The Oldest Bryozoans: New Evidence From the Late Tremadocian (Early Ordovician) of East Yangtze Gorges in China

2007 ◽  
Vol 81 (6) ◽  
pp. 1308-1326 ◽  
Author(s):  
Feng-Sheng Xia ◽  
Sen-Gui Zhang ◽  
Zong-Zhe Wang
Keyword(s):  
New Species ◽  
North America ◽  
New Genus ◽  
Early Ordovician ◽  
The World ◽  
New Evidence ◽  
New Bryozoans

Previous reports of Cambrian bryozoans have proved not to be bryozoans. No pre-Ordovician bryozoans have been recognized. The oldest unequivocal bryozoans known from North America, Britain, and Russia are evidently of early Arenigian age. New bryozoans recently collected from the Fenxiang Formation in the Daping and Guanzhuangping sections, situated in the area east of the Yangtze Gorges, are described here, including one new genus, Orbiramus, and six new species, Nekhorosheviella nodulifera, N. semisphaerica, Orbiramus normalis, O. ovalis, O. minus, and Prophyllodictya prisca. These are assigned to the Trepostomida, apart from the last species which belongs to the Cryptostomida. The new bryozoans are from the conodont Paltodus deltifer deltifer Zone of the late Tremadocian age, the first three species possibly being present in the P. deltifer pristinus Subzone at the base. Therefore, they are the oldest bryozoans known from anywhere in the world. Extensive reefs resulting from a major regression in the late Tremadocian were dominated by bryozoans in the upper Fenxiang Formation. The bryozoans lived in a shoal environment and accumulated essentially in situ, showing no signs of significant transportation.

scholarly journals Permian millipedes from the Fort Sill fissures of southwestern Oklahoma, with comments on allied taxa and millipedes preserved in karstic environments

2020 ◽  
pp. 1-15
Author(s):  
Joseph T. Hannibal ◽  
William J. May
Keyword(s):  
New Species ◽  
North America ◽  
Relative Abundance ◽  
New Genus ◽  
Karst Cave ◽  
Early Permian ◽  
New Genera ◽  
The World ◽  
The Caribbean ◽  
Fossil Vertebrate

Abstract Permian millipedes are rare, especially so considering the relative abundance of millipedes in Carboniferous rocks. We report an early Permian millipede fauna containing three new genera and species of millipedes (Oklahomasoma richardsspurense new genus new species, Karstiulus fortsillensis new genus new species, and Dolesea subtila new genus new species) found in fossil-producing pockets of the Fort Sill fissures exposed in the Dolese Quarry near Richards Spur, southwest Oklahoma, USA. These are the first new genera of invertebrates to be described from this site, one of the most prolific fossil-vertebrate sites in the world. We also comment on taxa with morphological similarities and note previously described occurrences of Permian millipedes as well as occurrences of fossil myriapods (millipedes and centipedes) in karst deposits (caves and fissure fills) in Europe, Africa, Asia, North America, and the Caribbean. In contrast with the forms found at Richards Spur, most of these previous accounts of millipedes found in caves and fissure fills are of Pleistocene forms that are closely allied to modern taxa. The taxa from Richards Spur bear some similarities to Pennsylvanian forms. Karst (cave and fissure) faunas should be ranked with concretion faunas, cannel coals, and amber faunas as a major source of fossil myriapods. UUID: http://zoobank.org/5d58e1fb-4e5b-4597-9cd9-5cc9e2096b4d

scholarly journals Two new Paleozoic Asteroidea (Echinodermata) and their taxonomic and evolutionary significance

2018 ◽  
Vol 93 (1) ◽  
pp. 105-114 ◽  
Author(s):  
Daniel B. Blake ◽  
Joseph Koniecki
Keyword(s):  
New Species ◽  
North America ◽  
Type Species ◽  
New Genus ◽  
Small Sample ◽  
Evolutionary Significance ◽  
Eastern North America ◽  
New Genus And Species ◽  
Early Ordovician ◽  
Small Sample Sizes

