New cheirurinid trilobites from the lower Whittaker Formation (Ordovician), southern Mackenzie Mountains

1976 ◽  
Vol 13 (7) ◽  
pp. 947-959 ◽  
Author(s):  
Rolf Ludvigsen
Keyword(s):  
New Species ◽  
Late Ordovician ◽  
New Genera ◽  
Monotypic Genus ◽  
Northern Canada ◽  
Mackenzie Mountains ◽  
Anticosti Island ◽  
Early Late

Two new genera of cheirurinid trilobites are described from the lower Whittaker Formation (?Rocklandian to Edenian; late Middle and early Late Ordovician) of the southern Mackenzie Mountains. The monotypic genus, Whittakerites n. gen., is a probable descendant of Ceraurus and is presently known only from northern Canada. Borealaspis n. gen. is established for two species from northern Canada, one of which possibly occurs in northern Greenland, and includes B. numitor (Billings) from Anticosti Island. New species described are Whittakerites planatus, Borealaspis whittakerensis, and B. biformis.

Some silicified Middle Silurian rostroconchs (Mollusca) from the Mackenzie Mountains, N.W.T., Canada

1983 ◽  
Vol 20 (5) ◽  
pp. 844-858 ◽  
Author(s):  
D. I. Johnston ◽  
B. D. E. Chatterton
Keyword(s):  
New Species ◽  
New Genera ◽  
Mackenzie Mountains ◽  
Stratigraphic Ranges ◽  
Early Late

A silicified rostroconch fauna is described from strata of Early (late Llandovery) to Middle (Wenlock to early Ludlow) Silurian age in the Mackenzie Mountains. Two new genera, Cassowarioides and Nehedia, and nine new species, Bigalea buskasi, B. tercierae, Bransonia foxi, Cassowarioides perryi, C. stelcki, Mulceodens schneideri, M. wilsoni, Nehedia bainsi, and N. grovesi, are proposed.An examination of the stratigraphic ranges of some of these taxa suggests that the rostroconchs may have some biostratigraphic utility during the Silurian.

Studies in Australian Tettigoniidae: New genera and species from North Queensland (Tettigoniidae; Conocephalinae; Armadillagraeciini trib. nov. and Agraeciini; Listroscelidinae; Requenini)

Zootaxa ◽  
2012 ◽  
Vol 3173 (1) ◽  
pp. 1 ◽  
Author(s):  
DCF RENTZ ◽  
YOU NING SU ◽  
NORIHIRO UESHIMA
Keyword(s):  
New Species ◽  
Prescribed Burning ◽  
Single Species ◽  
Northern Territory ◽  
New Genera ◽  
Monotypic Genus ◽  
Distribution Maps ◽  
North Eastern ◽  
New Tribe ◽  
A New Species

A new tribe of the Conocephalinae, Armadillagraeciini Rentz, Su, Ueshima is described to include three known Australiangenera: Armadillagraecia, Kapalgagraecia and Lichenagraecia gen. nov. Lichenagraecia gen. nov. is the eastern repre-sentative of the tribe, the others from the Northern Territory, northern Western Australia and western Queensland. Threenew genera in the tribe Agraeciini are described from the rainforests of north-eastern Queensland, Australia. Ingrischa-graecia gen. nov. is known from a single species, I. iterika sp. nov. Emeraldagraecia gen. nov. is known from two spe-cies, E. munggarifrons and E. windsorana spp. nov. Miniagraecia gen. nov. is described from two species: M. milyali andM. goorijupa spp. nov. In the Listroscelidinae; Requenini, a new species of the previously monotypic genus Xingbaoia,X. irvineorum sp. nov. is described from two localities in peril from repeated prescribed burning. Distribution maps, keys, measurements, song patterns and cytological observations are provided for most species.

scholarly journals A coral-eating barnacle, revisited (Cirripedia, Pyrgomatidae)

