Systematics of a survivor: the Cambrian kingstoniid trilobite Blountia Walcott, 1916 across the Marjuman–Steptoean (Guzhangian–Paibian) extinction interval in Laurentian North America

Zootaxa ◽  
2020 ◽  
Vol 4804 (1) ◽  
pp. 1-79
Author(s):  
MADISON ARMSTRONG ◽  
STEPHEN R. WESTROP ◽  
JENNIFER D. EOFF
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
North America ◽  
Mass Extinction ◽  
Archival Material ◽  
Number Of Species

The Cambrian (Marjuman–Steptoean; Guzhangian–Paibian) kingstoniid trilobite Blountia Walcott, 1916 is distributed widely in shelf strata of Laurentian North America. Species known from Marjuman formations were lost at the mass extinction at the end of that stage. New species entered the succession during and after the extinction interval, only to disappear within the Aphelaspis Zone of the lower part of the Steptoean Stage. Steptoean species and several uppermost Marjuman (Crepicephalus Zone) species are treated in this monograph. New collections and revision of type and other archival material increase the number of species in Steptoean strata from two to six. Phylogenetic analysis supports monophyly of Blountia and Maryvillia Walcott, 1916; Blountina Lochman, in Lochman & Duncan, 1944 is retained as a monotypic taxon. Steptoean species do not form a single subclade within the cladogram, so there is no evidence for a simple monophyletic radiation following the end-Marjuman extinction. New species are Blountia angelae, B. morgancreekensis, B. nevadensis, B. newfoundlandensis, and B. tennesseensis. 

The Upper Ordovician trilobite Raymondites Sinclair, 1944 in North America

2015 ◽  
Vol 89 (1) ◽  
pp. 110-134 ◽  
Author(s):  
Robert E. Swisher ◽  
Stephen R. Westrop ◽  
Lisa Amati
Keyword(s):  
New York ◽  
Phylogenetic Analysis ◽  
New Species ◽  
North America ◽  
Upper Ordovician ◽  
Archival Material ◽  
Palpebral Lobe ◽  
Two New Species

AbstractThe Upper Ordovician (Sandbian–Katian) bathyurid trilobite Raymondites Sinclair is revised using new collections from Missouri and Ontario, and archival material from Illinois, Wisconsin, New York, and Ontario. Phylogenetic analysis supports monophyly of Raymondites, but recognition of this genus renders Bathyurus Billings paraphyletic. We treat Raymondites as a subgenus of Bathyurus and label the paraphylum of species traditionally assigned to the latter as Bathyurus sensu lato. Bathyurus (Raymondites) is composed of five previously named species, B. (R.) spiniger (Hall), B. (R.) longispinus (Walcott), B. (R.) ingalli (Raymond), B. (R.) bandifer Sinclair, and B. (R.) trispinosus (Wilson), and two new species, B. (R.) clochensis, and B. (R.) missouriensis; an eighth species is placed in open nomenclature. All species share tuberculate sculpture on the glabella, a relatively short palpebral lobe whose length is less than half of preoccipital glabellar length, and a pygidial outline that is well rounded posteriorly. Aside from the most basal species, B. (R.) longispinus, they also possess occipital spines and, where the pygidium is known, axial pygidial spines.

Phylogeny, taxonomy and biology of mites of the genera Chelacheles and Neochelacheles (Acari : Cheyletidae)

2004 ◽  
Vol 18 (5) ◽  
pp. 547 ◽  
Author(s):  
Andre V. Bochkov ◽  
Barry M. OConnor
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
North America ◽  
Taxonomic Revision ◽  
Single Species ◽  
Model Species ◽  
Species Groups

Taxonomic revision and parsimony-based phylogenetic analysis of species in two closely related genera of predaceous Cheyletidae, Chelacheles Baker and Neochelacheles Smiley & Williams, are conducted. Among species of these genera, C. algericus Fain & Bochkov, syn. nov. and C. humilis Rasool, Chaudhri & Akbar, syn. nov. are synonymised with C. strabismus Baker and C. bakeri Attiah, respectively. Six new species are described: C.�aigamuxa, sp. nov.; C. klimovi, sp. nov.; C. seminole, sp. nov.; C. temoak, sp. nov.; N. corpuzrarosae, sp. nov.; and N. mendicus, sp. nov. The genus Chelacheles includes two species-groups, strabismus (seven species) and peritremaculatus (seven species), and two ungrouped species, C. michalskii Samsinak and C. stigmaeoides Barilo. The genus Neochelacheles (three species) is represented by a single species from North America and by two Philippine endemics. New diagnoses of the genera are given as well as descriptions of postembryonic stages of a model species in each genus, a key, and redescriptions for most species. The biology of these mites is briefly discussed. Phylogenetic analysis indicates that the associations of some species with polypore bracket fungi have arisen independently in the genera Chelacheles and Neochelacheles.

