Peonza: new gastropod genus from the middle Tertiary of Patagonia and Chile

1994 ◽  
Vol 68 (2) ◽  
pp. 279-286 ◽  
Author(s):  
Amalia M. Olivera ◽  
William J. Zinsmeister ◽  
S. Graciela Parma
Keyword(s):  
New Species ◽  
Temporal Distribution ◽  
Late Eocene ◽  
Tierra Del Fuego ◽  
Early Miocene ◽  
Late Oligocene ◽  
Southern Chile ◽  
Santa Cruz ◽  
Two New Species

A new Tertiary gastropod genus, Peonza n. gen., is described, along with two new species, P. torquata from southern Argentina and P. benjamina from southern Chile. These muricacean gastropods, of uncertain familial status, occur in the late Eocene San Julián Formation and in the late Oligocene to early Miocene? Monte León Formation, Santa Cruz Province, Argentina. They also were recorded in the (probably) Oligocene Magellanian beds in Tierra del Fuego, Argentina, and in early Miocene deposits of the Tres Montes region in the Chilean Canals. In spite of the small number of specimens, Peonza n. gen. seems to have had a wide geographic and temporal distribution.

Taxonomic status of some species of Aspidostomatidae (Bryozoa, Cheilostomata) from the Oligocene and Miocene of Patagonia (Argentina)

2018 ◽  
Vol 92 (3) ◽  
pp. 432-441 ◽  
Author(s):  
Leandro M. Pérez ◽  
Juan López-Gappa ◽  
Miguel Griffin
Keyword(s):  
New Species ◽  
Fossil Record ◽  
Type Species ◽  
Middle Miocene ◽  
Taxonomic Status ◽  
Early Miocene ◽  
New Combination ◽  
Late Oligocene ◽  
Santa Cruz ◽  
New Material

AbstractThe bryozoan genus Aspidostoma Hincks, 1881 has been regarded as the only representative of the Aspidostomatidae Jullien, 1888 in Argentina to date. Its type species, Aspidostoma giganteum (Busk, 1854), is presently distributed in the Magellanic Region (Argentina and Chile) and has been recorded in Oligocene and Miocene fossil deposits of Santa Cruz and Chubut, respectively. New material from San Julián (late Oligocene), Monte León (early Miocene), Chenque (early to middle Miocene), and Puerto Madryn (late Miocene) formations suggests, however, that A. giganteum is not represented in the fossil record. Material from Puerto Madryn Formation previously regarded as A. giganteum is here recognized as Aspidostoma roveretoi new species. Aspidostoma ortmanni Canu, 1904 is revalidated for the species from the San Julián Formation. Aspidostoma armatum new species and Aspidostoma tehuelche new species are introduced for material from the Monte León and Chenque formations, respectively. Aspidostoma incrustans Canu, 1908, from the early Miocene, is redescribed. Melychocella Gordon and Taylor, 1999, which differs from Aspidostoma in having vicarious avicularia and lacking a median ridge and a quadrangular process proximal to the opesia-orifice, is so far represented by three Paleogene species from the Chatham Islands (Southwest Pacific). The material from Monte León allowed us to transfer Aspidostoma flammulum Canu, 1908 to Melychocella, resulting in the new combination Melychocella flammula (Canu, 1908). Melychocella biperforata new species is described from the lower Miocene Monte León and Chenque formations. The presence of Melychocella in the Neogene of Patagonia extends its geographic distribution and its temporal range.UUID: http://zoobank.org/d84df2d8-cab2-4e74-82b8-7c67d938a58f

scholarly journals Two new Early Cretaceous dinocyst species from the Central North Sea Basin

2002 ◽  
Vol 21 (1) ◽  
pp. 75-80 ◽  
Author(s):  
S. Duxbury
Keyword(s):  
New Species ◽  
North Sea ◽  
Early Cretaceous ◽  
Lower Cretaceous ◽  
Early Miocene ◽  
Late Oligocene ◽  
Two New Species ◽  
Central North Sea

Abstract. Two new species of dinocyst, Cerbia monilis and Hapsocysta susanae are described from the Lower Cretaceous of the Central North Sea Basin. The first ranges across the Aptian/Albian boundary and the latter is restricted to the Early to Middle Albian interval; both are valuable index taxa in this area. Hapsocysta susanae is remarkably similar to cysts ‘without walls’ described from the Late Oligocene and Early Miocene, and detailed comparisons are made. The ranges of the two species described here are illustrated against regional lithostratigraphic and biostratigraphic schemes.

