Early Cretaceous subsidence of the Naturaliste Plateau defined by a new record of volcaniclastic-rich sequence at IODP Site U1513

New record of Tettigarctidae (Insecta, Hemiptera, Cicadoidea) from the Lower Cretaceous of Brazil

Zootaxa ◽

10.11646/zootaxa.1087.1.5 ◽

2005 ◽

Vol 1087 (1) ◽

pp. 53 ◽

Cited By ~ 8

Author(s):

FEDERICA MENON

Keyword(s):

Southern Hemisphere ◽

Early Cretaceous ◽

Lower Cretaceous ◽

New Record ◽

New Genus ◽

New Genus And Species ◽

New Discovery

Tettagalma striata, new genus and species of Tettigarctidae (Hemiptera: Cicadoidea), is described from the Lower Cretaceous laminated limestones of the Crato Formation, Brazil. The new discovery represents the first certain record of this family in Brazil and confirms its presence in the Southern Hemisphere during the early Cretaceous. Architettix Hamilton, 1990, from the same formation, and all the taxa originally placed in Cicadoprosbolidae, are also included in Tettigarctidae, as the former is considered a synonym.

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A new Early Cretaceous articulate brachiopod from the Northwest Territories, Canada, and its paleobiogeographic significance

Journal of Paleontology ◽

10.1017/s0022336000018576 ◽

1990 ◽

Vol 64 (3) ◽

pp. 367-372 ◽

Cited By ~ 6

Author(s):

Michael R. Sandy

Keyword(s):

North America ◽

Northwest Territories ◽

Early Cretaceous ◽

New Record ◽

High Latitudes ◽

American Continent ◽

North American Continent ◽

The North ◽

Northwest Europe ◽

Central Atlantic

A new terebratellid brachiopod species, Modestella jeletzkyi n. sp., is described from the Early Cretaceous of Prince Patrick Island, Northwest Territories, Canada. The occurrence extends the paleobiogeographic range of Modestella from northwest Europe into the northern high-latitudes of the North American continent. This new record of Modestella suggests brachiopod dispersal between northwest Europe and North America via the East Greenland Seaway, probably during the Albian. The occurrences of two other Cretaceous terebratellid genera, Advenina and Psilothyris, are updated. They are both homeomorphic with Modestella. Advenina, from the Tethyan and Jura regions of Europe, is now recorded from the Early Cretaceous of Sardinia. The occurrence of Psilothyris in North America and Europe is best explained by dispersal through the opening central Atlantic Ocean, indicating the continuation of Hispanic Corridor-type faunal links established during the Jurassic.

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A new dinosaur ichnosite from the early Cretaceous Sousa Formation, Northeastern Brazil

10.7287/peerj.preprints.1413v1 ◽

2015 ◽

Author(s):

Hebert Bruno Hebert Campos ◽

Niels Bonde ◽

Maria Eduarda Leal ◽

Mário André Dantas

Keyword(s):

Early Cretaceous ◽

New Record ◽

Digital Camera ◽

Northeastern Brazil ◽

Plastic Sheet ◽

Dinosaur Tracks ◽

Theropod Tracks ◽

The Moment ◽

Botucatu Formation

Background. The Sousa Formation contains the richest dinosaur ichnofauna from the Early Cretaceous Rio do Peixe Basin, Northeastern Brazil. Occurs eventually ornithopod tracks, which are found also in the Antenor Navarro and Piranhas Formations. Together with one trackway from the Botucatu Formation, some isolated tracks from the Cenomanian São Luís Basin, and some trackways from the Early Cretaceous Corda Formation, at the moment, these occurrences indicates the only definitive presence of ornithopods in the Mesozoic of Brazil. Material & Methods. In 2015, a fieldwork was held to investigate potential dinosaur tracks in new ichnosites from the Sousa Formation. All the tracks were photographed individually using a digital camera Nikon Coolpix P520. The paleoichnological terminology and morphometric parametrers follows Thulborn (1990), Marty (2008) and Castanera et al. (2013). A plastic sheet was used for drawing the tracks. Directions and measurements of each dinosaur track, as well as the entire outcrop, were taken in situ. Results. The Pereiros ichnosite represents a new occurrence of dinosaur tracks from the Sousa Formation. The dinosaur ichnofauna comprises a medium-sized, bipedal ornithopod trackway, a single ornithopod track and one pair of theropod tracks. Discussion. The ornithopod trackway is characterized by plantigrade, tridactyl, mesaxonic, subsymmetrical and wider than long pes tracks, with large and rounded heels, and short and wide digit impressions. It is referred to the ichnofamily Iguanodontipodidae, previously reported for the Sousa beds. Two medium-sized theropod tracks assigned to Irenesauripus also occurs, representing an expansion of the paleobiogeographical record for this unusual ichnotaxa. The new record of Irenesauripus from the Sousa Formation shows an unusual pattern with morphological similarities to theropods tracks from the Lower Cretaceous Feitianshan Formation of Sichuan, China (Xing et al., 2013). According to Xing et al. (2011), the Chinese tracks preserve partial metatarsal pads that are not distinct from their respective metatarsophalangeal regions. Xing et al. (2011) noted the unusual elongate digit II claw impression, indicating that digit II of the trackmaker possessed a long claw, longer than on any of the other digits. Conclusions. The outcrop studied represents the nineteenth dinosaur tracksite in the Sousa Formation and gives further evidence of the rather rare ornithopod dinosaurs in the Cretaceous of Brazil.

