Callochiton monteleonensis n. sp., first record of Polyplacophora (Mollusca) from the Neogene of Argentina

2011 ◽  
Vol 85 (6) ◽  
pp. 1181-1187 ◽  
Author(s):  
Diego Urteaga ◽  
Miguel Griffin ◽  
Guido Pastorino
Keyword(s):  
New Species ◽  
New Zealand ◽  
Central Area ◽  
First Record ◽  
Early Miocene ◽  
Southwestern Atlantic ◽  
Santa Cruz ◽  
Recent Species ◽  
A New Species

A new species of chiton is described from early Miocene deposits of the Monte León Formation, in Santa Cruz Province, Argentina. Callochiton monteleonensis n. sp. clearly differs from known fossil and Recent species of the southwestern Atlantic because the central area of its intermediate valves has a stepped appearance, in which each step is marked by a longitudinal rib. It is similar to Callochiton kapitiensis Mestayer, 1926, a Recent species from New Zealand. Biogeographic implications are discussed. This is the first record of a polyplacophoran from Neogene deposits of Argentina.

Taxonomy of Farrea (Porifera, Hexactinellida, Hexactinosida) from the southwestern Atlantic, with description of a new species and a discussion on the recognition of subspecies in Porifera

2011 ◽  
Vol 89 (3) ◽  
pp. 169-189 ◽  
Author(s):  
D. A. Lopes ◽  
E. Hajdu ◽  
H. M. Reiswig
Keyword(s):  
New Species ◽  
Comparative Analysis ◽  
Video Recording ◽  
First Record ◽  
Historical Overview ◽  
Southwestern Atlantic ◽  
Campos Basin ◽  
Taxonomic Uncertainty ◽  
Coral Banks ◽  
A New Species

The present study reports three species of Farrea Bowerbank, 1862 from Campos Basin (southwestern Atlantic): Farrea herdendorfi Duplessis and Reiswig, 2004, Farrea occa Bowerbank, 1862, and Farrea campossinus sp. nov. This is the first record of F. herdendorfi for the South Atlantic and only the second record of the species worldwide. Farrea occa is described and reported to form mass occurrences in the area’s sponge and coral banks, as seen in extensive video recording undertaken between 900 and 1100 m depth. The new species approaches Farrea foliascens Topsent, 1906 very closely, but differs in that its hooked anchorate clavules are much larger and the meshes of its dictyonal framework rather more irregular. Our thoughts on whether the proposed new species deserved species or subspecies rank led to an investigation on the usage of subspecies rank in Porifera. A historical overview, mainly contrasting Demospongiae and Hexactinellida is offered here. We concluded that no rule of thumb is readily made out from the comparative analysis of various authors’ taxonomic decisions. Until one such agreement is achieved, it appears to us that naming new subspecies should be objectively argued for, or better, totally avoided, as a useless further dimension to taxonomic uncertainty in poriferan classification.

New and little-known bryozoans from Monte León Formation (early Miocene, Argentina) and their paleobiogeographic relationships

2015 ◽  
Vol 89 (6) ◽  
pp. 956-965 ◽  
Author(s):  
Leandro M. Pérez ◽  
Juan López-Gappa ◽  
Miguel Griffin
Keyword(s):  
New Species ◽  
New Zealand ◽  
Close Relationships ◽  
Early Miocene ◽  
South American ◽  
The South ◽  
New Material ◽  
Recent Species ◽  
Stratigraphic Range

AbstractThe bryozoan fauna from the South American Cenozoic is poorly known. The study of new material collected in the Monte León Formation (early Miocene), gave us the opportunity to describe four new species: Valdemunitella canui n. sp., Foveolaria praecursor n. sp., Neothoa reptans n. sp., and Calyptotheca santacruzana n. sp. Two of them (V. canui and C. santacruzana) were first recorded by F. Canu and interpreted as recent species from the Australian bryozoan fauna, but are herein described as new species. The stratigraphic range of Otionella parvula (Canu, 1904) is extended to the early Miocene. The present study emphasizes the close relationships between the South American Neogene bryozoan faunas and those of other Gondwanan sub-continents such as New Zealand and Australia.

First record of the tribe Diglottini from South America with description of Diglotta brasiliensis n. sp. (Coleoptera, Staphylinidae, Aleocharinae)

Zootaxa ◽  
2008 ◽  
Vol 1776 (1) ◽  
pp. 52 ◽  
Author(s):  
EDILSON CARON ◽  
CIBELE STRAMARE RIBEIRO-COSTA
Keyword(s):  
New Species ◽  
New Zealand ◽  
Sexual Dimorphism ◽  
South America ◽  
First Record ◽  
Southern Brazil ◽  
Rove Beetle ◽  
Fiji Islands ◽  
First Time ◽  
A New Species

The tribe Diglottini Eichelbaum, 1909 comprises two halophilous rove beetle genera Diglotta Champion, 1899, and Paradiglotta Ashe & Ahn, 2004. The tribe contains eight known species distributed in the Nearctic and West-Palaearctic regions, and also Fiji Islands and New Zealand. This tribe is recorded for the first time from South America with the description of a new species, Diglotta brasiliensis n. sp. from southern Brazil (Paraná). Characters of the mouthparts, aedeagus and spermatheca of the new species are illustrated and compared with other Diglotta species. Sexual dimorphism is reported for the first time in the genus.

