Early Ordovician Trilobites from the Nazareno Area, Northwestern Argentina

2014 ◽  
Vol 88 (5) ◽  
pp. 925-947 ◽  
Author(s):  
M. Franco Tortello ◽  
Susana B. Esteban
Keyword(s):  
New Species ◽  
Shallow Water ◽  
High Energy ◽  
Northwestern Argentina ◽  
Early Ordovician ◽  
First Time

The upper part of the Santa Rosita Formation (Ordovician, Tremadocian) in the Nazareno area, Cordillera Oriental, northwestern Argentina, records the vertical passage of high-energy, shallow water platform environments to offshore settings. Eighteen trilobite species are described from this locality for the first time. Although the taxa from the lower part of the succession (Leptoplastidessp.,Asaphellussp.) are scarce and non-age diagnostic, those from the upper part include diverse assemblages partially assigned to the late TremadocianNotopeltis orthometopaZone. Systematic descriptions of several species (Geragnostus nesossiiHarrington and Leanza,G. callaveiformisHarrington and Leanza,Asaphellus jujuanusHarrington,Notopeltis orthometopa[Harrington],Mekynophrys nannaHarrington,Ceratopyge forficuloidesHarrington and Leanza,Apatokephalus tibicenPřibyl and Vanĕk) are improved, the genusNileusDalman (includingN. australisn. sp.) is first reported from the Tremadocian of western Gondwana, and new species ofAsaphellusCallaway (A. nazarenensisn. sp.),ConophrysCallaway, andApatokephalusBrøgger are described. The trilobites have their closest affinities with faunas from Norway and Sweden.Notopeltis orthometopaandMekynophrys nannaare restricted to the uppermost part of the succession, well above the first records of most other trilobites recognized.

Additional Mollusca (Bivalvia and Rostroconchia) from the Suri Formation, Early Ordovician (Arenig), western Argentina

1997 ◽  
Vol 71 (6) ◽  
pp. 1046-1054 ◽  
Author(s):  
Teresa M. Sánchez
Keyword(s):  
New Species ◽  
New Taxa ◽  
New Genus ◽  
Bivalve Molluscs ◽  
Northwestern Argentina ◽  
Early Ordovician ◽  
First Time

The bivalve molluscs Colpomya? sp. and Goniophorina (Cosmogoniophorina)? tenuicostata Harrington are recorded for the first time in the Arenigian Suri Formation (Famatina Range, western Argentina), and the new taxa Suria ovalis new genus and new species, and Redonia riojana new species are proposed. Additionally, the rostroconchid Ribeiria spinosa Babin and Branisa is also described. Some taxa shared with the Acoite Formation (Cordillera Oriental, Northwestern Argentina) and the Sella Formation (Cordillera Oriental, Bolivia) suggest that the Suri Formation was geographically related to these basins, and consequently, it could likewise be considered as a peri-Gondwanan area.

Synopsis of the Genus Pentacalia (Compositae, Senecioneae) in Bolivia

2021 ◽  
Vol 106 ◽  
pp. 340-371
Author(s):  
Joel Calvo
Keyword(s):  
New Species ◽  
Species Diversity ◽  
Woody Plants ◽  
Montane Forests ◽  
Southern Mexico ◽  
Northwestern Argentina ◽  
Distribution Maps ◽  
Ray Florets ◽  
First Time ◽  
Subsequent Addition

