CATALOG OF ORIGINAL DESCRIPTIONS: Globotruncanida Arz, Arenillas & Gilabert in Arenillas et al. 2022
This page provides data from the catalog of type descriptions. The catalog is sorted alphabetically. Use the current identification link to go back to the main database.
Original Description Diagnosis. Test trochospiral or planispiral. Peripheral margin without keel, or with one or two keel. Aperture bordered by a lip or protected by a porticus or a tegillum, rarely by a bulla. Finely perforate to macroperforate. Wall surface smooth, pore-mounded, pitted, reticulate, hispid, pustulate, muricate, rugose, or costate. Wall hyaline calcitic, but early forms may be aragonitic. Extra details from original publication Superfamilies included. Abathomphaloidea Arz, Are- nillas & Gilabert n. superfam.; Favuselloidea Longoria, 1974; Hedbergelloidea Longoria & Gamper, 1975; Glo- botruncanoidea Brotzen, 1942; Planomalinoidea Bolli, Loeblich & Tappan, 1957; Rotaliporoidea Sigal, 1958; Rugoglobigerinoidea Subbotina, 1959.
Justification: If the hypothesis that Cenozoic globigerinids evolved after the KPB extinction from the benthic genus Caucasina is verified, as proposed by Brinkhuis and Zachariasse (1988) and Arenillas and Arz (2017), then Mesozoic planktic foraminifera are phylogenetically disconnected from those of the Cenozoic. Even excluding heterohelicids as already postulated by Fursenko (1958) and BouDagher-Fadel (2012, 2015), the order Globigerinida becomes polyphyletic if the spiral Mesozoic taxa are included. It is therefore necessary to separate the latter in a new order, which we have called Globotruncanida, because the genus Globotruncana Cushman, 1927, and the family Globotruncanidae Brotzen, 1942, are the ones that best characterize it. Consequently, it is also necessary to emend the order Globigerinida.
This new order includes Conoglobigerina, the first planktic foraminifera to appear (if Sphaerogerina is excluded), as well as all its descendants (Fig. 1). Consequently, the order Globotruncanida appeared in the Bajocian (Middle Jurassic), and includes 7 superfamilies and 20 families. The globotruncanids reached at the Maastrichtian the largest test size of all planktic foraminifera, up to 1 mm in diameter as in the case of Contusotruncana Korchagin, 1982. For comparison, Cenozoic and current species do not exceed 600 μm in diameter.
References:
Arenillas, I. & Arz, J. A. (2017). Benthic origin and earliest evolution of the first planktonic foraminifera after the Cretaceous/Palaeogene boundary mass extinction. Historical Biology. 29: 25-42. gs
Arenillas, I., Arz, J. A. & Gilabert, V. (2022). An updated suprageneric classification of planktic foraminifera after growing evidence of multiple benthic-planktic transitions. Spanish Journal of Palaeontology. 37(1): 1-34. gsO
BouDagher-Fadel, M. K. (2012). Biostratigraphic and Geological Significance of Planktonic Foraminifera (1st Edition). Elsevier., . 1-319. gs
BouDagher-Fadel, M. K. (2015). Biostratigraphic and geological significance of planktonic foraminifera. (updated 2nd edition). Elsevier. 1-. gs
Brinkhuis, H. & Zachariasse, W. (1988). Dinoflagellate cysts, sea level changes and planktonic foraminifers across the Cretaceous-Tertiary boundary at El Haria, northwest Tunisia. Marine Micropaleontology. 13(2): 153-191. gs
Fursenko, A. V. (1958). Osnovnye etapy razvitiya fauny foraminifer v geologicheskom proshlom [The major stages of development of foraminiferal faunas in the geological past]. Trudy Instituta Geologischeskikh Nauk, Akademiia Nauk Belorrusskoi SSR, Minsk. 1: 10-29. gs
Missing or ambiguous references: ;
Globotruncanida compiled by the pforams@mikrotax project teamviewed: 12-1-2025
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