Reef trilobites from the Formosa Limestone (Lower Devonian) of southern Ontario

1987 ◽  
Vol 24 (4) ◽  
pp. 676-688 ◽  
Author(s):  
Rolf Ludvigsen
Keyword(s):  
North American ◽  
Type Species ◽  
Lower Devonian ◽  
Southern Ontario ◽  
Old World ◽  
Reef Fauna

A reef trilobite fauna of five species from the Formosa Limestone Member of the Amherstburg Formation (Lower Devonian, Emsian) of southern Ontario is strongly dominated by the proetids Crassiproetus and Mannopyge; it also includes the brachymetopid Mystrocephala, the lichid Acanthopyge, and the aulacopleurid Harpidella. This is the first fully documented trilobite fauna from North American Devonian reefs. The proetid-dominated Formosa reef fauna from the Appalachian Province is more similar to Carboniferous reef trilobite faunas than it is to other Devonian reef trilobite faunas from the Old World Province in Europe, Africa, and Australia that are dominated by scutelluids. Crassiproetus Stumm is assigned to the Proetinae; Mannopyge n. gen. (type species, M. halli (Stumm)), to the Warburgellinae.

The trilobite Reedops (Phacopidae) in the Lower Devonian of Argentina (Malvinokaffric Realm)

2012 ◽  
Vol 86 (2) ◽  
pp. 253-257 ◽  
Author(s):  
David J. Holloway ◽  
Juan J. Rustán
Keyword(s):  
Type Species ◽  
Lower Devonian ◽  
Middle Part ◽  
Early Devonian ◽  
Northwestern Argentina ◽  
Old World ◽  
Devonian Age ◽  
La Rioja

The trilobite Reedops is documented from strata probably corresponding to the middle part of the Talacasto Formation in the Sierra de las Minitas, at the northernmost extent of the Precordillera in La Rioja Province, northwestern Argentina. The specimens resemble the type species of the genus, R. bronni, indicating a Pragian (Early Devonian) age for the strata, and suggesting the occurrence at this time of faunal exchange between the Old World Realm, particularly the Bohemian area, and the Malvinokaffric Realm. The taxon represents the first Early Devonian macrofaunal element in the Malvinokaffric Realm with global biostratigraphical significance.

scholarly journals Braquiópodos del Devónico Inferior (Lochkoviense-Praguiense) de la región Cántabro- Celtibérica (España)

2017 ◽  
Vol 35 (35) ◽  
pp. 99
Author(s):  
J. L. García-Alcalde ◽  
Z. A. Herrera
Keyword(s):  
Type Species ◽  
Lower Devonian ◽  
Anterior Commissure ◽  
Old World ◽  
Cordillera Ibérica ◽  
Iberian Chain ◽  
First Time