scholarly journals New Genus and Species of Gall Midges (Diptera, Cecidomyiidae, Porricondylinae, Holoneurini) from the Late Eocene Amber of Olevsk (Zhitomir Region, Ukraine)

2017 ◽  
Vol 51 (1) ◽  
pp. 23-30 ◽  
Author(s):  
Z. A. Fedotova ◽  
E. E. Perkovsky
Keyword(s):  
New Species ◽  
New Genus ◽  
Late Eocene ◽  
Rovno Amber ◽  
New Genus And Species ◽  
Gall Midges ◽  
Two New Species ◽  
First Time ◽  
Eocene Amber

Abstract Gall midges are reported for the first time in Late Eocene Rovno amber from the Olevsk, Zhitomir Region. This is the second amber locality to yield gall midges in the Zhitomir Region, after Gulyanka. Rovnoholoneurus gen. n. and two new species, Rovnoholoneurus davidi sp. n. and R. miyae sp. n. are described. Bryocrypta laqueata Fedotova, 2005 is transferred to the genus Rovnoholoneurus, and Rovnoholoneurus laqueatus (Fedotova, 2005), comb. n. is established. A key to the species of Rovnoholoneurus is provided.

Modiomytilus, a new mytilid bivalve from the Tertiary of southern Patagonia

1990 ◽  
Vol 64 (3) ◽  
pp. 377-382 ◽  
Author(s):  
Miguel Griffin
Keyword(s):  
New Species ◽  
Adductor Muscle ◽  
New Taxon ◽  
Santa Cruz ◽  
Southern Patagonia ◽  
Two New Species

Modiomytilus n. gen. is described from Tertiary sediments exposed in the southwestern corner of Santa Cruz province (Argentina). This large mytilid is characterized by its ornamentation of strong comarginal undulations, its smooth ligamentary ridge, and its relatively large anterior adductor muscle. Two new species are assigned to it: Modiomytilus argentinensis n. sp., from the Centinela Formation (Miocene) south of Lago Argentino, and Modiomytilus mercerati n. sp., from the Río Turbio Formation (Eocene) in Sierra Dorotea. Although other species belonging to this new taxon and previously referred to Mytilus have been described from Tertiary sediments in the region, none are known so far from rocks of comparable age outside Patagonia.

Anthracotheres from Wadi Moghra, Early Miocene, Egypt

2014 ◽  
Vol 88 (5) ◽  
pp. 967-981 ◽  
Author(s):  
Ellen R. Miller ◽  
Gregg F. Gunnell ◽  
Mohamed Abdel Gawad ◽  
Mohamed Hamdan ◽  
Ahmed N. El-Barkooky ◽  
...  
Keyword(s):  
New Species ◽  
New Genus ◽  
Early Miocene ◽  
New Genus And Species ◽  
Systematic Revision ◽  
Recent Immigrants ◽  
Two New Species

The early Miocene site of Wadi Moghra, Qattara Depression, Egypt, is important for interpreting anthracothere (Mammalia, Artiodactyla) evolution, because the Moghra sediments preserve a higher diversity of anthracotheres than any other pene-contemporaneous site. New specimens from Moghra are described and form the basis for the systematic revision of Moghra anthracotheres provided here. Among the important discoveries recently made at Moghra is the first complete skull of Sivameryx moneyi. Other new specimens described here include two new species of Afromeryx, and a new genus and species, all of which are unique to Moghra. A review of biogeographic information supports the conclusion that three of the Moghra anthracotheres (Brachyodus depereti, B. mogharensis, and Jaggermeryx naida, n. gen. n. sp.) are members of late surviving lineages with a long history in Africa, while three other species (Afromeryx grex, n. sp., A. palustris, n. sp., and Sivameryx moneyi) represent more recent immigrants from Eurasia.

Two new species of Psolus Oken from Brazil (Holothuroidea: Psolidae), with neotype designation and redescription of Psolus vitoriae Tommasi, 1971, and a key to the southwestern Atlantic and Magellanic species

Zootaxa ◽  
2019 ◽  
Vol 4563 (3) ◽  
pp. 531 ◽  
Author(s):  
LUCIANA MARTINS ◽  
MARCOS TAVARES
Keyword(s):  
New Species ◽  
New Zealand ◽  
Variable Number ◽  
Tierra Del Fuego ◽  
Southwestern Atlantic ◽  
Perforated Plates ◽  
Macquarie Island ◽  
Strait Of Magellan ◽  
Two New Species ◽  
Calcareous Ring

