New information on olenelline trilobites from the Cambrian Sekwi Formation in northwestern Canada

2010 ◽  
Vol 47 (12) ◽  
pp. 1445-1449 ◽  
Author(s):  
Francine R. Abe ◽  
Bruce S. Lieberman ◽  
Michael C. Pope ◽  
Kelly Dilliard
Keyword(s):  
New Species ◽  
Shallow Water ◽  
Great Variability ◽  
Early Cambrian ◽  
New Information ◽  
Biostratigraphic Correlation ◽  
Low Diversity ◽  
Peritidal Facies ◽  
Mackenzie Mountains ◽  
A New Species

A new species of olenelline trilobite, Nevadella keelensis , is described from the Early Cambrian (Cambrian Series 2, Stage 3) in the Sekwi Formation, Mackenzie Mountains, Canada. The difficulty in discerning between Nevadia Walcott, 1910 and Nevadella Raw, 1936 is discussed, and a revision of the two genera is suggested, particularly with the addition of Nevadella keelensis n. sp. A holmiid trilobite, perhaps conspecific with Esmeraldina rowei (Walcott, 1910), was also confirmed from the same locality. The E. sp. aff. rowei represents the narrow form of a species known for great variability in cephalic form. The trilobite material comes from a low diversity, shallow water, peritidal facies that was not sampled in previous studies of Cambrian fossils in the area, and could prove useful in facilitating biostratigraphic correlation across the Selwyn Basin and with other parts of Laurentia as well.

scholarly journals Tarimspirafrom the Cambrian (Series 2, Stage 4) of Laurentia (Greenland): extending the skeletal record of paraconodontid vertebrates

2018 ◽  
Vol 93 (1) ◽  
pp. 115-125
Author(s):  
John S. Peel
Keyword(s):  
New Species ◽  
Type Species ◽  
Weak Acid ◽  
Early Cambrian ◽  
Basal Cavity ◽  
Stage 4 ◽  
First Time ◽  
A New Species ◽  
North Greenland

AbstractPhosphatic sclerites of the problematicTarimspiraYue and Gao, 1992 (Cambrian Series 2) recovered by weak acid maceration of limestones display a unique range of mainly strongly coiled morphologies. They were likely organized into multielement scleritomes, but the nature of these is poorly known; some sclerites may have had a grasping function.Tarimspirasclerites grew by basal accretion in an analogous fashion to younger paraconodonts (Cambrian Series 3–4) but lack a basal cavity. Based on proposed homologies,Tarimspiramay provide an extension of the early vertebrate paraconodont–euconodont clade back into the early Cambrian.Tarimspirais described for the first time from Laurentia (North Greenland), extending its known range from China and Siberia in Cambrian Series 2. In addition to the type species,Tarimspira planaYue and Gao, 1992, the Greenland record ofTarimspiraincludes two morphotypes of a new species,Tarimspira artemi.UUID:http://zoobank.org/c7c536c8-cdaf-49a9-ae1d-77c392f553fc.

scholarly journals Anchialine biodiversity in the Turks and Caicos Islands: New discoveries and current faunal composition

2020 ◽  
Vol 49 (2) ◽  
pp. 71-86
Author(s):  
Brett Gonzalez ◽  
◽  
Alejandro Martínez ◽  
Jørgen Olesen ◽  
Sarit Truskey ◽  
...  
Keyword(s):  
New Species ◽  
Shallow Water ◽  
New Records ◽  
Invertebrate Fauna ◽  
Faunal Composition ◽  
Turks And Caicos Islands ◽  
New Findings ◽  
Faunal List ◽  
A New Species ◽  
Blue Holes

Lying at the southernmost point of the Lucayan Archipelago, the Turks and Caicos Islands are amongst the better studied localities for anchialine cave biodiversity. For nearly five decades, novel invertebrate fauna, comprised primarily of crustaceans, have been collected from these tidally influenced pools – but new findings are always on the horizon. Herein we present new records of crustaceans and annelids from anchialine blue holes and horizontal caves of the Turks and Caicos. These findings include two potentially new species of meiofaunal annelids and a new species of remipede collected from a shallow water cave pool. Our 2019 expedition additionally expands known faunal distributions for several taxa across the Caicos islands, and raises the biodiversity of the region to 35 species, 13 of them considered endemic. This is the first comprehensive faunal list for the anchialine systems in the Caicos Bank.