The Neotropical genus Pentacalia Cass. (Compositae, Senecioneae) is distributed from southern Mexico to northwestern Argentina, plus two disjunct species that thrive in Brazil. Most species diversity occurs in the montane forests of Colombia, Ecuador, and Peru. It comprises scandent woody plants characterized by displaying alternate leaves (opposite in three species), involucres with supplementary bracts, usually yellow ray florets (when present), sagittate to caudate anther bases, and truncate to obtuse style branches with a crown of sweeping trichomes (sometimes with a tuft of longer trichomes, but not strictly penicillate). The Bolivian species were revised for the first time by Cabrera (1985), who treated the group under Senecio L. sect. Streptothamni Greenm. Because of the subsequent addition of new species and the need of taxonomic arrangements, an updated synopsis of the genus recognizing 18 species is presented. The names P. brittoniana (Hieron.) Cuatrec. and P. miguelii (Cuatrec.) Cuatrec. are synonymized with P. psidiifolia (Rusby) Cuatrec., as well as P. inquisiviensis H. Rob. & Cuatrec. with P. cardenasii (Cuatrec.) Cuatrec. and P. sailapatensis (Cuatrec.) Cuatrec. with P. urubambensis (Cabrera) Cuatrec. Seven names are lectotypified and an epitype is designated for the name P. zongoensis (Cabrera) J. Calvo. The new species P. viburnifolia J. Calvo & A. Fuentes is described. Revised nomenclature, succinct descriptions, taxonomic discussions, lists of specimens examined, and distribution maps are provided for all accepted species, in addition to an identification key. Pictures of living plants are also presented for eight species.

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 Shallow-water phoxocephalid Amphipoda (Crustacea) of Korea

1989 ◽  
Vol 59 (2) ◽  
pp. 97-125 ◽  
Author(s):  
Young Won Jo
Keyword(s):  
New Species ◽  
Shallow Water ◽  
Sandy Beaches ◽  
Male Characters ◽  
First Time

Five new species of phoxocephalid amphipods from sandy beaches in Korea belonging to two genera are described and figured: Mandibulophoxus mai n. sp., M. hongae n. sp., Grandifoxus malipoensis n. sp., G. cuspis n. sp., and G. bangpoensis n. sp. Keys to the known species and diagnoses of the genera are provided. The male characters of the genus Mandibulophoxus are given for the first time, but no male specimens of Grandifoxus were obtained during the present study.

New shallow-water sponges (Porifera) from the Galápagos Islands

Zootaxa ◽  
2021 ◽  
Vol 5012 (1) ◽  
pp. 1-71
Author(s):  
CARINA SIM-SMITH ◽  
CLEVELAND HICKMAN, JR ◽  
MICHELLE KELLY
Keyword(s):  
New Species ◽  
Pacific Ocean ◽  
Shallow Water ◽  
Significant Contribution ◽  
Galapagos Islands ◽  
Eastern Pacific Ocean ◽  
Galápagos Islands ◽  
Scuba Divers ◽  
First Time

Twenty-five new species of shallow-water sponges are described from the Galápagos Islands, a province of Ecuador in the eastern Pacific Ocean. Sponges were photographed in situ and collected by SCUBA divers between 2001 and 2004. New species include: Acanthancora equiformis sp. nov., Acanthella saladinorum sp. nov., Cacospongia hermanorum sp. nov., Cinachyrella solis sp. nov., Ciocalypta bustamanti sp. nov., Clathria (Microciona) stellata sp. nov., Clathrina andreusi sp. nov., Craniella lissi sp. nov., Dragmacidon raeae sp. nov., Dragmacidon hendersoni sp. nov., Haliclona (Haliclona) clairae sp. nov., Haliclona (Haliclona) dianae sp. nov., Haliclona (Reniera) oberi sp. nov., Haliclona (Soestella) spuma sp. nov., Haliclona (Soestella) roslynae sp. nov., Hemimycale harlequinus sp. nov., Hemimycale nathani sp. nov., Higginsia johannae sp. nov., Neopetrosia eructans sp. nov., Leucilla agitata sp. nov., Penares angeli sp. nov., Prosuberites vansoesti sp. nov., Suberea esmerelda sp. nov., Tethya annona sp. nov. and Tethya sorbetus sp. nov. In addition, three species have been recorded for the first time from the Galápagos Islands: Chalinula cf. molitba (De Laubenfels, 1949), Chelonaplysilla violacea (Von Lendenfeld, 1883) and Tedania (Tedania) tropicalis Aguilar-Camacho, Carballo & Cruz-Barraza, 2018. This paper represents a significant contribution to our knowledge of the Porifera of the Galápagos Islands.

