The Trilobite Genus Holasaphus Matthew, 1895 in the Middle Cambrian Rocks of Nova Scotia and Eastern Turkey

1972 ◽  
Vol 9 (3) ◽  
pp. 266-279 ◽  
Author(s):  
W. T. Dean
Keyword(s):  
New Species ◽  
Nova Scotia ◽  
Type Species ◽  
Middle Portion ◽  
Middle Cambrian ◽  
Upper Cambrian ◽  
Eastern Turkey ◽  
New Material ◽  
Additional Support ◽  
A New Species

Holasaphus centropyge Matthew, 1895, the type species of the genus, is redescribed using known and new material from the Middle Cambrian of Nova Scotia. A new species, Holasaphus mesopotamicus, described from the Derik–Mardin district of southeastern Turkey, marks the only other known occurrence of the genus. The presence there of Holasaphus and the agnostid Peronopsis in the middle portion of the Sosink Formation suggests that the latter may be no younger than Middle Cambrian and lends additional support to evidence for the probable regional absence of Upper Cambrian strata.

New data on gastropod genus Hirsuticyclus (Caenogastropoda, Cyclophoridae) from mid-Cretaceous Kachin amber

2021 ◽  
pp. SP521-2021-127
Author(s):  
Tingting Yu
Keyword(s):  
New Species ◽  
Type Species ◽  
Morphological Characteristics ◽  
Morphological Diversity ◽  
First Record ◽  
Land Snail ◽  
Generic Diagnosis ◽  
Burmese Amber ◽  
New Material ◽  
A New Species

AbstractThe genus Hirsuticyclus Neubauer, Xing & Jochum, 2019 was the first record of an exceptionally preserved land snail with dense periostracal hairs from mid-Cretaceous Kachin (Burmese) amber. Here we document four newly-discovered shells from Kachin amber, one belonging to the type species Hirsuticyclus electrum Neubauer, Xing & Jochum, 2019 and the remaining three shells belonging to a new species, Hirsuticyclus canaliculatus sp. nov. Well-preserved morphological characteristics of these two species could be clearly demonstrated under light microscopy combined with modern micro-CT scans with computer 3D reconstructions. Our new material of the type species amends the generic diagnosis based on a better-preserved shell including the peristome and operculum. The new species shows distinctive shell characteristics such as numerous spiral keels and a flaring, folded peristome interrupted by two canals. These excellently preserved fossils contribute to our understanding of the morphological diversity and evolution of these ancient members of cyclophoroids.

New data on recently described Chilean trophonines (Gastropoda: Muricidae), description of a new species and notes of their occurrence at a cold seep site

Zootaxa ◽  
2006 ◽  
Vol 1222 (1) ◽  
pp. 53 ◽  
Author(s):  
ROLAND HOUART ◽  
JAVIER SELLANES
Keyword(s):  
New Species ◽  
Type Species ◽  
Cold Seep ◽  
Central Chile ◽  
Methane Seepage ◽  
South Central ◽  
New Material ◽  
A New Species ◽  
Seep Site

Additional specimens of three newly described Chilean species of Trophon s.l. Monfort, 1810 have been dredged recently off south-central Chile, and we here list the new data and illustrate the radulae. Another species, Trophon wilhelmensis Ramírez-Bohme, 1981, is combined with Coronium Simone, 1996. Pagodula concepcionensis n. sp. is described and another species remains unidentified. A type species is designated for Pagodula Monterosato, 1884. Part of the new material comes from an area of methane seepage located northwest of the Bay of Concepción, from 726 to 930 m depth. Many drilled valves of two species of chemosymbiotic clams (Calyptogena gallardoi Sellanes & Krylova, 2005 and Thyasira methanophila Oliver & Sellanes, 2005) were also obtained at the seep site. We assume that this holes document attacks of this trophonines to the clams.

scholarly journals New records of Burgess Shale-type taxa from the middle Cambrian of Utah