New well-preserved scleritomes of Chancelloriida from early Cambrian Guanshan Biota, eastern Yunnan, China

2018 ◽  
Vol 92 (6) ◽  
pp. 955-971 ◽  
Author(s):  
Jun Zhao ◽  
Guo-Biao Li ◽  
Paul A. Selden
Keyword(s):  
New Species ◽  
Detailed Comparison ◽  
The Body ◽  
Single Element ◽  
Early Cambrian ◽  
Top Down ◽  
Middle Cambrian ◽  
Unusual Form ◽  
Guanshan Biota ◽  
A New Species

AbstractA large number of well-preserved chancelloriid scleritomes from the Guanshan biota, early Cambrian of Yunnan, China, are described as a new species,Allonnia tenuisn. sp., and provide solid evidence for the original appearance of these enigmatic animals, based on specimens compacted laterally and top-down. With the assistance of a flexible integument, chancelloriids, especiallyAllonniafrom early and middle Cambrian, may have had the ability to partially or completely expand and contract the body, which might have played an important role in feeding. A new metazoan with single-element spines,Nidelric gaoloufangensisn. sp., is also described. Preservation and affinity are discussed. Detailed comparison of the morphology of the body and spines of this metazoan indicate that it shares many similarities with chancelloriids, of which it may be an unusual form.UUID:http://zoobank.org/2708d95a-1fae-46fc-afea-9707ae97a4d7

A new small-celled diatom from Brazil - Luticola minutissima sp. nov., with comparison to the type of the Antarctic L. neglecta Zidarova, Levkov & Van de Vijv

Phytotaxa ◽  
2022 ◽  
Vol 530 (3) ◽  
pp. 287-294
Author(s):  
MATEUSZ RYBAK ◽  
ŁUKASZ PESZEK ◽  
ŁUKASZ SKOCZYLAS ◽  
THELMA ALVIM VEIGA LUDWIG
Keyword(s):  
New Species ◽  
Palm Tree ◽  
Similar Species ◽  
Concrete Walls ◽  
New Information ◽  
Eastern Brazil ◽  
The Antarctic ◽  
The City ◽  
A New Species ◽  
Small Valve

The samples for this study were collected from terrestrial mosses and lichens growing on palm tree trunks and concrete walls in the city of Rio de Janeiro, south-eastern Brazil. During the investigation on diatom diversity, a new species from the genus Luticola was found. The new species occurred individually at all sampling sites. The aim of this paper is to provide a morphological and ecological description of Luticola minutissima sp. nov. from an aerophytic environment. The species is characterized by a small valve size (5.2–16.8 μm length and 3.7–4.4 wide) and abruptly hooked proximal raphe endings (ca. 90-degree angle). Additionally for comparison, type material of the most similar species, Luticola neglecta Zidarova, Levkov & Van de Vijver, was studied and new information for the ultrastructure of the latter species is provided as well.

Turleania rubriguttatus, a new species of pagurid hermit crab (Decapoda: Anomura: Paguroidea) from shallow water in Japan, with notes on T. senticosa (McLaughlin & Haig, 1996)

Zootaxa ◽  
2020 ◽  
Vol 4834 (1) ◽  
pp. 96-106
Author(s):  
TOMOYUKI KOMAI
Keyword(s):  
New Species ◽  
Shallow Water ◽  
Hermit Crab ◽  
Dorsal Surface ◽  
The Philippines ◽  
The Status ◽  
Shallow Subtidal ◽  
The Right ◽  
Kochi Prefecture ◽  
A New Species