scholarly journals First record and a new species of Euphrosynoplax (Crustacea: Pseudorhombilidae) from the southwestern Atlantic

2021 ◽  
Vol 61 ◽  
pp. e20216166
Author(s):  
Marcos Domingos Siqueira Tavares ◽  
William Ricardo Amâncio Santana
Keyword(s):  
New Species ◽  
Gulf Of Mexico ◽  
Deep Water ◽  
First Record ◽  
Southeastern Brazil ◽  
Southwestern Atlantic ◽  
Brachyuran Crab ◽  
First Time ◽  
A New Species

A new species of deep-water brachyuran crab, Euphrosynoplax dincao, from southeastern Brazil is described and illustrated. The genus Euphrosynoplax currently consists of two species, E. clausa Guinot, 1969, and E. campechiensis Vázquez-Bader & Gracia, 1991, both only known from the Gulf of Mexico. The new species can be easily separated from its northern counterparts by a suite of carapace and appendage characters. Euphrosynoplax campechiensis is recorded for the first time from the Caribbenan Sea (Guadeloupe and between Saint Kitts and Nevis).

Miocene Astelia (Asparagales: Asteliaceae) macrofossils from southern New Zealand

2011 ◽  
Vol 24 (1) ◽  
pp. 19 ◽  
Author(s):  
Elizabeth Maciunas ◽  
John G. Conran ◽  
Jennifer M. Bannister ◽  
Rosemary Paull ◽  
Daphne E. Lee
Keyword(s):  
New Species ◽  
New Zealand ◽  
Morphological Characters ◽  
Early Miocene ◽  
Bootstrap Support ◽  
Individual Species ◽  
Good Opportunity ◽  
Phylogenetic Placement ◽  
A New Species ◽  
Combined Data

The discovery of Early Miocene Asteliaceae fossils at Foulden Maar in southern New Zealand provided a good opportunity to assess the usefulness of cuticular information for identifying members in this family. On the basis of cuticular morphology, the Foulden specimens are assigned to Astelia Banks & Sol. ex R.Br. and described as a new species, A. antiquua Maciunas et al. They are shown to have some affinities with A. alpina, A. linearis and also an apparently unnamed Astelia taxon from southern Westland, New Zealand. Although cuticular characteristics alone were of help in identifying individual species, the addition of gross morphological characters facilitated the differentiation between Asteliaceae genera, greatly improving the phylogenetic placement of the fossil. On the basis of analysis of the combined data, Astelia and Collospermum formed a clade and were sister to a Milligania and Neoastelia clade, albeit with most branches showing little overall bootstrap support.

scholarly journals A new species of Polycoelia (Kallymeniaceae, Rhodophyta), P. kurariirapa, from the Three Kings Islands/Manawatāwhi, New Zealand

2020 ◽  
Author(s):  
R D'Archino ◽  
B Ngauma ◽  
JH Norman ◽  
Giuseppe Zuccarello
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
New Zealand ◽  
New Genus ◽  
Single Layer ◽  
First Record ◽  
Sister Relationship ◽  
Australian Species ◽  
Relationship Of ◽  
A New Species

© 2020, © 2020 International Phycological Society. A new species of Polycoelia, P. kurariirapa, is described from the Three Kings Islands/Manawatāwhi, representing the first record of the genus in New Zealand. Polycoelia includes two species from Australia, P. laciniata (generitype) and P. fastigiata, and one from South Africa, P. harveyana. Polycoelia kurariirapa shares with the two Australian species the characteristic vegetative anatomy of the genus consisting of a single layer of medullary cells surrounded by a cortex of small-celled, anticlinal filaments, and branched thalli. The rbcL phylogenetic analysis confirmed the close, and sister, relationship of P. kurariirapa with the Australian taxa, while they were only weakly grouped with P. harveyana. This new genus adds to the unique seaweed flora of these islands in northern New Zealand and indicates that this area may harbour even more hidden diversity.

Sellaphora mayrii (Bacillariophyceae), a new diatom from the Argentinean Patagonia

Phytotaxa ◽  
2020 ◽  
Vol 437 (3) ◽  
pp. 135-146
Author(s):  
M. LUJÁN GARCÍA ◽  
EDUARDO A. MORALES ◽  
DAVID G. MANN ◽  
NORA I. MAIDANA
Keyword(s):  
Electron Microscopy ◽  
New Species ◽  
Size Range ◽  
Central Area ◽  
Chemical Characteristics ◽  
New Taxon ◽  
Santa Cruz ◽  
Physico Chemical ◽  
Argentinean Patagonia ◽  
A New Species

A new species of Sellaphora was found in modern and fossil sediments from shallow-lake Laguna Gemelas Este, Santa Cruz, Argentina. The new taxon was studied with light microscopy and scanning electron microscopy. We present a detailed analysis of its morphology, supporting its placement in the genus Sellaphora Mereschkowsky, and report the physico-chemical characteristics of the lake where it was found. Sellaphora mayrii sp. nov. is most similar to S. smirnovii Chudaev & Gololobova, a small-celled species first reported from Russia. Both species have in common the valve outline, but the new species from Argentina has a wider size range and, when observed with electron microscopy, is visibly different regarding stria pattern, central area, and shape of the areolae.

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