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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Devonian Tentaculitoidea of the Malvinokaffric Realm of Brazil, Parana Basin

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Author(s):
Comniskey, Jeanninny Carla [1] ; Ghilardi, Renato Pirani [2]
Total Authors: 2
Affiliation:
[1] Univ Sao Paulo, Fac Filosofia Ciencias & Letras Ribeirao Preto, Posgrad Biol Comparada, Av Bandeirantes 3900, BR-14040901 Ribeirao Preto, SP - Brazil
[2] Univ Estadual Paulista, UNESP, Fac Ciencias, Dept Ciencias Biol, Av Eng Luiz Edmundo Carrijo Coube 14-01, BR-17033360 Bauru, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: PALAEONTOLOGIA ELECTRONICA; v. 21, n. 2 2018.
Web of Science Citations: 0
Abstract

The Tentaculitoidea is represented by extinct invertebrates characterized by small, conic, carbonate shells of animals that inhabiting exclusively marine environments. The tentaculitoids occur from the Ordovician to Devonian, with diversity peaking in the Middle Devonian. The Tentaculitoidea has three orders: Tentaculitida (benthic habit), Homoctenida, and Dacryoconarida (planktonic habit). In Brazil, the oldest tentaculitoids occur in strata of the early Silurian, with the genus Tentaculites. Specimens of the Dacryoconarida and Homoctenida orders were only found in the Lower Devonian strata. In this study, we conducted taxonomic analyses of specimens in collections from various research institutions, including samples used in the last systematic study with this group, in mid-1991. The present study aims to review the systematic aspects of the tentaculitoids of the Devonian strata, Parana basin, Brazil. Seven species of tentaculitoids were identified: two species previously described, Tentaculites jaculus and Tentaculites crotalinus and five news species: Tentaculites kozlowskii, Tentaculites paranaensis, Uniconus ciguelii, Homoctenus katzerii, and Styliolina langenii. This is the first known occurrence of the genus Uniconus in Devonian strata from Brazil. The analyzed species of homoctenids and dacryoconarids are larger than those previously described in the specialized literature. This study demonstrated that the tentaculitoids of the Parana Basin have a stratigraphic distribution from the end of the Pragian to the early Givetian. (AU)

FAPESP's process: 13/04884-0 - Systematic review, paleoecology and taphonomy of the class Tentaculitoidea, occurring in Brazilian Devonian
Grantee:Jeanninny Carla Comniskey
Support Opportunities: Scholarships in Brazil - Doctorate