Ichnofossils associated with lingulide shells from the Lower Permian of Brazil

Autor(es)

Vinn, Olev ^[1] ; Zabini, Carolina ^[2] ; Weinschutz, Luiz Carlos ^[3]

Afiliação do(s) autor(es)

^[1] Univ Tartu, Dept Geol, Ravila 14A, EE-50411 Tartu - Estonia

^[2] Univ Estadual Campinas, Inst Geosci, Dept Geol & Nat Resources, BR-13083855 Campinas, SP - Brazil

^[3] UnC, CENPALEO, Av Pres Nereu Ramos 1071, BR-89300000 Mafra, SC - Brazil

• Tipo de documento: Artigo Científico
• Fonte: CARNETS DE GEOLOGIE; v. 19, n. 19, p. 439-444, DEC 27 2019.
• Citações Web of Science: 0

Resumo

Lingulides from Lower Permian of Brazil (24% substrates) showed signs of bioerosion in form of multiple small shallow pits that resemble incomplete Oichnus paraboloides borings. A single lingulide valve showed a centrally located large circular predatory Oichnus simplex boring. Several lingulide shells (c. 21%) show small Arachnostega traces in their interior. The diameter of Arachnostega burrows is relatively constant. These burrows are more similar to juvenile stages of Arachnostega gastrochaena and do not form well-developed meshwork of tunnels. This is the first record of Arachnostega from the interior of lingulide shells and indicates that even very small lingulide shells were suitable substrates for cryptic organisms. (AU)

• Processo FAPESP: 17/10956-5 - Taxonomia e análise fossildiagenética dos lingulídeos paleozoicos das Bacias do Paraná e Parnaíba
• Beneficiário: Carolina Zabini
• Modalidade de apoio: Auxílio à Pesquisa - Regular