AbstractSertulaster keslinginew genus new species (Palaeasteridae) andDelicaster hotchkissinew species (Permasteridae) are asteroid echinoderms described, respectively, from the Ordovician and Carboniferous of eastern North America. The new genus and species help to document diversity within taxa of lower rank.S. keslingiis similar to the Early OrdovicianEriasterBlake and Guensburg, 2005 but exhibits less differentiation of the skeletal elements from beyond the ambulacral column, that of the so-called extraxial skeleton, whereas the comparatively robust construction ofDelicaster hotchkissiclearly departs from that of the type species,D. enigmaticus(Kesling, 1967). Small sample sizes and incomplete exposure of available specimens illustrate ambiguities typically encountered in the study of fossil asteroids.UUID:http://zoobank.org/fb44075c-396b-4f95-b997-29cdf3c4f3c1

scholarly journals IV.—Descriptions of New Species and of a New Genus of Polyzoa from the Palæozoic Rocks of North America

1875 ◽  
Vol 2 (1) ◽  
pp. 33-38 ◽  
Author(s):  
H. Alleyne Nicholson
Keyword(s):  
New Species ◽  
North America ◽  
New Genus ◽  
Convex Surfaces ◽  
Cylindrical Tubes

Polyzoary (?) forming a simple, flattened, unbranehed, two-edged frond, with sub-parallel sides, consisting of two series of cells, the bases of which rest upon opposite sides of a thin longitudinally-striated central membrane or laminar axis, from which they pass obliquely outwards in opposite directions. The cells open in longitudinal rows on the two flat or slightly convex surfaces of the frond, and have the form of more or less cylindrical tubes, which are septate or are divided transversely by a series of well-developed tabulæ. In the only species known the cells of a few of the median rows of the frond are straight, but those of the lateral rows are oblique. Cell-mouths unknown.

A new genus of Veliinae and descriptions of new Oriental species of the subfamily (Hemiptera: Veliidae).

1981 ◽  
Vol 12 (3) ◽  
pp. 339-356 ◽  
Author(s):  
N. Møller Andersen
Keyword(s):  
Hong Kong ◽  
New Species ◽  
Type Species ◽  
New Genus ◽  
Border Zone ◽  
Oriental Region ◽  
The World ◽  
Three New Species

AbstractAngilovelia n.gen. is described with Velia y-alba Paiva, 1918, from Burma as type-species and only included species. It has stridulatory devices similar to those found in species of the Neotropical genus Stridulivelia Hungerford. Three new species of Angilia Stål subgenus Adriennella Poisson are described, A. orientalis n.sp. (Thailand, Hong Kong), A. bispinosa n.sp. (Thailand), and A. trispinosa n.sp. (Malayan Peninsula?). The Palaearctic genus Velia Latreille reaches the border zone between this region and the Oriental region. V. (Plesiovelia) affinis Kolenati ssp. marussii Tamanini, described from Hindukush (Afghanistan, Pakistan), is here recorded from Kashmir (India) and the first species of the genus is described from China, V. (Haldwania) sinensis n.sp. A key is given to the genera and subgenera of Veliinae of the world.

Two Ordovician asterozoans (Echinodermata) of problematic affinities

2014 ◽  
Vol 88 (6) ◽  
pp. 1163-1173 ◽  
Author(s):  
Daniel B. Blake
Keyword(s):  
New Species ◽  
New Genus ◽  
Early Period ◽  
Early Ordovician ◽  
Class Level ◽  
The Family ◽  
Evolutionary Radiation ◽  
Frame Construction

Phragmactis grayaeSpencer andSwataria derstlerinew genus new species are early (Ordovician) asterozoans (Echinodermata) that comprise the Phragmactinidae. Asterozoans are complexly varied, but as is true for other echinoderms, ambulacral construction is critical to interpretation. Phragmactinids share plesiomorphic aspects of ambulacral form and articulation with basal somasteroids and stenuroids whereas the apomorphic ambulacral expressions of asteroids and ophiuroids are lacking. Phragmactinids, like asteroids and ophiuroids, have only one virgal-series ossicle associated with each ambulacral, unlike the multiple ossicles of somasteroids and stenuroids. Virgal morphology of phragmactinids is reminiscent of expressions in somasteroids and stenuroids. Aspects of phragmactinid mouth frame construction are apomorphic. Morphologies of other ossicular series are similarly varied, and as a result, the family cannot be easily fitted into a recently proposed class-level taxonomy of early asterozoans; it is left in open nomenclature. Phragmactinid morphology does not indicate behavior significantly different from that of other early asterozaons. Asterozoan diversity suggests an early period of rapid evolutionary radiation.

