Late Cretaceous ostracods from the central area of the Potiguar Basin, Northeastern Brazil

Four previously undescribed species of marine nematodes were collected on the continental shelf of the Potiguar Basin in northeastern Brazil. Stygodesmodora amphidialis sp. n. has a large fovea amphidialis, long cephalic setae, globular spermatic cells, 6–8 tubular supplements and button-like caudal papillae. Stygodesmodora paramphidialis sp. n. is similar but can be differentiated by the presence of a bipartite lumen and a fovea amphidialis smaller than in S. amphidialis sp. n. Stygodesmodora robusta sp. n. has a relatively robust body, strongly annulated cuticle, one large dorsal tooth and a small ventral tooth, one row of nine ventrally placed precloacal setae, and arched spicules. Stygodesmodora potiguensis sp. n. has the cuticle strongly annulated, many setae along the body, supplements absent, and sexual dimorphism in the size of the fovea amphidialis. These four new species increase to seven the number of taxa known in the genus.

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Long-term monitoring of marine turtle nests in northeastern Brazil

Biota Neotropica ◽

10.1590/1676-0611-bn-2020-1159 ◽

2021 ◽

Vol 21 (3) ◽

Author(s):

Aline da Costa Bomfim ◽

Daniel Solon Dias de Farias ◽

Flávio José de Lima Silva ◽

Silmara Rossi ◽

Simone Almeida Gavilan ◽

...

Keyword(s):

Hatching Success ◽

Sea Turtle ◽

Marine Turtle ◽

Northeastern Brazil ◽

Mitigation Measures ◽

Olive Ridley ◽

Potiguar Basin ◽

Long Term Monitoring ◽

Term Monitoring

Abstract: This study monitored marine turtle nests in a region known as the Potiguar Basin, which stretches from the northern region of Rio Grande do Norte State (5°4’1.15” S, 36°4’36.41” W) to eastern Ceará State (4°38’48.28” S, 37°32’52.08” W) in Brazil. We collected data from January 2011 to December 2019 to identify species of sea turtles that spawn in the basin, to analyze the nesting spatial-temporal pattern and nests characteristics, and to record effects of environmental and anthropic factors on nests. A field team examined sea turtle tracks and nests signs. Turtle clutches were monitored daily until hatchings emerged from the nests. We monitored nests of hawksbill (Eretmochelys imbricata; n = 238) and olive Ridley turtles (Lepidochelys olivacea; n = 103). The nesting season for E. imbricata occurred between December and May and for L. olivacea from March to August. Hawksbills had clutch size, incubation time, number of unhatched eggs, and dead hatchlings higher than olive Ridley turtles; nevertheless, they presented lower hatching success. Precipitation between 0 and 22 mm and relative humidity (RH) higher than 69% increased the hatching success rate for E. imbricata; however, rainfall above 11 mm and RH 64% had the same effect for L. olivacea. Signs of egg theft and human presence (e.g. vehicle traffic and plastic residues on the beach) were recorded and are considered threats to nests. The results of our long-term monitoring study in the Potiguar Basin provide basis for the implementation of mitigation measures and adoption of management policies at nesting beaches in this Brazilian region.

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Use of Hydrogen and Carbon Stable Isotopes Characterizing Oils from the Potiguar Basin (Onshore), Northeastern Brazil

AAPG Bulletin ◽

10.1306/00aa9be2-1730-11d7-8645000102c1865d ◽

1999 ◽

Vol 83 (1999) ◽

Author(s):

Eugenio Vaz dos Santos Neto2 and Jo

Keyword(s):

Stable Isotopes ◽

Northeastern Brazil ◽

Carbon Stable Isotopes ◽

Potiguar Basin

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The Mossoró Sandstone, Canto do Amaro Oil Field, Late Cretaceous of the Potiguar Basin, Brazil: An Example of a Tidal Inlet-Channel Reservoir

Frontiers in Sedimentary Geology - Marine Clastic Reservoirs ◽

10.1007/978-1-4757-0160-9_9 ◽

1993 ◽

pp. 183-199

Author(s):