2015 ◽  
Vol 89 (3) ◽  
pp. 411-423 ◽  
Author(s):  
Simon Conway Morris ◽  
Paul A. Selden ◽  
Glade Gunther ◽  
Paul G. Jamison ◽  
Richard A. Robison
Keyword(s):  
New Species ◽  
North America ◽  
Northwest Territories ◽  
Type Species ◽  
New Records ◽  
Western North America ◽  
Burgess Shale ◽  
Middle Cambrian ◽  
Stem Group ◽  
A New Species

AbstractCambrian strata of the Laurentian craton contain numerous examples of Burgess Shale–type faunas. Although displaying a more or less concentric distribution around the cratonal margin, most faunal occurrences are in present-day western North America, extending from the Northwest Territories to California. Nevertheless, the soft-bodied and lightly skeletalized fossils in most of these Lagerstätten are highly sporadic. Here, we extend knowledge of such Middle Cambrian occurrences in Utah with reports of four taxa. An arthropod from the Marjum Formation, Dytikosicula desmatae gen. et sp. nov., is a putative megacheiran. It is most similar to Dicranocaris guntherorum, best known from the younger Wheeler Formation, but differs primarily in the arrangement of pleurae and overall size. Along with a specimen of ?Yohoia sp, a new species of Yohoia, Y. utahana sp. nov., is described. It differs from the type and only known species, Y. tenuis, principally in its larger size and shorter exopods; it is the first description of this genus from outside the Burgess Shale. A new species of a stem-group lophotrochozoan from the Spence Shale, Wiwaxia herka sp. nov., possesses a palisade of dorso-lateral spines that are more robust and numerous than the type species of Wiwaxia, W. corrugata. Another notable taxon is Eldonia ludwigi from the Marjum Formation, which is interpreted as a primitive ambulacrarian (assigned to the cambroernids) and a new specimen of the ?cnidarian Cambrorhytium from the Wheeler Shale is illustrated.

Middle Cambrian arthropods from Utah

2008 ◽  
Vol 82 (2) ◽  
pp. 238-254 ◽  
Author(s):  
Derek E. G. Briggs ◽  
Bruce S. Lieberman ◽  
Jonathan R. Hendricks ◽  
Susan L. Halgedahl ◽  
Richard D. Jarrard
Keyword(s):  
New Species ◽  
New Genera ◽  
Burgess Shale ◽  
Separate Species ◽  
Middle Cambrian ◽  
Stem Group ◽  
New Material ◽  
A New Species

The Middle Cambrian Spence Shale Member (Langston Formation) and Wheeler and Marjum Formations of Utah are known to contain a diverse soft-bodied fauna, but important new paleontological material continues to be uncovered from these strata. New specimens of anomalocaridids include the largest and smallest near complete examples yet reported from Utah. New material of stem group arthropods includes two new genera and species of arachnomorphs: Nettapezoura basilika and Dicranocaris guntherorum. Other new arachnomorph material includes a new species of Leanchoilia comparable to L. protogonia Simonetta, 1970; Leanchoilia superlata? Walcott, 1912; Sidneyia Walcott, 1911a; and Mollisonia symmetrica Walcott, 1912. L. protogonia from the Burgess Shale is confirmed as a separate species and is not a composite fossil. The first example of the trilobite Elrathia kingii preserving traces of the appendages is described. In addition, new material of the bivalved arthropods Canadaspis Novozhilov in Orlov, 1960; Branchiocaris Briggs, 1976; Waptia Walcott, 1912; and Isoxys Walcott, 1890 is described.