A new species of the pagurid hermit crab genus Turleania McLaughlin, 1997, T. rubriguttatus, is described on the basis of two specimens, including one male and one female, from shallow subtidal waters in Kochi Prefecture, Japan. The new species appears close to T. albatrossae (McLaughlin & Haig, 1996), known from the Philippines, but the proximally unarmed dorsal surface of the right chela palm and the lack of a dorsomesial row of spines on the left cheliped carpus easily distinguish T. rubriguttatus n. sp. from T. albatrossae. Examination of the type material of T. similis Komai, 1999 and T. spinimanus Komai, 1999, and supplemental material from Japan, confirms that the two taxa are synonymous with T. senticosa (McLaughlin & Haig, 1996), as was suggested by previous authors. Re-examination clarified that in T. senticosa the maxilliped 3 has no developed arthrobranchs, and this led the author to assess the status of T. sinensis Han, Sha & An, 2016, which is also synonymised with T. senticosa. 

On a new species of Siboglinum (Pogonophora), found on both sides of the North Atlantic

1963 ◽  
Vol 43 (2) ◽  
pp. 513-517 ◽  
Author(s):  
Eve C. Southward
Keyword(s):  
New Species ◽  
Shallow Water ◽  
North Atlantic ◽  
Related Species ◽  
The North ◽  
The Pacific ◽  
The North Atlantic ◽  
A New Species

A description is given of Siboglinum holmei sp.nov., a shallow-water Atlantic species. It is compared with S. caulleryi, a related species from the Pacific.

A new deep-sea species of the caridean genus Bresilia Calman, 1896 (Crustacea: Decapoda: Bresiliidae) from Sagami Bay, central Japan

Zootaxa ◽  
2017 ◽  
Vol 4299 (3) ◽  
pp. 405
Author(s):  
TOMOYUKI KOMAI ◽  
HISANORI KOHTSUKA
Keyword(s):  
New Species ◽  
Shallow Water ◽  
Deep Sea ◽  
Ovigerous Female ◽  
Ventral Surface ◽  
Ryukyu Islands ◽  
Female Specimen ◽  
Sagami Bay ◽  
Central Japan ◽  
A New Species

A new species of the rare caridean genus Bresilia Calman, 1896, B. cinctus, is described and illustrated on the basis of a single ovigerous female specimen collected from Sagami Bay, central Japan, at 218–318 m depth. The new species is morphologically most similar to B. rufioculus Komai & Yamada, 2011, known only from shallow water cave of Ie Island (depths 14–17 m), Okinawa Islands, Ryukyu Islands, but many characters, including the proportionally shorter rostrum, the well developed suborbital lobe of the carapace, and the presence of a spiniform seta on the ventral surface of the pereopod 1 palm, immediately distinguish the new species from B. rufioculus. Bresilia cinctus n. sp. is the first species of the genus known from the Japanese main islands. The discovery of the new species led us to reassess the merit of the informal division of Bresilia proposed by Komai & Yamada (2010). An identification key to the ten named species of Bresilia is presented. 

A review of the genus Tryphosella (Crustacea: Amphipoda) from Britain and Ireland, with the description of a new species Tryphosella lowryi

2006 ◽  
Vol 86 (5) ◽  
pp. 1067-1081 ◽  
Author(s):  
N.M. Kilgallen ◽  
A.A. Myers ◽  
D. McGrath
Keyword(s):  
New Species ◽  
Shallow Water ◽  
British Isles ◽  
Number Of Species ◽  
Shallow Water Species ◽  
First Time ◽  
A New Species ◽  
Water Species

A review of the shallow-water species of the genus Tryphosella from the British Isles is presented and a new species, Tryphosella lowryi, is described. In addition, Tryphosella minima is recorded from this region for the first time. This brings to five the total number of species of this genus now known from the British Isles. All taxa are fully described and illustrated, and a key to the species is provided.

scholarly journals A clearly identifiable postlarva in the life cycle of a new species of Pliciloricus (Loricifera) from the deep sea of the Angola Basin

Zootaxa ◽  
2009 ◽  
Vol 2096 (1) ◽  
pp. 50-81 ◽  
Author(s):  
GUNNAR GAD
Keyword(s):  
New Species ◽  
Life Cycle ◽  
Deep Sea ◽  
Type I ◽  
Double Row ◽  
Body Regions ◽  
New Information ◽  
Two Phases ◽  
Distinguishing Features ◽  
A New Species