1995 ◽  
Vol 65 (3) ◽  
pp. 129-175
Author(s):  
Arnold Ross ◽  
William A. Newman
Keyword(s):  
New Species ◽  
Circulatory System ◽  
Host Tissue ◽  
Coral Tissue ◽  
New Genera ◽  
Monotypic Genus ◽  
Hermatypic Coral ◽  
Internal Parasite ◽  
Basal Margin ◽  
Metabolic Activities

The coral-eating barnacle Hoekia monticulariae (Gray, 1831), the only internal parasite among the Thoracica described to this day, is characterized by an irregularly-shaped shell nestled cryptically between the polyps of the hermatypic coral Hydnophora Fischer, 1807, which occurs throughout most of the Indo-West Pacific. Because of its protean form, cirripedologists have failed to appreciate the diversity of taxa related to Hoekia, a presumed monotypic genus. We describe seven new species divided between Hoekia and three new genera, Eohoekia, Parahoekia, and Ahoekia for which the Tribe Hoekiini is proposed. As in other pyrgomatids, calcareous overgrowth by the coral is inhibited around the edge of the wall and aperture. But in Hoekiini a pseudopolyp, upon which the barnacle feeds with modified trophi, covers the wall and aperture. Furthermore, rather than articulating with a calcareous basis, the wall is suspended in coral tissue. Its hypertrophied lateral margin ( = basal margin), in contact with the host’s tissue, is the site where metabolic activities are inferred to take place. In Hoekia and Ahoekia, the wall develops simple or connecting tubes that lead to openings in the margin, which serve as circulatory pathways. A hypertrophied margin and elaborated circulatory system suggests that the Hoekiini may not be wholly dependent on feeding directly on host tissue and/or coelenteronic material, but may also be absorptive parasites. Although other pyrgomatids, in the tribes Pyrgopsellini nov. and Pyrgomatini nov., exercise some control over their hosts by an apertural frill and through discontinuities between the shell and basis, they are still planktotrophic.

A new monotypic genus of ant-mimicking Coraebini (Coleoptera: Buprestidae: Agrilinae ) from Madagascar

Zootaxa ◽  
2008 ◽  
Vol 1817 (1) ◽  
pp. 65 ◽  
Author(s):  
C. L. BELLAMY
Keyword(s):  
New Species ◽  
New Genus ◽  
New Genera ◽  
Monotypic Genus ◽  
Preliminary Study ◽  
The One ◽  
One New Species

Following the itemization of the described Madagascan Coraebini (Buprestidae: Agrilinae) (Bellamy 2001a), additional new genera and species of this large fauna have been described (Bellamy 2001b, 2003, 2006). After a preliminary study of the perceived ant-mimicking species I have accumulated in loans from, and during previous visits to, the vast collection of this fauna held by the Muséum national d’Histoire naturelle, Paris, a new monotypic myrmecomorphic genus and species is described. All other putative ant-mimicking species amongst previously described and currently available specimens belong to the genus Entomogaster Saunders, 1871. The new genus is described now for the one new species found to not be congeneric with Entomogaster. In deference to the classification for the tribe Coraebini Bedel, 1921 presented by Kubáň, et al. (2001), the genus-group taxon described herein is provisionally placed in the subtribe Toxoscelina Majer, in Kubáň, et al., 2001.

Late Ordovician and Silurian lichid trilobites from northwestern Canada: Hemiarges, Borealarges, and Richterarges

2007 ◽  
Vol 81 (6) ◽  
pp. 1348-1364 ◽  
Author(s):  
Margaret J. Campbell ◽  
Brian D. E. Chatterton
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Northwest Territories ◽  
Late Ordovician ◽  
The Arctic ◽  
Mackenzie Mountains ◽  
One New Species