Eduardo Bagnoli

Keyword(s):

Late Cretaceous ◽

Tidal Inlet ◽

Oil Field ◽

Inlet Channel ◽

Potiguar Basin

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New records and bathymetric distribution of deep-sea shrimps of the family Glyphocrangonidae (Decapoda: Caridea) from the Potiguar Basin, northeastern Brazil

Nauplius ◽

10.1590/2358-2936e2017002 ◽

2017 ◽

Vol 25 (0) ◽

Author(s):

Flavio de Almeida Alves-Júnior ◽

Marina de Sá Leitão Câmara de Araújo ◽

Jesser F. Souza-Filho

Keyword(s):

Deep Sea ◽

New Records ◽

Northeastern Brazil ◽

Bathymetric Distribution ◽

Potiguar Basin ◽

The Family

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A new species of Petalobrissus Lambert 1916 (Echinoidea: Faujasiidae) from the Jandaíra Formation, Potiguar Basin (Brazil)

Zootaxa ◽

10.11646/zootaxa.4422.4.8 ◽

2018 ◽

Vol 4422 (4) ◽

pp. 581

Author(s):

JESSIKA ALVES ◽

FELIPE A. C. MONTEIRO ◽

HELENA MATTHEWS-CASCON ◽

RODRIGO JOHNSSON ◽

ELIZABETH G. NEVES

Keyword(s):

New Species ◽

Late Cretaceous ◽

Rio Grande ◽

Identification Key ◽

Key To Species ◽

Potiguar Basin ◽

A New Species

A new Late Cretaceous species of Petalobrissus, Petalobrissus lehugueurae sp. nov., is described from the Jandaíra Formation, Potiguar Basin, state of Rio Grande do Norte. To date, this genus comprises a total of 20 species, only two of which, Petalobrissus setifensis and Petalobrissus cubensis have so far been recorded from the Jandaíra Formation. Petalobrissus lehugeurae sp. nov. is distinguished from its congeners in that gonopores occupy only a small portion of the genital plates, in having a slit-like periproct and a unique abrupt depression of the test that forms a pronounced keel below the periproct. In addition, an identification key to species of Petalobrissus is presented.

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Taxonomy of limnic Ostracoda (Crustacea) from the Alagamar Formation, middle–upper Aptian, Potiguar Basin, northeastern Brazil

Journal of Paleontology ◽

10.1666/11-108r.1 ◽

2013 ◽

Vol 87 (1) ◽

pp. 91-104 ◽

Cited By ~ 13

Author(s):

Dermeval Aparecido Do Carmo ◽

João Carlos Coimbra ◽

Robin Charles Whatley ◽

Lucas Silveira Antonietto ◽

Raphael Teixeira De Paiva Citon

Keyword(s):

Large Range ◽

Northeastern Brazil ◽

Western Africa ◽

Potiguar Basin

Fifteen limnic ostracodes species have been recorded in the Alagamar Formation, Potiguar Basin: Cypridea araripensis Silva, 1978a; Cypridea? sp., Harbinia sinuata (Krömmelbein and Weber, 1971); Harbinia crepata n. sp., Harbinia dimorphica n. sp., Harbinia alta Antonietto et al., 2012; Paracypria? elongata n. sp., Ilyocyprimorpha berthoui (Colin and Dépêche, 1997); Ilyocypris? sp., Brasacypris subovatum n. sp., Candona? sp., Theriosynoecum colini n. sp., T. guzzoi n. sp., T. silvai (Silva, 1978b) diagnosis emended by Do Carmo et al. (2004b); and Darwinula martinsi Silva, 1978c diagnosis emended by Do Carmo et al. (2004b). Nine of these species have also been recorded outside of the Potiguar Basin, either in other Cretaceous basins in Brazil or coeval strata in western Africa. Despite the controversy about dating the local Alagoas Stage and the relatively large range of the Zone Harbinia spp. 201–218, the material studied in this paper belongs to the interval corresponding to the well-defined palynological zone coded as P-270, which is mid-upper Aptian in age.

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