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A new dinosaur ichnosite from the early Cretaceous Sousa Formation, Northeastern Brazil

10.7287/peerj.preprints.1413 ◽

2015 ◽

Author(s):

Hebert Bruno Hebert Campos ◽

Niels Bonde ◽

Maria Eduarda Leal ◽

Mário André Dantas

Keyword(s):

Early Cretaceous ◽

New Record ◽

Digital Camera ◽

Northeastern Brazil ◽

Plastic Sheet ◽

Dinosaur Tracks ◽

Theropod Tracks ◽

The Moment ◽

Botucatu Formation

Background. The Sousa Formation contains the richest dinosaur ichnofauna from the Early Cretaceous Rio do Peixe Basin, Northeastern Brazil. Occurs eventually ornithopod tracks, which are found also in the Antenor Navarro and Piranhas Formations. Together with one trackway from the Botucatu Formation, some isolated tracks from the Cenomanian São Luís Basin, and some trackways from the Early Cretaceous Corda Formation, at the moment, these occurrences indicates the only definitive presence of ornithopods in the Mesozoic of Brazil. Material & Methods. In 2015, a fieldwork was held to investigate potential dinosaur tracks in new ichnosites from the Sousa Formation. All the tracks were photographed individually using a digital camera Nikon Coolpix P520. The paleoichnological terminology and morphometric parametrers follows Thulborn (1990), Marty (2008) and Castanera et al. (2013). A plastic sheet was used for drawing the tracks. Directions and measurements of each dinosaur track, as well as the entire outcrop, were taken in situ. Results. The Pereiros ichnosite represents a new occurrence of dinosaur tracks from the Sousa Formation. The dinosaur ichnofauna comprises a medium-sized, bipedal ornithopod trackway, a single ornithopod track and one pair of theropod tracks. Discussion. The ornithopod trackway is characterized by plantigrade, tridactyl, mesaxonic, subsymmetrical and wider than long pes tracks, with large and rounded heels, and short and wide digit impressions. It is referred to the ichnofamily Iguanodontipodidae, previously reported for the Sousa beds. Two medium-sized theropod tracks assigned to Irenesauripus also occurs, representing an expansion of the paleobiogeographical record for this unusual ichnotaxa. The new record of Irenesauripus from the Sousa Formation shows an unusual pattern with morphological similarities to theropods tracks from the Lower Cretaceous Feitianshan Formation of Sichuan, China (Xing et al., 2013). According to Xing et al. (2011), the Chinese tracks preserve partial metatarsal pads that are not distinct from their respective metatarsophalangeal regions. Xing et al. (2011) noted the unusual elongate digit II claw impression, indicating that digit II of the trackmaker possessed a long claw, longer than on any of the other digits. Conclusions. The outcrop studied represents the nineteenth dinosaur tracksite in the Sousa Formation and gives further evidence of the rather rare ornithopod dinosaurs in the Cretaceous of Brazil.

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Shrimps from the Santana Group (Cretaceous: Albian): new species (Crustacea: Decapoda: Dendrobranchiata) and new record (Crustacea: Decapoda: Caridea)

Anais da Academia Brasileira de Ciências ◽

10.1590/0001-3765201420130338 ◽

2014 ◽

Vol 86 (2) ◽

pp. 663-670 ◽

Cited By ~ 9

Author(s):

ALLYSSON P. PINHEIRO ◽

ANTÔNIO ÁF. SARAIVA ◽

WILLIAM SANTANA

Keyword(s):

New Species ◽

Early Cretaceous ◽

New Record ◽

The State ◽

The Town

The fossil shrimp Araripenaeus timidus n. gen. n. sp. is the first fossil Penaeoidea from Brazil. Here, we describe, illustrate and compare it with Paleomattea deliciosa, a fossil Sergestoidea (Dendrobranchiata) previously described from the same region. The material of the early Cretaceous (Albian) was collected in the town of Jardim, south of the state of Ceará, in the superior septarian concretion level of the Romualdo Formation. Additionally, a second specimen of Kellnerius jamacaruensis was found in the same site of the Araripe Basin.

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