Four new species of Borealarges, B. fritillus, B. patulus, B. renodis, and B. variabilis, and one new species of Richterarges, R. facetus, are described and one unnamed species, Borealarges sp., discussed. All are from the Wenlock strata of Avalanche Lake sections in the Mackenzie Mountains, Northwest Territories. Borealarges tuckerae Adrain, 1994, the only species reported from both the Arctic and the Mackenzie Mountains, is discussed. Hemiarges avalanchensis n. sp., an Ashgill species from Avalanche Lake section AV 4B just below the Ordovician-Silurian boundary, is described. A phylogenetic analysis based on 14 species of Borealarges, three of Richterarges, and two of Hemiarges, demonstrates that the former two genera are three separate and distinct taxa. Borealarges, a genus that includes some species formerly assigned to Richterarges or Hemiarges, is monophyletic, contains a well-supported internal clade of species, and is not separated into senso stricto and senso lato groupings.

New genera of Psocoptera (Insecta), from Mexico, Belize and Ecuador (Psoquillidae, Ptiloneuridae, Lachesillidae)

Zootaxa ◽  
2006 ◽  
Vol 1319 (1) ◽  
pp. 1 ◽  
Author(s):  
ALFONSO N. GARCÍA ALDRETE
Keyword(s):  
New Species ◽  
New Genera ◽  
Monotypic Genus

Four new species of Psocoptera are described, each in a new monotypic genus: Rhyopsocoides typhicolus (Psoquillidae) and Omilneura circumvittata (Ptiloneuridae) from Mexico, Belicania cervantesi (Ptiloneuridae) from Belize, and Waoraniella erwini (Lachesillidae) from Ecuador. Relationships within each family are discussed, and keys to the genera in each family are included.

Copepods (Cyclopoida) associated with ascidian hosts: Ascidicolidae, Buproridae, Botryllophilidae, and Enteropsidae, with descriptions of 84 new species

Zootaxa ◽  
2021 ◽  
Vol 4978 (1) ◽  
pp. 1-286
Author(s):  
IL-HOI KIM ◽  
GEOFF A. BOXSHALL
Keyword(s):  
New Species ◽  
Type Species ◽  
Valid Species ◽  
New Genera ◽  
Monotypic Genus ◽  
The Family ◽  
Taxonomic Research ◽  
Single Genus

The Monniot collection of copepods associated with ascidian hosts was built up over several decades of field collecting and taxonomic research on ascidians by Drs Claude & Françoise Monniot (MNHN, Paris). This paper describes a total of 84 new species of copepods collected from ascidian hosts and five new genera are established. Prior to this study the family Ascidicolidae comprised two genera accommodating five valid species; here we add two new genera, Hamistyelicola gen. nov. and Bathycopola gen. nov., and eight new species in total. The family Buproridae comprised a single genus consisting of three species; here we add a new monotypic genus, Buprorides gen. nov. The family Botryllophilidae comprised 68 valid species in seven genera and here we add 45 new species; 13 of Botryllophilus Hesse, 1864, nine of Schizoproctus Aurivillius, 1885, three of Haplostomides Chatton & Harant, 1924, 12 of Haplostoma Chatton & Harant, 1924, seven of Haplostomella Chatton & Harant, 1924 and a single new species of Haplosaccus Chatton & Harant, 1924. The Enteropsidae comprised 42 species in five genera and here we add two new genera, Monnioticopa gen. nov. and Periboia gen. nov., plus a total of 30 new species; 15 of Enterocola van Beneden, 1860, two of Enterocolides Chatton & Harant, 1922, five of Enteropsis C.W.S. Aurivillius, 1885, five of Monnioticopa gen. nov., two of Mychophilus Hesse, 1865, plus the type species of Periboia gen. nov. Generic diagnoses are provided for all genera represented in the collection. A further 13 known species are also reported and brief supplementary descriptive notes or full redescriptions are provided, as appropriate. 

