ◽  
A New Species ◽  
Male Genital

A new species of Urostylididae from the Philippine islands (Mindanao) is herein described. This new species, similar to Urolabida bipunctata Stål, 1871, differs from the latter in the shape of the external male genitalia. Urolabida bipunctata and the new species, Urolabida graziae Roca-Cusachs, sp. nov., are extremely similar in external appearance, and fit into the (incomplete) description of genus Urolabida Westwood, 1837. The examination and comparison with the type specimens of other Urostylididae species, especially the male genital capsule, clearly separates this two species from Urolabida tenera Westwood, 1837, the type species of the genus Urolabida, however the taxonomy of this group is not resolved and needs a deep revision, therefore we refrain from description of a new genus-group taxon here. Additionally, images of the type specimens of Urolabida tenera, Urostylis histrionica Westwood, 1837, and Urostylis punctigera Westwood, 1837, are provided and discussion on the current systematics and classification of the family, and particularly of genus Urolabida are also given. 

Pandea, a new replacement name for Udaria D.K. Singh, S. Majumdar & D. Singh (Marchantiophyta, Lophocoleaceae)

Phytotaxa ◽  
2021 ◽  
Vol 482 (3) ◽  
pp. 291-292
Author(s):  
UMAKANT BHOOPATI DESHMUKH
Keyword(s):  
Type Species ◽  
New Genus ◽  
Single Species ◽  
Himachal Pradesh ◽  
New Combination ◽  
Eastern Himalaya ◽  
Arunachal Pradesh ◽  
Type Specimens ◽  
Fossil Fungi ◽  
The Family

The generic name Udaria Gupta (1996:103) was established by Gupta (1996) with two fossil fungi species Udaria singhii Gupta (1996:103) and U. saxenae Gupta (1996:104) from Lower Tertiary sediments of Himachal Pradesh, India. Later on, Singh et al. (2018) described the new genus of liverworts, Udaria Singh, Majumdar & Singh (2018: 1537)   with the single species Udaria lamellicaulis Singh, Majumdar & Singh (2018: 1537) to the family Lophocoleaceae Vanden Berghen (1956: 208) from Arunachal Pradesh and Sikkim in Eastern Himalaya, India. After a thorough scrutiny of literature and type specimens, it was found that the liverwort genus name, Udaria Singh, Majumdar & Singh (2018: 1537) is illegitimate as it is a later homonym of the fossil fungi genus Udaria Gupta (1996:103). Therefore, a new replacement name Pandea U. B. Deshmukh is proposed with a new combination for the type species here in accordance with article 53.1 of Shenzhen Code (Turland et al. 2018).

Australian genera of the family psyllidae (Hemiptera: Homoptera)

1955 ◽  
Vol 3 (2) ◽  
pp. 227 ◽  
Author(s):  
LD Tuthill ◽  
KL Taylor
Keyword(s):  
New Genus ◽  
New Genera ◽  
Type Specimens ◽  
The Family ◽  
To Receive ◽  
World Fauna

An examination has been made of Froggatt's type specimens of Psyllidae, and an attempt made to bring his classification of the family into line with world fauna. All other genera known to occur in Australia are included in this revision. Species assigned to Rhinocola and Aphalara by Froggatt are now placed in Creiis Scott, Eucalyptolyma Froggatt, Cardiaspina Crawford, Ctenurytaina Ferris & Klyver, Spondyliaspis Signoret, and two new genera. Species placed in the genus Psylla Geoffroy by Froggatt are left undisturbed for the present, except that a new genus is erected for one species. Two new genera have been erected to receive the bulk of the species placed in Trioza Forster by Froggatt.

Examination of type specimens for the genera Odontella and Zygoceros (Bacillariophyceae) with evidence for the new family Odontellaceae and a description of three new genera

Phytotaxa ◽  
2018 ◽  
Vol 382 (1) ◽  
pp. 1 ◽  
Author(s):  
PAT A. SIMS ◽  
DAVID M. WILLIAMS ◽  
MATT ASHWORTH
Keyword(s):  
Electron Microscopy ◽  
New Genus ◽  
Molecular Evidence ◽  
New Genera ◽  
Type Specimens ◽  
New Family ◽  
Present Information ◽  
The Family ◽  
Valve Structure ◽  
Scanning Electron

Using scanning electron microscopy, Ross and Sims (1971) clarified relationships in the Biddulphiaceae and Eupodiscaceae. They identified characters that could be used to separate biddulphioid genera finding that there were two types of valve structure, poroid and loculate (alveolate), and two types of structure at the summit of the valve elevations, an ocellus and a pseudocellus; the ocellus characterised the Eupodiscaceae, its absence the Biddulphiaceae. The former is thus monophyletic. Subsequently, Ashworth et al. (2013) re-investigated the relationships of the Biddulphiaceae and Eupodiscaceae primarily using molecular evidence and showed that while the monophyly of Eupodiscaceae was supported, the species they examined currently placed in Odontella inhabit a non-monophyletic array of clades having relationships with species in genera other than Odontella. They described the new genus Trieres to include three species previously placed in Odontella, Zygoceros, Biddulphia or Denticella and they drew attention to the family Parodontellaceae as a possible synonymous collection of species. This paper presents further evidence on the relationships amongst the Eupodiscoids, particularly the fossil representatives of members of the family Parodontellaceae, and the type specimens of both Odontella and Zygoceros. We present information relevant to a new family Odontellaceae and three new genera: Pseudictyota, Hobaniella and Ralfsiella.

A new family and two new genera of calcaxonian octocoral, including a redescription of Pleurogorgia militaris (Cnidaria:Octocorallia:Chrysogorgiidae) and its placement in a new genus

2021 ◽  
Author(s):  
Stephen D. Cairns ◽  
Ralf T. S. Cordeiro ◽  
Yu Xu ◽  
Zifeng Zhan ◽  
Philip Alderslade
Keyword(s):  
Deep Sea ◽  
Type Species ◽  
New Genus ◽  
Sensu Stricto ◽  
Type Material ◽  
New Genera ◽  
New Family ◽  
Phylogenetic Reconstructions ◽  
The Family ◽  
Molecular Phylogenetic

Golden corals (chrysogorgiids sensu lato) are conspicuous components in deep-sea gorgonian assemblages. Although common, their taxonomy still conflicts with evolutionary histories, mostly due to low character availability and poor taxonomic knowledge. This is the case for the genus Pleurogorgia, which has been frequently reported in ROV surveys, dominating hard-bottoms throughout the Indo-Pacific. Herein, molecular phylogenetic reconstructions based on mitochondrial and nuclear datasets, and examination of new and old type material led us to suggest new systematic arrangements for some of the genera. We create a new genus, Ramuligorgia, to accommodate Pleurogorgia militaris, redescribing it as Ramuligorgia militaris comb. nov. within the family Chrysogorgiidae sensu stricto. Additionally, we describe Aurogorgia tasmaniensis gen. nov. et sp. nov., including it and the type species, Pleurogorgia plana, within Pleurogorgiidae fam. nov.

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