Vol. 21 No. 3 (2018): Artigos

Morphological and petrographic analysis of newly identified stromatolitic occurrences in the Lagoa do Jacaré Formation, Bambuí Group, State of Minas Gerais, Brazil
Daniel Martins dos Santos, Evelyn A. M. Sanchez & Rodrigo Miloni Santucci
 
Neogene calcareous nannofossils from San José Island, Baja California Sur, Mexico 
Aurora A. Jiménez-Mendoza, Ana Luisa Carreño, Adriana Y. Miranda-Martínez & Jorge Ledesma-Vázquez

Menardiiform planktonic foraminifera stratigraphy from Middle Pleistocene to Holocene in the Western South Atlantic 
Karen Badaraco Costa, Edmundo Camillo Jr, Ana Cláudia Aoki Santarosa, Fabiane Sayuri Iwai, Juliana Pereira de Quadros, Itamar Ivo Leipnitz & Felipe Antonio de Lima Toledo
 
The first record of Ascaridoidea eggs discovered in Crocodyliformes hosts from the Upper Cretaceous of Brazil
Daniel Fontana Ferreira Cardia, Reinaldo J. Bertini, Lucilene Granuzzio Camossi & Luiz Antonio Letizio
 
Throwing light on an uncommon preservation of Blattodea from the Crato Formation (Araripe Basin, Cretaceous), Brazil
Francisco Irineudo Bezerra, João Hermínio da Silva, Amauri Jardim de Paula, Naiara Cipriano Oliveira, Alexandre Rocha Paschoal, Paulo Tarso C. Freire, Bartolomeu Cruz Viana Neto & Márcio Mendes
 
New records of Tryonia (Gastropoda, Cochliopidae) from the Mio–Pliocene Solimões Formation (State of Amazonas), Brazil
Lívia Isadora de Almeida Guimarães, Maria Inês Feijó Ramos & Luiz Ricardo Lopes de Simone
 
Interpretações paleoclimáticas a partir da tafoflora de Caieira, Formação Pirabas, Oligoceno/Mioceno da Amazônia Oriental, Pará, Brasil
Francisco Santiago & Fresia Ricardi-Branco
 
A new species of Biomphalaria Preston, 1910 (Gastropoda, Planorbidae) from the Upper Cretaceous of Uruguay
Fernanda Cabrera & Sergio Martínez
 
First record of a macroraptorial sperm whale (Cetacea, Physeteroidea) from the Miocene of Argentina
David Sebastián Piazza, Federico Lisandro Agnolin & Sergio Lucero

Acknowledgments/Agradecimentos