The taxonomy of the southeastern Brazilian species of Psolus is reviewed and two new species described. Additionally, P. vitoriae is redescribed based on a newly designated neotype and supplemental material from the type locality and nearby regions. The synonymy of P. marcusi with P. patagonicus is called into question. The calcareous ring is useful for distinguishing between some Psolus species. Psolus tommasi sp. nov. is characterized by having five oral valves, an anus covered by a variable number of small, irregular anal valves, oral and anal valves distinct from body wall scales, calcareous ring interradial plates entire, calcareous ring simple, without posterior processes; radial and interradial plates entire, dorsal ossicles spheroid bodies and sole ossicles knobbed and smooth perforated plates. Psolus thandari sp. nov. is characterized by granules on body scales; mouth surrounded by five to seven triangular valves of equal size; anus surrounded by a variable number of small and irregular anal valves that grade into surrounding scales; calcareous ring with interradial plates entire. Six species of Psolus are known from the southwestern Atlantic and Magellanic region: P. vitoriae (São Paulo, Brazil); P. patagonicus (Mar del Plata to Tierra del Fuego, Argentina; Strait of Magellan and Cape Horn); P. segregatus (Patagonia, Argentina; Strait of Magellan, Chile; Hikurangi Margin and Chatham Rise, New Zealand); P. antarcticus (Magellanic region; South Georgia Island, southern Atlantic Ocean; Macquarie Island and Ridge, New Zealand); P. lawrencei (Mar del Plata, Argentina) and Psolus murrayi Théel, 1886 (Montevideo, Uruguay). A key to the species of Psolus from the southwestern Atlantic and Magellanic region, and a synoptic table to all southern Atlantic Psolus species is provided. 

Distribution of Diplolaimella and Diplolaimelloides species from Patagonian lagoons and coastal waters (Nematoda: Monhysteridae), Chubut and Santa Cruz provinces (Argentina)

2009 ◽  
Vol 89 (4) ◽  
pp. 711-718 ◽  
Author(s):  
Catalina T. Pastor de Ward ◽  
Virginia Lo Russo
Keyword(s):  
New Species ◽  
Coastal Waters ◽  
East Coast ◽  
Santa Cruz ◽  
Coastal Salt Marsh ◽  
Salty Water ◽  
The Family ◽  
Two New Species ◽  
New Localities ◽  
First Time

This paper focuses on Diplolaimella and Diplolaimelloides two very cosmopolitan genera inhabiting lotic freshwater to salty water inland, groundwater and coastal waters systems, providing a review of their taxonomy with new keys, and their distribution on the east coast of Patagonia and inland Patagonia. Two new species belonging to the genus Diplolaimelloides of the family Monhysteridae are described from Patagonian salty lagoons and coastal areas, and the Chubut and Santa Cruz provinces of Argentina: Diplolaimelloides tehuelchus sp. nov. has four bursal and three postcloacal papillae, short gubernaculum, and spicules longer than 50 μm; it has been found in Patagonian salty lagoons and in high coastal salt marsh areas. Diplolaimelloides warwicki sp. nov. is characterized by the angular shape of the spicules and the long gubernaculum. Diplolaimella ocellata is recorded for the first time in Patagonian salty lagoons and new localities in coastal waters are recorded for Diplolaimella gerlachi Pastor de Ward, 1984.

The genus Acellomyia González, a new taxonomic arrangement of its species and descriptions of a new genus and two new species from southern South America (Diptera: Tabanidae: Diachlorini)

Zootaxa ◽  
2017 ◽  
Vol 4337 (4) ◽  
pp. 523
Author(s):  
CHRISTIAN R. GONZÁLEZ
Keyword(s):  
Species Richness ◽  
New Species ◽  
South America ◽  
New Genus ◽  
Morphological Diversity ◽  
Southern Chile ◽  
Key To Species ◽  
Southern South America ◽  
Two New Species ◽  
Morphological Differences

The tabanid tribe Diachlorini (Diptera) is the most genus-rich tribe in the Tabanidae; the tribe is cosmopolitan, but the greatest species richness and morphological diversity are found in the Australasian and Neotropical Regions. A new arrangement for the species of Acellomyia González is given; Acellomyia lauta (Hine) is transferred to a new genus, Montismyia gen.n., based on its morphological differences from Acellomyia and geographical distribution. The morphological differences between Acellomyia and Montismyia gen. n. are discussed. Two new species, Acellomyia casablanca sp.n. and Acellomyia puyehue sp.n., are described from specimens collected in southern Chile. Comparison of the morphology of Acellomyia paulseni mapuche (Coscarón & Philip) stat.nov. indicate that they should be elevated to species rank. A key to species of Acellomyia is provided and diagnostic characters are illustrated. 

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