New remains and species of the ‘condylarth’ genus Escribania (Mammalia: Didolodontidae) from the Palaeocene of Patagonia, Argentina

2007 ◽  
Vol 98 (02) ◽  
pp. 127-138 ◽  
Author(s):  
Javier N. Gelfo ◽  
Edgardo Ortiz-Jaureguizar ◽  
Guillermo W. Rougier
Keyword(s):  
New Species ◽  
Type Species ◽  
Third Molar ◽  
South American ◽  
Early Paleocene ◽  
New Material ◽  
Homologous Structure ◽  
Bona Fide ◽  
Early Radiation ◽  
A New Species

ABSTRACTThe Punta Peligro fauna includes some of the oldest Cenozoic South American mammals, and the oldest ones for Patagonia. In addition to frogs, turtles, and crocodiles, an unusual mammalian assemblage is formed by a mixture of Mesozoic lineages of Gondwanan origin and therians (eutherians and metatherians) derived from Laurasian immigrants. This paper describes new remains of the Didolodontidae ‘condylarth’ genusEscribaniaBonaparte, Van Valen & Kramarz, 1993. The new material includes an isolated right lower third molar with talonid morphology different from the homologous structure of the type speciesEscribania chubutensisBonaparte, Van Valen & Kramarz, 1993, justifying the recognition of a new species. The derived nature of the didolodontid ‘condylarths’ from the Banco Negro Inferior, their differences with the Mioclaenidae Kollpaniinae from the early Paleocene of Tiupampa, and the record ofbona fidelitoptherns in the Banco Negro Inferior (BNI) suggest an early radiation of the panameriungulates.

scholarly journals Redescription and redefinition of the genus Chiltana Shakila-Mushtaq & Akbar, 1995 (Hemiptera, Fulgoromorpha, Dictyopharidae, Dictyopharini), with description of a new species from Pakistan

ZooKeys ◽  
2019 ◽  
Vol 838 ◽  
pp. 9-20
Author(s):  
Zhi-Shun Song ◽  
Imran Khatri ◽  
Ai-Ping Liang
Keyword(s):  
New Species ◽  
Type Species ◽  
Original Publication ◽  
New Material ◽  
A New Species

The genus Chiltana Shakila-Mushtaq & Akbar, 1995 is redescribed and redefined based on the types and new material from Pakistan. Chiltana includes two species, C.acarinatasp. n. and C.baluchi Shakila-Mushtaq & Akbar, 1995 (the type species), both from Chiltan, Balochistan, Pakistan. A key to the species of the genus is provided. Nomenclatorial remarks on original publication, author, and date of Chiltana are given.

Amended diagnosis of the genus Nannodiaptomus (Copepoda, Calanoida), based on redescription of N. phongnhaensis and description of a new species from caves in central Vietnam

Zootaxa ◽  
2017 ◽  
Vol 4221 (4) ◽  
pp. 457 ◽  
Author(s):  
DUC LUONG TRAN ◽  
ANTON BRANCELJ
Keyword(s):  
New Species ◽  
Type Species ◽  
Taxonomic Position ◽  
Type Locality ◽  
Apical Process ◽  
Terminal Seta ◽  
Central Vietnam ◽  
New Material ◽  
A New Species ◽  
Swimming Leg

Nannodiaptomus phongnhaensis Dang & Ho, 2001, an endemic stygobiotic diaptomid from Vietnam and the type species of the genus Nannodiaptomus Dang & Ho, 2001, is redescribed on the basis of a new material from its type locality: Hang Phong Nha Cave, Quang Binh province, central Vietnam. We also designated a neotype, because the type material has been lost. The diagnosis of the genus is amended, based on the description of the neotype. The taxonomic position of the genus in the subfamily Speodiaptominae is proposed, and its relationships with other genera of this subfamily are discussed. A new cave-dwelling species Nannodiaptomus haii sp. nov., from a cave near the type locality of N. phongnhaensis, is also described and illustrated. The new species differs from the type species of the genus, among other things, by the structure of male’s left swimming leg 5, where the inner margin of the apical process and the sub-terminal seta on the swimming leg 5 Exp-2 have small serrated membranes, but these bear 3–4 distinct denticular protrusions in N. phongnhaensis. 

scholarly journals Middle Cambrian trilobites from the Ekspedition Bræ Formation of North Greenland, with a reappraisal of the genusElrathina