Upper Triassic reef fauna from the Quesnel terrane, central British Columbia, Canada

1999 ◽  
Vol 73 (5) ◽  
pp. 787-802 ◽  
Author(s):  
George D. Stanley ◽  
Baba Senowbari-Daryan
Keyword(s):  
British Columbia ◽  
New Species ◽  
Shallow Water ◽  
North American ◽  
Upper Triassic ◽  
Reef Limestone ◽  
Reef Fauna ◽  
First Time

Massive Upper Triassic (Norian) reef limestone at Eaglenest Mountain, Takla Group, British Columbia, contains a wide variety of shallow-water fossils in two different carbonate units. A sponge-coral facies contains the spongesFanthalamia astoma(Seilacher, 1962),Fanthalamia multicanalisnew species,Cinnabaria expansa(Seilacher, 1962), andCinnabaria? sp.Cinnabaria expansais a widely distributed North American terrane species which, along withF. astoma,was previously known from the Luning Formation of Nevada. Also included is the “disjectoporoid,”Pamiropora sonorensisStanley, 1994, and a massive spongiomorph,Spongiomorpha tenuisSmith, 1927, previously endemic to the Eastern Klamath terrane of California. Colonial corals include:Retiophyllia quesneliananew species,Chondrocoenia waltheri(Frech, 1890),Crassistellacf.juvavica(Frech, 1890),Distichomeandracf.austriaca(Frech, 1890), andAlpinophyllia flexuosaRoniewicz, 1989. A limestone conglomerate overlying these beds is dominated almost exclusively by the planktonic hydrozoan,Heterastridium conglobatumReuss, 1865. A problematic taxonLovceniporacf.chaetetiformisVinassa de Regny, 1915, is reported for the first time outside Timor and the Tethys. The faunas provide a first glimpse into the reef biota of the Quesnel terrane. They contain taxa previously known from the distant Tethys but also include endemics from other inboard terranes.

New reports and a new species of Syllidae (Annelida) from Chilean Patagonia

2017 ◽  
Vol 98 (7) ◽  
pp. 1599-1607
Author(s):  
Eulogio H. Soto ◽  
Guillermo San Martín
Keyword(s):  
New Species ◽  
Shallow Water ◽  
Incertae Sedis ◽  
Chilean Patagonia ◽  
First Time ◽  
One New Species ◽  
A New Species

The Syllidae subfamilies Eusyllinae, Anoplosyllinae and Autolytinae, as well as the incertae sedis genera (Aguado et al., 2012), were studied from samples collected in shallow water from fjords and channels in Chilean Patagonia. One new species Paraehlersia kawesqar sp. nov. is described. The genus Nudisyllis Knox & Cameron, 1970 is recorded for the first time for Chile, while the species Brachysyllis infuscata (Ehlers, 1901a) and Syllides japonica Imajima, 1966 are recorded for the first time for continental Chile. Finally, Syllides articulosa Ehlers, 1897 and Epigamia sp. are also reported. The majority of the species were found inside tubes of the polychaete worm Chaetopterus cf. variopedatus (Renier, 1804) – a new habitat for syllid polychaetes. This work is an important contribution to the knowledge of syllids in Chile and to the polychaete fauna of the Patagonian region generally.

Additional shallow-water thecate hydroids (Cnidaria: Hydrozoa) from Guadeloupe and Les Saintes, French Lesser Antilles

Zootaxa ◽  
2010 ◽  
Vol 2570 (1) ◽  
pp. 1 ◽  
Author(s):  
HORIA R. GALEA
Keyword(s):  
New Species ◽  
Species Composition ◽  
Shallow Water ◽  
Related Species ◽  
New Records ◽  
Lesser Antilles ◽  
Additional Species ◽  
The Caribbean ◽  
Les Saintes ◽  
First Time