Taxonomy, distribution, and characters of Pre-Oligocene members of the Cantharus group of Pisaniinae (Neogastropoda: Buccinoidea)

2001 ◽  
Vol 75 (2) ◽  
pp. 295-309 ◽  
Author(s):  
Geerat J. Vermeij
Keyword(s):  
New Species ◽  
New Genus ◽  
Middle Eocene ◽  
Late Eocene ◽  
New Genera ◽  
Paris Basin ◽  
Determinate Growth ◽  
One New Species ◽  
Early Late ◽  
A New Species

This paper presents a review of Cretaceous to Eocene genera and species of the Cantharus group of the buccinoidean neogastropod subfamily Pisaniinae, the description of two new genera and one new species, and a nonphylogenetic discussion of character evolution in this group. The new genus Ickarus is introduced for Tritonidea ickei Martin, 1914, from the Nanggulan beds (middle Eocene) of Java, Indonesia. Editharus (type species: Fusus polygonus Lamarck, 1803, middle Eocene of the Paris Basin, France) is a new genus with seven to nine species ranging from the early to late Eocene of Europe. Editharus is unusual in having a labral tooth formed at the angular junction between the adapical and abapical sectors of the outer lip. Editharus angulilabris from the Marinesian (early late Eocene) is a new species from the Paris Basin closely related to E. polygonus. The incidence and expression of several characters has sharply increased in the Cantharus group from the Paleogene to the Neogene. These characters include the presence of lirae (spiral ridges) on the inner side of the outer lip, the presence of a parietal tooth at the adapical end of the inner lip, and determinate growth (as inferred from a unique adult varix). These trends are also exhibited by other Cenozoic gastropod clades.

Description and correlation of Late Ordovician conodonts from the D. ornatus and P. pacificus graptolite zones, Road River Group, northern Yukon Territory

1987 ◽  
Vol 24 (7) ◽  
pp. 1450-1464 ◽  
Author(s):  
Alexander D. McCracken
Keyword(s):  
New Species ◽  
New Genus ◽  
Late Ordovician ◽  
Yukon Territory ◽  
Upper Ordovician ◽  
The Road ◽  
Anticosti Island ◽  
Blackstone River ◽  
A New Species

Upper Ordovician carbonate beds within clastic strata of the Road River Group, northern Yukon Territory, have yielded 403 conodont elements representing 25 species; 19 of these are illustrated. Genera present are Amorphognathus, Belodina, Besselodus, Drepanoistodus, Eocarniodus?, Gamachignathus, Icriodella, Noixodontus, Oulodus, Panderodus s.l., Paroistodus?, Plectodina, Protopanderodus, Pseudobelodina s.l., Scabbardella, Strachanognathus, and Walliserodus. The apparatus of new genus A new species A includes a symmetrical and bifurrowed rastrate element.Sparse conodont faunas from Rock River occur in strata below a level bearing graptolites of the D. ornatus Zone and between this zone and the succeeding P. pacificus Zone. These conodonts have a range of "Trentonian" –Gamachian (upper Caradoc –Hirnantian).The fauna from Blackstone River is from a single bed that is 3 m below the G. persculptus Zone? and 13.7 m above the P. pacificus Zone. Although stratigraphically closer to the former, this fauna may be equivalent to a level within the P. pacificus Zone; the conodonts suggest correlation with the late Richmondian Fauna 12 and the lower G. ensifer Zone of Anticosti Island, Quebec. A similar fauna (G. ensifer Zone) occurs in one horizon within the P. pacificus Zone at upper Peel River. One metre above this is the informal D. cf. D. mirus graptolite biohorizon (P. pacificus Zone).The Blackstone and Peel faunas equate to a level within the Ordovician Anceps bands C and D of the Ordovician–Silurian boundary stratotype at Dob's Linn, Scotland. The interval of Fauna 13 and the Gamachian Stage may correspond to Anceps Band E and the C.? extraordinarius Band (and contiguous strata) at Dob's Linn. The base of the G. ensifer Zone and the higher base of the Gamachian are probably late Rawtheyan.

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