Resumen: Se estudian varios taxones nuevos de braquiópodos del Devónico inferior (Lochkovien-se-Praguiense) de la región cántabro-celtibérica de la cuenca Iberoarmoricana que contribuyen a apo-yar la existencia y continuidad a lo largo del tiempo de dicha cuenca. Trigonirhynchia palentina n. sp. y T. celtiberica n. sp. son formas de rinconélidos próximas a la especie armoricana T. fallaciosa, y de similar edad que ella, Praguiense inferior. El género Eucharitina, bien conocido en el Dominio paleo-geográfico del Viejo Mundo, se identifica y describe formalmente por primera vez en el área estudiada, donde está representado por tres especies: E. bultyncki n. sp., de la parte alta del Lochkoviense inferior del Guadarrama oriental y E. carlsi n. sp., de la parte baja del Praguiense inferior y E. cf. eucharis, de fines del Praguiense medio, de la Cordillera Ibérica Oriental. Se menciona y figura también material de comparación de la especie armoricana, E. oehlerti. Se propone el nuevo género del Orden Athyri-dida Chopinia, constituido solo por su especie-tipo, C. petercarlsi n. sp., del Lochkoviense superior o del Praguiense inferior de Palencia y Celtiberia. La concha muy transversa, de contorno elíptico, con buen desarrollo del área cardinal y ornamentación de lamelas concéntricas escamosas en Chopinia lo aproxima a la Subfamilia Plicathyridinae, en particular al género Anathyris. Sin embargo, la ausencia de elementos radiales (pliegues y surco ventral) en la concha y la comisura anterior no invaginada po-dría indicar que Chopinia es un tronco ancestral, primitivo, de la subfamilia, cuya ulterior evolución hasta llegar a Anathyris en el Emsiense se desconoce.Palabras clave: Región Cántabro-Celtibérica, Cuenca Iberoarmoricana, Devónico Inferior, bra-quiópodos rinconélidos y atirídidos, Trigonirhynchia, Eucharitina, Chopinia.Abstract: Several new Lower Devonian (Lochkovian-Pragian) brachiopod taxa from the Canta-bro-Celtiberian region of the Ibero-Armorican basin are described and figured. These taxa support the occurrence and continuity of the Iberoarmorican basin along time. Trigonirhynchia palentina n. sp. and T. celtiberica n. sp. are Lower Pragian rhynchonellid species close to the Armorican species T. fallaciosa. The genus Eucharitina, well-known along the paleogeographic Old World Domain, is formally identified and described for the first time in the studied region. There, it is represented by three species, E. bultyncki n. sp. from the upper part of the Lower Lochkovian in Eastern Guadarrama, and E. carlsi n. sp., lowermost Pragian and E. cf. eucharis, middle Pragian of the Eastern Iberian Chain. Comparison material of the Armorican species E. oehlerti are also mentioned and figured. A new Athyrididae genus, Chopinia, constituted only by the type-species C. petercarlsi n. sp. from the upper Lochkovian or the lower Pragian of Palencia and Celtiberia is proposed here. The very transverse elliptical outline, good development of the cardinal area and ornamentation of concentric, squamose growth lamellae, are features close to those of the Subfamily Plicathyridinae, in particular to the genus Anathyris. However, the lack of radial elements (plications and sulci) on the shell, and non-emarginate anterior commissure could indicate that Chopinia was the subfamily ancestor whose further evolution to reach Anathyris in the Emsian remains unknown.Keywords: Cantabro-Celtiberian region, Iberoarmorican basin, Lower Devonian, rhynchonellid and athyridid brachiopods, Trigonirhynchia, Eucharitina, Chopinia.

The North American «Hipparion Datum and implications for the Neogene of the Old World

Geobios ◽  
1981 ◽  
Vol 14 (4) ◽  
pp. 493-524 ◽  
Author(s):  
M.O. Woodburne ◽  
B.J. Macfadden ◽  
M.F. Skinner
Keyword(s):  
North American ◽  
Old World ◽  
The North

scholarly journals Bombus (Pyrobombus) johanseni Sladen, 1919, a valid North American bumble bee species, with a new synonymy and comparisons to other “red-banded” bumble bee species in North America (Hymenoptera, Apidae, Bombini)

ZooKeys ◽  
2020 ◽  
Vol 984 ◽  
pp. 59-81
Author(s):  
Cory S. Sheffield ◽  
Ryan Oram ◽  
Jennifer M. Heron
Keyword(s):  
North America ◽  
North American ◽  
Dna Barcode ◽  
Molecular Data ◽  
The Arctic ◽  
Valid Species ◽  
Bumble Bee ◽  
Widespread Species ◽  
Old World ◽  
Northern Canada