Phylogenetics, systematics, paleoecology, and evolution of the trilobite genera Paladin and Kaskia from the United States

2008 ◽  
Vol 82 (3) ◽  
pp. 511-527 ◽  
Author(s):  
David K. Brezinski
Keyword(s):  
United States ◽  
Phylogenetic Analysis ◽  
New Species ◽  
North America ◽  
Environmental Stress ◽  
Shallow Water ◽  
The United States ◽  
Outer Shelf ◽  
Shelf Edge ◽  
Middle Carboniferous

Late Mississippian and earliest Pennsylvanian trilobite faunas of North America are dominated by the Paladin and Kaskia clades. Phylogenetic analysis of middle Carboniferous species of these clades demonstrates the close ancestral relationship between these groups. The Kaskia clade consists of eight species: K. chesterensis Weller, 1936, K. osagensis (Cisne, 1967), K. longispina (Strong, 1872), K. wilsoni (Walter, 1924), K. genevievensis (Walter, 1924), K. rosei (Cisne, 1967), K. gersnai n. sp., and K. rollinsi n. sp. Kaskia Weller, 1936 ranges from late Osagean to middle Chesterian (early Visean-early Serpukhovian) and is restricted to cyclothemic shelf and nearshore deposits. Species of Kaskia appear to have evolved in areas of shallow water and high environmental stress. The Paladin clade consists of 12 species including previously named species P. morrowensis (Mather, 1915), P. girtyianus Hahn and Hahn, 1970, P. rarus Whittington, 1954, P. helmsensis Whittington, 1954, and P. moorei (Branson, 1937). New species belonging to this clade are Paladin moorefieldensis n. sp., P. pleisiomorphus n. sp., P. imoensis n. sp., P. mangeri n. sp., and P. wapanukaensis n. sp. This group ranges from the early Chesterian to early Morrowan (late Viseanlate Bashkirian). Species of Paladin appear to be confined to outer shelf shelf-edge and off-shelf facies where presumably deeper water environments existed. This is manifested in their paleogeographic distribution, which is paleoenvironmentally controlled.

Re-evaluation of the genus Xanthosia Bell, 1863 (Decapoda: Brachyura: Xanthidae) and description of two new species from the Cretaceous of Texas

1999 ◽  
Vol 73 (1) ◽  
pp. 77-90 ◽  
Author(s):  
C. Schweitzer Hopkins ◽  
Eric W. Salva ◽  
Rodney M. Feldmann
Keyword(s):  
New Jersey ◽  
New Species ◽  
North America ◽  
The Netherlands ◽  
South Dakota ◽  
Tarrant County ◽  
Number Of Species ◽  
Two New Species

Description of two new species of the brachyuran genus Xanthosia Bell, 1863, from the upper Albian to Cenomanian Weno and Pawpaw formations from Tarrant County, Texas, increases the number of species in the genus to fifteen. Xanthosia has been recognized in England, the Netherlands, Madagascar, and in in the states of New Jersey, South Dakota, and Texas. The geologically oldest species from England gave rise to species from North America, Europe, and Madagascar. One group of species, with representatives from South Dakota, New Jersey, and Madagascar, may represent a separate taxon. The species “Xanthosia” robertsi Secretan is herein removed from the genus and placed within the Portunidae, not the Xanthidae.

scholarly journals Species review of the genus Boreophilia Benick from North America (Coleoptera, Staphylinidae, Aleocharinae, Athetini): Systematics, habitat, and distribution

ZooKeys ◽  
2019 ◽  
Vol 848 ◽  
pp. 57-102 ◽  
Author(s):  
Jan Klimaszewski ◽  
Derek S. Sikes ◽  
Adam Brunke ◽  
Caroline Bourdon
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
North America ◽  
Color Image ◽  
Dna Barcode ◽  
Valid Species ◽  
Black And White ◽  
Sternite Viii ◽  
First Time ◽  
A New Species