New Monoplacophora (Mollusca) from Late Cambrian and Early Ordovician of Missouri

1986 ◽  
Vol 60 (3) ◽  
pp. 606-626 ◽  
Author(s):  
Bruce L. Stinchcomb
Keyword(s):  
New Species ◽  
New Genus ◽  
New Genera ◽  
New Genus And Species ◽  
Upper Cambrian ◽  
Early Ordovician ◽  
New Family ◽  
Late Cambrian ◽  
Lower Ordovician ◽  
A New Species

Fourteen new species and six new genera of the molluscan class Monoplacophora are described from the Upper Cambrian Potosi and Eminence formations and the Lower Ordovician Gasconade Formation of the Ozark Uplift of Missouri and some new biostratigraphic horizons are introduced. A new superfamily, the Hypseloconellacea nom. trans. Knight, 1956, and a new family, the Shelbyoceridae, are named. The genus Proplina is represented by five new species: P. inflatus, P. suttoni from the Cambrian Potosi Formation, P. arcua from the Cambrian Eminence Formation and P. meramecensis and P. sibeliusi from the Lower Ordovician Gasconade Formation. A new genus and species in the subfamily Proplininae, Ozarkplina meramecensis, is described from the Upper Cambrian Eminence Formation. Four new monoplacophoran genera in the superfamily Hypseloconellacea and their species are described, including: Cambrioconus expansus, Orthoconus striatus, Cornuella parva from the Eminence Formation, and Gasconadeoconus ponderosa, G. waynesvillensis, G. expansus from the Gasconade Formation. A new genus in the new family Shelbyoceridae, Archeoconus missourensis, is described from the Eminence Formation and a new species of Shelbyoceras, S. bigpineyensis, is described from the Gasconade Formation.

scholarly journals A NEW GENUS OF APHELININÆ FROM CHILE

1900 ◽  
Vol 32 (6) ◽  
pp. 167-168 ◽  
Author(s):  
L. O. Howard
Keyword(s):  
North America ◽  
World Wide ◽  
New Genus ◽  
Scale Insects ◽  
New Genera ◽  
Department Of Agriculture ◽  
Parasitic Hymenoptera ◽  
The World

Since the publication of the writer's “Revision of the Aphelininæ of North America” (Bulletin 1, Technical Series, U. S. Department of Agriculture, Division of Entomology, 1895), the discovery of new forms, and especially of new genera, has been of very infrequent occurence. Species have been received from all parts of the world, owing to the extraordinary and world-wide development of interest in scale insects, which are the principal hosts of the Aphelininæ, yet nearly all of the forms thus received have been species already described, which have been carried with their hosts upon live plants to many different regions. It is, therefore, interesting to discover a new genus, even from a country like Chile, whose parasitic Hymenoptera are so little known. A most interesting feature of the discovery is that the new genus was reared from Aspidiotus hederœ (nerii) together with three of the cosmopolitan forms, namely, Aspidiotiphagus citrinus (Craw); Coccophagus immaculatus, How., and Prospalta aurantii, How. The writer is indebted to Mr. Edwyn C. Reed, of Rancagua, Chile, for this sending, as well as for many other favours.