This report supplements an earlier account on the hydroids of the Guadeloupe archipelago, and records 31 additional species of thecates. Among them, Halecium calderi sp. nov., Antennella armata sp. nov., and Antennella incerta sp. nov., are described. Laomedea tottoni Leloup, 1935 is redescribed and reassigned to the genus Clytia Lamouroux, 1812. Its synonymy is broadened upon inclusion of Clytia laxa Fraser, 1937. Hebella venusta (Allman, 1877) is considered valid based on comparison with related species, and its gonotheca is described for the first time. Two sympatric varieties of Sertularella diaphana (Allman, 1885), easily separable morphologically and by their cnidome composition, are discussed. Sertularella ornata Fraser, 1937 is recorded for the second time and is fully redescribed. Its name is actually a junior synonym of S. fusiformis (Hincks, 1861) f. ornata Broch, 1933, and it is here referred to as S. fraseri nom. nov. Sertularia thecocarpa Jarvis, 1922, Sertularella minuscula Billard, 1924, Sertularella parvula Mammen, 1965, and Sertularia stechowi Hirohito, 1995 are placed in the synonymy of Sertularella tongensis Stechow, 1919, the latter being transferred to the genus Sertularia Linnaeus, 1758. Sertularia ephemera nom. nov. is proposed as a replacement name for Sertularia tongensis Stechow, 1919. Aglaophenia postdentata Billard, 1913 is confidently recorded from the Atlantic for the first time. Dentitheca dendritica (Nutting, 1900) is redescribed, and additional notes on Macrorhynchia clarkei (Nutting, 1900) are provided. All the species discussed herein are new records for the study area. Illustrations are given for each species and data on the nematocyst complement and size of capsules are given when necessary. The number of hydroid species reported from the study area is raised to more than eighty. Hydroids of the Caribbean are moderately well known faunistically, though continuous discovery of new species is likely, the species composition being certainly richer than currently reported.

scholarly journals On some shallow-water Tanaidomorpha (Crustacea: Peracarida: Tanaidacea) of Chilean fjords, with description of a new species of Zeuxoides Sieg, 1980

Zootaxa ◽  
2012 ◽  
Vol 3257 (1) ◽  
pp. 38 ◽  
Author(s):  
PATRICIA ESQUETE ◽  
ROGER BAMBER ◽  
CRISTIAN ALDEA
Keyword(s):  
New Species ◽  
Shallow Water ◽  
Intraspecific Variation ◽  
Beagle Channel ◽  
Magellan Strait ◽  
First Time ◽  
Interspecific And Intraspecific Variation ◽  
Rocky Bottoms ◽  
A New Species

Magellanic tanaidacean faunas have been mainly studied in the Magellan Strait and Beagle Channel, the latter restricted to bot-toms deeper than 40m. As a result, the shallow rocky bottoms of the Magellanic fjords remain largely under-studied, and theirtanaidacean diversity is poorly known. In this study, tanaidacean species sampled from shallow rocky bottoms of Chilean fjordsare investigated, and morphological and taxonomic considerations included. A new species of the Tanaidae, Zeuxoides tronco-soi sp. nov. is described. The genus Leptochelia is recorded for the first time in Chile, and the distribution of Pancoloides lito-ralis is extended northwards. Specimens collected of Pancoloides litoralis and Nototanais dimorphus present morphologicaldifferences with previous descriptions, which are at present attributed to intraspecific variation derived from geographical iso-lation among populations, until sufficient material can be examined to determine what constitutes interspecific and intraspecific variation.

Haplosclerida and Petrosida (Poifera : Demospongiae) from the New Caledonia lagoon

1995 ◽  
Vol 9 (1) ◽  
pp. 149
Author(s):  
J Froman
Keyword(s):  
New Species ◽  
Water Temperature ◽  
Shallow Water ◽  
Deep Water ◽  
Endemic Species ◽  
New Records ◽  
New Caledonia ◽  
Fibre Development ◽  
First Time

Sixteen species of Haplosclerida and Petrosida are described from the reefs and lagoon of New Caledonia. Five species are new and two species are reported for the first time from New Caledonia. Nine previously described species were also found in this study and extra characters are reported, or additional locality and habitat records provided. The new species belong to the Haplosclerida : Chalinidae, three species; Niphatidae, one species; and Callyspongiidae, one species. New records of Xestospongia bergquistia and X. exigua (Petrosida : Petrosidae) are reported. Some of the species described have reduced spiculation; this reduction in amount of silica in the skeleton, and increased fibre development, may be related to water temperature. The proportion of endemic species within the Haplosclerida and Petrosida shallow water fauna is 48% and 75% in deep water. Non-endemic species have closest affinities to the Australian fauna.

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