The bumble bee (Hymenoptera, Apidae, Bombini, Bombus Latreille) fauna of the Nearctic and Palearctic regions are considered well known, with a few species occurring in both regions (i.e., with a Holarctic distribution), but much of the Arctic, especially in North America, remains undersampled or unsurveyed. Several bumble bee taxa have been described from northern North America, these considered either valid species or placed into synonymy with other taxa. However, some of these synonymies were made under the assumption of variable hair colour only, without detailed examination of other morphological characters (e.g., male genitalia, hidden sterna), and without the aid of molecular data. Recently, Bombus interacti Martinet, Brasero & Rasmont, 2019 was described from Alaska where it is considered endemic; based on both morphological and molecular data, it was considered a taxon distinct from B. lapponicus (Fabricius, 1793). Bombus interacti was also considered distinct from B. gelidus Cresson, 1878, a taxon from Alaska surmised to be a melanistic form of B. lapponicus sylvicola Kirby, 1837, the North American subspecies (Martinet et al. 2019). Unfortunately, Martinet et al. (2019) did not have DNA barcode sequences (COI) for females of B. interacti, but molecular data for a melanistic female specimen matching the DNA barcode sequence of the holotype of B. interacti have been available in the Barcodes of Life Data System (BOLD) since 2011. Since then, additional specimens have been obtained from across northern North America. Also unfortunate was that B. sylvicola var. johanseni Sladen, 1919, another melanistic taxon described from far northern Canada, was not considered. Bombus johanseni is here recognized as a distinct taxon from B. lapponicus sylvicola Kirby, 1837 (sensuMartinet et al. 2019) in the Nearctic region, showing the closest affinity to B. glacialis Friese, 1902 of the Old World. As the holotype male of B. interacti is genetically identical to material identified here as B. johanseni, it is placed into synonymy. Thus, we consider B. johanseni a widespread species occurring across arctic and subarctic North America in which most females are dark, with rarer pale forms (i.e., “interacti”) occurring in and seemingly restricted to Alaska. In addition to B. johanseni showing molecular affinities to B. glacialis of the Old World, both taxa also inhabit similar habitats in the arctic areas of both Nearctic and Palearctic, respectively. It is also likely that many of the specimens identified as B. lapponicus sylvicola from far northern Canada and Alaska might actually be B. johanseni, so that should be considered for future studies of taxonomy, distribution, and conservation assessment of North American bumble bees.

Revision of Tenticospirifer Tien, 1938, and similar spiriferid brachiopod genera from the Late Devonian (Frasnian) of Eurasia, North America, and Australia

2000 ◽  
Vol 74 (3) ◽  
pp. 444-463 ◽  
Author(s):  
Xueping Ma ◽  
Jed Day
Keyword(s):  
North America ◽  
Sea Level ◽  
South China ◽  
North American ◽  
Type Species ◽  
Western Europe ◽  
Late Devonian ◽  
Carbonate Platforms ◽  
The North ◽  
New Family

The cyrtospiriferid brachiopod genus Tenticospirifer Tien, 1938, is revised based on restudy of the type species from the Frasnian (Late Devonian) of the Russian Platform. As revised the genus includes cyrtospiriferid species with pyramidal ventral valves, catacline ventral interareas, a narrow delthyrium, few sinal plications, and lack a median dorsal septum and pseudodeltidium. All species retained in the genus are of Givetian and Frasnian age. All Famennian age species described from South China and North America are rejected from the genus. It appears that Tenticospirifer evolved during the early Givetian in western Europe and remained endemic to that region during the remainder of the Givetian. Successive migrations of Tenticospirifer from eastern Laurussia to North America, then to South China and possibly Australia, coincided with middle and late Frasnian eustatic sea level rises, respectively. The North American species Spirifera cyrtinaformis Hall and Whitfield, 1872, and related species identified as Tenticospirifer by North American workers, are reassigned to Conispirifer Lyashenko, 1985. Its immigration to and widespread dispersal in carbonate platforms of western Laurussia, northern Gondwana and tropical island arcs (?) coincided with a major late Frasnian eustatic sea level rise. The new family Conispiriferidae is proposed with Conispirifer Lyashenko, 1985, selected as the type genus. The new family also includes the new genus Pyramidaspirifer with Platyrachella alta Fenton and Fenton, 1924, proposed as the type species. The affinity of the new family remains uncertain pending restudy of key genera currently included in the Superfamily Cyrtospiriferoidea. Available data from the Devonian brachiopod literature indicate that species of Pyramidaspirifer are restricted to late Frasnian deposits of central and western North America.

