An updated suprageneric classification of planktic foraminifera after growing evidence of multiple benthic-planktic transitions

Arenillas, I. (Universidad de Zaragoza) ; Arz, J. A. (Universidad de Zaragoza) ; Gilabert, V. (Universidad de Zaragoza)

Resumen: Planktic foraminifera have traditionally been classified within a single order: Globigerinida. However, recent phylogenetic studies, both molecular and stratophenetic, are evidencing the polyphyletic origin of planktic foraminifera from several benthic ancestors. At least four independent events of benthic-planktic transition have been identified. One of them occurred after the Cretaceous–Paleogene boundary mass extinction, originating the first Cenozoic globigerinids. Another three occurred in the Mesozoic, originating three groups of planktic foraminifera (globotruncanids, heterohelicids and guembelitriids) not related phylogenetically to each other or to current globigerinids. These findings make it necessary to carry out an exhaustive review of their suprageneric systematics, mainly at the order level. Here we propose a new, more natural classification, grouping them into four orders: Globigerinida, Heterohelicida, Globotruncanida n. ord., and Guembelitriida n. ord. To better reflect the diversity and phylogeny of planktic foraminifera, we have also defined two new superfamilies: Abathomphaloidea n. superfam. and Parvularugoglobigerinoidea n. superfam., and one new family: Parvularuglobigerinidae n. fam.

Idioma: Inglés

DOI: 10.7203/sjp.22189

Año: 2022

Publicado en: Spanish Journal of Palaeontology 37, 1 (2022), 1-34
ISSN: 2255-0550

Factor impacto CITESCORE: 1.1 - Earth and Planetary Sciences (Q4)

Factor impacto SCIMAGO: 0.229 - Paleontology (Q4)

Tipo y forma: Article

Área (Departamento): Área Paleontología (Dpto. Ciencias de la Tierra)