2016 ◽  
Vol 91 (2) ◽  
pp. 265-293 ◽  
Author(s):  
Gerd Geyer ◽  
John S. Peel
Keyword(s):  
New Species ◽  
Type Species ◽  
Ontogenetic Development ◽  
Burgess Shale ◽  
Middle Cambrian ◽  
Fossil Assemblage ◽  
Detailed Assessment ◽  
Excellent Preservation ◽  
A New Species ◽  
North Greenland

AbstractThe richly fossiliferous Ekspedition Bræ Formation of North Greenland yields a typical oligospecific fossil assemblage with well-preserved trilobites, helcionelloids, and lingulate brachiopods. The trilobites includeItagnostus subhastatusnew species,Itagnostussp. cf.I.gaspensis(Rasetti, 1948),Elrathina aphroditenew species,Elrathina athenanew species,Elrathina heranew species, andElrathia groenlandicanew species—a fossil assemblage typical of theBathyuriscus-ElrathinaZone as known from the Cordilleran regions of Laurentia. Excellent preservation allows a detailed assessment of the prosopon and elucidates aspects of the ontogenetic development ofElrathinaandElrathia. An evaluation ofElrathinaincludes a redescription of its type species,E.cordillerae(Rominger, 1887), based on the type material, and indicates that most specimens collected from the Burgess Shale and previously dealt with asE.cordilleraerepresent a new species.

scholarly journals New record of the genus Manipuria Jacoby (Chrysomelidae, Criocerinae) from China, with description of a new species

ZooKeys ◽  
2021 ◽  
Vol 1009 ◽  
pp. 29-43
Author(s):  
Yuan Xu ◽  
Wenxuan Bi ◽  
Hongbin Liang
Keyword(s):  
New Species ◽  
New Record ◽  
Type Species ◽  
Yunnan Province ◽  
Additional Data ◽  
New Material ◽  
A New Species

After a century since the erection of the genus Manipuria from India, its type species M. dohertyi Jacoby was discovered in Yunnan Province of China. A new Manipuria species, M. yuaesp. nov., is described from Tibet and Yunnan, China. The new species differs from M. dohertyi by its larger size, unicolored elytra, and absence of a tooth-like prolongation in front of the mandible. Additional data is provided for M. dohertyi based on new material from China.

Polypleuraspis (Arthropoda, Trilobita) from the middle Cambrian (Miaolingian Series) around Kane Basin (Nunavut and Greenland)

2020 ◽  
Vol 57 (1) ◽  
pp. 16-24
Author(s):  
John S. Peel
Keyword(s):  
British Columbia ◽  
New Species ◽  
North American ◽  
Type Species ◽  
Wood Formation ◽  
Ellesmere Island ◽  
Burgess Shale ◽  
Middle Cambrian ◽  
Shale Formation ◽  
A New Species

Polypleuraspis Poulsen, 1927, originally established on the basis of a single trilobite pygidium from the Cape Wood Formation of Inglefield Land, northwestern Greenland, is redescribed on the basis of material from additional occurrences in the Cape Wood and Telt Bugt formations exposed around Kane Basin in Ellesmere Island (Nunavut) and northern and northwestern Greenland. Polypleuraspis occurs together with Glossopleura Poulsen, 1927 in the Glossopleura walcotti Poulsen, 1927 Biozone of the Delamaran Stage of North American (Laurentian) usage, in middle Cambrian strata (Miaolingian Series) of the Wuliuan Stage. The type species, Polypleuraspis solitaria Poulsen, 1927, is compared with Polypleuraspis insignis Rasetti, 1951 from the Stephen Formation (Burgess Shale Formation) of British Columbia and to a new species from the Telt Bugt Formation of Daugaard-Jensen Land: Polypleuraspis glacialis sp. nov. Polypleuraspis cooperi Robison and Babcock, 2011, from the Spence Shale of Utah of similar age, is assigned to Polypleuraspidella gen. nov.

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