Fourteen species of the genus Boreophilia Benick are now recognized in North America. Boreophiliainsecuta (Eppelsheim), reported by Lohse (1990) from North America, is a misidentification of a new species, which is described here as B.neoinsecuta Klimaszewski, sp. n., and the true B.insecuta (Epp.) does not occur in North America. An additional new species is found in Alaska, and described as B.beringi Klimaszewski & Brunke, sp. n. The following three species are synonymized (second name being valid): Boreophiliaherschelensis Klimaszewski & Godin, 2012, with Boreophiliavega (Fenyes, 1920); Boreophiliamanitobensis Lohse, 1990, with B.caseyi Lohse, 1990; and B.angusticornis (Bernahuer, 1907) with B.subplana (J Sahlberg, 1880), based on study of genital structures and external morphology. Athetagelida J Sahlberg, 1887, and Athetamunsteri Bernhauer, 1902, considered as Boreophilia in recent publications, are transferred to the genus Atheta Thomson, subgenus Dimetrota. Boreostibapiligera (J Sahlberg) is transferred to Boreophilia based on morphology and the results of our phylogenetic analysis. Boreophilianearctica is recorded from Alberta and B.nomensis is recorded from British Columbia for the first time. Each valid species is illustrated by color image of habitus, and black and white images of genitalia and tergite and sternite VIII. A new key to all Nearctic species of the genus is provided. DNA barcode data were available for nine of the 14 species, which we downloaded, analyzed, and used as additional evidence for the taxonomic conclusions reached herein.

New species of Mycena (Mycenaceae, Agaricales) with colored lamellae and three new species records from China

Phytotaxa ◽  
2018 ◽  
Vol 361 (3) ◽  
pp. 266 ◽  
Author(s):  
QIN NA ◽  
TOLGOR BAU
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Bayesian Inference ◽  
Maximum Likelihood ◽  
North America ◽  
Morphological Characters ◽  
Its Sequences ◽  
Monophyletic Clade ◽  
Three New Species ◽  
First Time

Four species of Mycena possessing a colored lamellar are reported. Of these, Mycena entolomoides is described as new and is distinguished by an incarnate color of the whole lamellae, and M. citrinomarginata, M. purpureofusca, and M. strobilinoidea are recorded for the first time in China. A complete description, drawings and photographs of the morphological characters of M. entolomoides sp. nov. are accompanied by comparisons with closely related taxa. The three species newly recorded in China are considered in agreement with those species in Europe and North America. Phylogenetic analysis based on ITS sequences showed that M. entolomoides sp. nov. forms a monophyletic clade, well supported by maximum likelihood and Bayesian inference.

Two New Species of Bibloplectus Reitter (Coleoptera: Staphylinidae: Pselaphinae) from the Orlando Park Collection, Field Museum of Natural History

Zootaxa ◽  
2018 ◽  
Vol 4407 (2) ◽  
pp. 288
Author(s):  
BRITTANY E. OWENS ◽  
CHRISTOPHER E. CARLTON
Keyword(s):  
New Species ◽  
North America ◽  
Natural History ◽  
Type Locality ◽  
Eastern North America ◽  
Museum Collections ◽  
Field Museum ◽  
Number Of Species ◽  
Two New Species ◽  
Species Type

Two new species of Bibloplectus Reitter, 1881 are described from the Orlando Park Collection of Pselaphinae at the FMNH (Field Museum of Natural History, Chicago, IL, USA): Bibloplectus silvestris Owens and Carlton, new species (type locality, Urbana, IL, USA) and Bibloplectus wingi Owens and Carlton, new species (type locality, Shades State Park, IN, USA). Types of these new species were part of a series of specimens bearing unpublished Park manuscript names in both the pinned and slide collection at the FMNH. They bring the total number of species in the genus in eastern North America to twenty-three. Resolving these manuscript names adds to previous efforts to uncover elements of the hidden diversity of North American Bibloplectus from museum collections (Owens and Carlton 2016, Owens and Carlton 2017) and highlights the importance of close examination of the Orlando Park pselaphine collection as a valuable historic and taxonomic resource. 