Kochiella Poulsen, 1927, and Hadrocephalites new genus (Trilobita: Ptychopariida) from the early Middle Cambrian of western North America

2002 ◽  
Vol 76 (1) ◽  
pp. 76-94 ◽  
Author(s):  
Frederick A. Sundberg ◽  
Linda B. McCollum
Keyword(s):  
New Species ◽  
North America ◽  
New Genus ◽  
Western North America ◽  
Type Specimens ◽  
Middle Cambrian ◽  
Informal Group ◽  
Nomen Dubium

Kochaspids are an informal group of ptychopariid trilobites that were both abundant and widespread in the early Middle Cambrian of North America. Based on the reassociation of pygidia and cranidia of some kochaspids, Kochiella Poulsen, 1927, is redefined and Hadrocephalites n. gen. is proposed. Hadrocephalites includes taxa previously assigned by Rasetti and Palmer to Schistometopus Resser, 1938a. Schistometopus is considered nomen dubium. Representatives of Kochiella and Hadrocephalites from the Pioche Shale and Carrara Formation of Nevada are described, including the new species Kochiella rasettii, K. brevaspis, Hadrocephalites lyndonensis, and H. rhytidodes. Other kochaspids previously assigned to Kochaspis Resser, 1935; Eiffelaspis Chang, 1963; Schistometopus; and Kochiella are discussed and some are reassigned. The type specimens of Kochiella augusta (Walcott, 1886); K. crito (Walcott, 1917b); K. chares (Walcott, 1917a); K. mansfieldi Resser, 1939; K. arenosa Resser, 1939; Hadrocephalites carina (Walcott, 1917b), and H. cecinna (Walcott, 1917b) are re-illustrated.

Early Ordovician mitrates and a possible solute (Echinodermata) from the western United States

2012 ◽  
Vol 86 (4) ◽  
pp. 595-604 ◽  
Author(s):  
Colin D. Sumrall ◽  
James Sprinkle ◽  
Thomas E. Guensburg ◽  
Benjamin F. Dattilo
Keyword(s):  
United States ◽  
New Species ◽  
New Genus ◽  
Western United States ◽  
Early Ordovician ◽  
West Texas ◽  
Southern Nevada

Two new kirkocystid mitrate stylophorans (Echinodermata, Homalozoa) and a new possible solute (Echinodermata, Homalozoa) are described from the Early Ordovician of the western United States. The mitrates are among the earliest members of their clade to appear near the beginning of the Ordovician Radiation. Anatifopsis ninemilensis new species comes from the Ninemile Shale in central Nevada and the McKelligon Canyon Formation in west Texas. Anatifopsis fillmorensis new species comes from the middle Fillmore Formation in western Utah and a Ninemile Shale equivalent limestone bed in southern Nevada. The possible solute Drepanocystis dubius new genus new species from the lower Wah Wah Limestone in western Utah, shows unusual morphology with an elongate theca and a long arm shaped like a sickle.

Trichomycete gut fungi in New Zealand aquatic insect larvae

1990 ◽  
Vol 68 (5) ◽  
pp. 1045-1056 ◽  
Author(s):  
Marvin C. Williams ◽  
Robert W. Lichtwardt
Keyword(s):  
New Species ◽  
New Zealand ◽  
New Genus ◽  
Aquatic Insect ◽  
The Other ◽  
Insect Larvae ◽  
Widespread Species ◽  
The World ◽  
Chironomidae Larvae ◽  
Aquatic Insect Larvae

New Zealand, like other regions of the world, has now been shown to have a diverse and rich assortment of Trichomycetes (Zygomycotina). Seven of the 14 species of Harpellales we found in aquatic insect larvae are known from other land areas. The remaining seven species, consisting of six Harpellales and one Amoebidiales, are new and possibly endemic. A new genus, Austrosmittium, from Chironomidae larvae is established, with two species, A. kiwiorum and A. norinsulare. The other new species are Glotzia plecopterorum (in Plecoptera), Paramoebidium bibrachium (Amoebidiales, in Ephemeroptera), Pennella asymmetrica (in Simuliidae), and Smittium rarum and Stachylina minima (in Chironomidae). All of the new species were found either on North Island or South Island, but not both. We also report the presence on South Island of two widespread species of marine trichomycetes (Eccrinales), Enteromyces callianassae and Taeniella carcini, in anomuran and brachyuran crustaceans.

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