NEW WORLD SPECIES OF CHLORITA, NOTUS, AND FORCIPATA (RHYNCHOTA: HOMOPTERA: CICADELLIDAE: TYPHLOCYBINAE) WITH A NEW TRIBE FORCIPATINI

1998 ◽  
Vol 130 (4) ◽  
pp. 491-507 ◽  
Author(s):  
K.G.A. Hamilton
Keyword(s):  
British Columbia ◽  
New Species ◽  
Type Species ◽  
New World ◽  
Yukon Territory ◽  
Lake Huron ◽  
World Species ◽  
Old World ◽  
New Tribe

AbstractChlorita nearctica is described from the Yukon Territory and is the first member of its genus found in the New World. A synopsis is presented to the Old World species of Chlorita Fieber, 1866 (Typhlocybinae, tribe Empoascini). A new typhlocybine tribe Forcipatini is created for Forcipata DeLong & Caldwell, 1936 and Notus Fieber, 1866. A synopsis of the genus Notus is presented, with Curta as a subgenus containing only the type species. Notus isolatus sp.nov. is described from Drummond Island, Michigan, in Lake Huron and from Quebec. A synopsis of the genus Forcipata DeLong & Caldwell is presented; all species belong to a single subgenus. Five new species are described: F. forficula from Florida, F. ips from Alaska and Yukon, F. montana from the mountains of British Columbia and Montana, and F. unica and F. xlix from Wisconsin. The New World species of the forcipatine genera are keyed.

Ascaridoid nematodes of amphibians and reptiles: Polydelphis, Travassosascaris n.g. and Hexametra

1978 ◽  
Vol 52 (4) ◽  
pp. 355-384 ◽  
Author(s):  
J. F. A. Sprent
Keyword(s):  
Host Range ◽  
Geographical Distribution ◽  
Type Species ◽  
New World ◽  
New Genus ◽  
Old World ◽  
New Name ◽  
Harmful Effects

ABSTRACTThe ascaridoid nematodes with more than two uterine branches, which occur in snakes and lizards, are grouped into three genera: (1) Polydelphis (without interlabia, with four uterine branches) containing the type species, P. anoura, occuring in Old World Pythons, with P. brachycheilos as a species dubium. (2) Travassosascaris, a new genus with interlabia and with four uterine branches, with type species T. araujoi (new name for P. quadrangularis (Schneider) of Araujo, 1969) occuring in New World rattlesnakes. (3) Hexametra, (without interlabia, with six uterine branches) containing species in lizards and snakes. In lizards, H. hexametra (type species), H. applanata, H.angusticaecoides and H. rotundicaudata are tentatively differentiated. In snakes, two Hexametra species are tentatively differentiated: (1) H. boddaertii (with three synonyms) in New World pit vipers and colubrids; (2) H. quadricornis (with twenty-two synonyms) in Old World viperids, elapids and colubrids. The morphology, host range, geographical distribution, development and harmful effects of these species are discussed.

New North American Records for the Old World Psyllid Heterotrioza chenopodii (Reuter) (Hemiptera: Psylloidea: Triozidae) with Biological Observations

2018 ◽  
Vol 120 (1) ◽  
pp. 134-152 ◽  
Author(s):  
David R. Horton ◽  
Eugene Miliczky ◽  
Tamera M. Lewis ◽  
W. Rodney Cooper ◽  
Timothy D. Waters ◽  
...  
Keyword(s):  
North American ◽  
Old World

North American biogeography and taxonomy of Cryptolithus (Trilobita, Ordovician)

1994 ◽  
Vol 68 (4) ◽  
pp. 808-823 ◽  
Author(s):  
Frederick C. Shaw ◽  
Pierre J. Lespérance
Keyword(s):  
North America ◽  
North American ◽  
Type Species ◽  
Time Span ◽  
Eastern North America ◽  
Evolutionary Mechanisms ◽  
Variable Character

Museum and field restudy of Cryptolithus from all known geographic and stratigraphic occurrences in eastern North America shows that the principal variable character in this genus is the number of fringe pit arcs. Because this character varies within populations and even single individuals, it cannot be used to distinguish the earlier, typologically defined species of the genus. Instead, a neotype is designated here for the type species, Cryptolithus tessellatus Green, 1832, and morph designations are used for all pit arc variants. Over the time span considered, the species increased the number of pit arcs, but the ecological and evolutionary mechanisms responsible cannot be identified with certainty.

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