A newly discovered species of Pliciloricus from the deep sea of the Angola Basin (Namibia, Atlantic) seems to have two types of postlarvae in its life cycle. Type I is a simplified but clearly identifiable postlarval stage, the other type II consists only of a thin layer of cuticle as the remnant of a postlarva. Both types contain adults that have moulted from them. The simplified type I postlarva has a fully developed lorica with an ornamentation identical to that of the adult, but other body regions are reduced with only a few structures left. The discovery of this clearly identifiable postlarva is important, because it supports the conclusion that Pliciloricus-species originally moults from postlarval stages as well as other taxa of Loricifera. Furthermore, it could be concluded that the simple cuticle layer surrounding most adults found during their metamorphosis is the remnant of a postlarval stage. The life cycle of the new species seems to include two phases. After to the bisexual is a unisexual phase, represented by a simplified parthenogenetic adult stage which lacks most parts of the adult morphology. The adults of P. diva sp. n. differ from other species in having among others (1) a mouth cone with four strong cuticular bars plus eight primary oral ridges; (2) leaf-like clavoscalids which are very broad basally and narrow distally, and have more than 22 transverse cross walls; (3) a strongly sclerotized double-organ consisting of four rami; (4) large spinoscalids of second row shorter than clavoscalids, (5) short type B spinoscalids of fourth row with claw-tips and with a double row of five teeth as well as distally with a double row of minute denticles; (6) an anterior margin of the lorica with bicuspid protrusions and specific crescent-shaped ornamentations; (7) a midventral plica with five bar-like transversal strengthened ridges. Distinguishing features of the Higgins-larva are (1) short clavoscalids with broad second segments; (3) a collar with seven flosculi located in small pits; posterolateral setae being short but strong and pod-like. The study also revealed new information about the double-organ of the adult and the buccal structures of the Higgins-larva.

New Dicerurini from Europe, mostly Sweden (Diptera: Cecidomyiidae, Porricondylinae)

Zootaxa ◽  
2019 ◽  
Vol 4559 (2) ◽  
pp. 245
Author(s):  
MATHIAS JASCHHOF ◽  
CATRIN JASCHHOF
Keyword(s):  
Czech Republic ◽  
New Species ◽  
Geographic Distribution ◽  
New Genus ◽  
Slovak Republic ◽  
Junior Synonym ◽  
New Information ◽  
Male Morphology ◽  
A New Species

The taxonomy of several genera of the tribe Dicerurini (subfamily Porricondylinae) is revisited, induced by the discovery of 11 new species in Malaise catches of various provenances. The bulk of the specimens interpreted here is of Swedish origin. Species described as new to science are Desertepidosis grytsjoenensis sp. nov. (from Sweden), D. robusta sp. nov. (Sweden), Linnaeomyia pratensis sp. nov. (Czech Republic), Neurepidosis ekdalensis sp. nov. (Sweden), N. emarginata sp. nov. (Sweden, Czech Republic), N. hybrida sp. nov. (Sweden), Tetraneuromyia brevipalpis sp. nov. (Sweden, Slovak Republic), T. discrepans sp. nov. (Sweden), T. errata sp. nov. (Sweden), and T. lapponica sp. nov. (Sweden). A new genus, Gardenforsia gen. nov., is introduced for G. oelandica sp. nov. (Sweden), a new species with regressive male morphology. The generic definitions of Desertepidosis Mamaev & Soyunov, 1989 (including Ubinomyia Mamaev, 1990 syn. nov. as new junior synonym) and Linnaeomyia Jaschhof & Jaschhof, 2015 are revised. A key to males of Desertepidosis is presented. New information on the morphology and geographic distribution is provided for Linnaeomyia hortensis Jaschhof & Jaschhof, 2015; Tetraneuromyia bulbifera Mamaev, 1964; and T. lamellata Spungis, 1987. 

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