Allium yamadagensis (Amaryllidaceae) a new species from Turkey

Phytotaxa ◽  
2019 ◽  
Vol 400 (1) ◽  
pp. 31 ◽  
Author(s):  
GÜLNUR EKŞI ◽  
HASAN YILDIRIM
Keyword(s):  
New Species ◽  
North America ◽  
Central Asia ◽  
Northern Hemisphere ◽  
Mediterranean Region ◽  
Molecular Data ◽  
Western North America ◽  
Number Of Species ◽  
Phylogenetic Studies ◽  
A New Species

Allium Linneaus (1753: 294) is one of the largest monocot genera with about 900 species (Govaerts et al. 2019) naturally distributed throughout the northern hemisphere (Stearn 1978, 1992, Fritsch & Keusgen 2006, Friesen et al. 2006, Fritsch & Abbasi 2008). The main centre of biodiversity occurs in Southwestern and Central Asia and the Mediterranean region, a smaller center is found in western North America (Friesen et al. 2006, Nguyen et al. 2008). The genus is characterized by bulbs enclosed in membranous, fibrous or reticulate tunics, free or basally connate tepals and often a subgynobasic style (Friesen et al. 2006). The genus Allium is a member of Amaryllidaceae subfam. Allioideae, tribe Allieae (APGIII 2009, Chase & Reveal 2009). Recent phylogenetic studies based on molecular data were combined with morphology, anatomy, and cytology resulting in new proposals for sectional and subsectional relationships (Linne von Berg et al. 1996, Dubouzet & Shinoda 1999, Friesen et al. 2000, 2006, Gurushidze et al. 2008, Nguyen et al. 2008, Li et al. 2010, Choi et al. 2012). The most recent Allium classification includes 15 subgenera and 80 sections (Friesen et al. 2006). Allium is a taxonomically quite complex and has unresolved nomenclatural problems. In the last decades, many Allium taxa were newly described for Turkey and the number of species known to occur in the country is approximately 200, classified into 15 sections, ca. one-third which being endemic (Kollmann 1984, Koyuncu 2012, Özhatay & Kandemir 2014, Ekşi et al. 2015, 2016, Duman et al. 2017, Fırat et al. 2018).

Lysimachia savranii (Primulaceae), a new species from the eastern Taurus in Turkey

Phytotaxa ◽  
2016 ◽  
Vol 267 (3) ◽  
pp. 228 ◽  
Author(s):  
İSA BAŞKÖSE ◽  
ALİ KESKİN ◽  
KAMAL GURBANOV
Keyword(s):  
New Species ◽  
North America ◽  
Northern Hemisphere ◽  
Mountain Regions ◽  
Number Of Species ◽  
Centre Of Origin ◽  
Tropical Mountain ◽  
Western Guizhou ◽  
A New Species

The genus Lysimachia Linnaeus (1753: 146) comprises about 180 species, distributed in temperate and subtropical parts of the northern hemisphere, as well as in some tropical mountain regions (Ray 1956). The majority of species grows in China, i.e. Yunnan, Southern Sichuan, Western Guizhou and Guangxi regions (Hu & Kelso 1996), which is also considered the centre of origin of this genus (Chen & Hu 1979). A limited number of species can be found in North America (20; Cholewa 2009), in Europe (13; Ferguson 1972), in Russia (11; Fedorov 1967), with 7 species occurring in Turkey (Coşkunçelebi 2012).

scholarly journals The first Cenozoic spinicaudatans from North America

2017 ◽  
Vol 91 (3) ◽  
pp. 467-476 ◽  
Author(s):  
Alycia L. Stigall ◽  
Roy E. Plotnick ◽  
Lisa E. Park Boush
Keyword(s):  
New Species ◽  
Calcium Carbonate ◽  
North America ◽  
Mass Extinction ◽  
Fossil Record ◽  
Lake Levels ◽  
Geochemical Conditions ◽  
Southwestern Montana ◽  
Early Oligocene ◽  
Clam Shrimp

AbstractA new spinicaudatan species,Estherites?jocelynaenew species, is described from more than fiftyspecimens collected from the Medicine Lodge Formation (early Oligocene) of the Beaverhead Basin in southwestern Montana, USA. This is the first spinicaudatan species reported from Cenozoic strata of North America and is the second-youngest fossil clam shrimp described globally. The new species extends the range of the superfamily Estheriteoidea into the Paleogene. Carapaces ofE.?jocelynaen. sp. are preserved as a calcium carbonate replacement of the original chitin-calcium-phosphate structure, which is an uncommon style of preservation for spinicaudatans. The unique preservation coupled with the range extension suggests that the sparse Cenozoic fossil record of spinicaudatans may be partly attributable to preservation bias related to geochemical conditions rather than exclusively to diversity decline following the end-Cretaceous mass extinction. The presence ofE.?jocelynaen. sp. in the Medicine Lodge Formation indicates that lakes in the Beaverhead Basin experienced seasonality and fluctuating lake levels with at least some drying at the lake margins. The ecological inferences support previous paleoenvironmental interpretations based on paleobotanical and other faunal evidence.

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