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.
Trochoguembelitria liuae Arenillas et al. 2016 | |||
Trochoguembelitria olssoni Arenillas et al. 2016 |
Current identification:
Original Description
Etymology:
Extra details from original publication
Remarks: Guembelitria s. s. differs from Trochoguembelitria n. gen. in having pore-mounded wall texture and triserial arrangement throughout. Arz et al. (2010) showed other wall texture types in Guembelitria, but they are not rugose. Globoconusa differs in having a pustulate wall texture, with sharp, more sparsely distributed pustules. Parvularuglobigerina and Palaeoglobigerina differ in having smooth wall textures, also often covered with a secondary granular crust. Trochospiral specimens with rugose wall texture rst occur in the E. simplicissima Subzone (middle-upper part of the Zone Pa), but they are abundant only in the transition between Pv. eugubina (Pa) and P. pseudobulloides (P1) Zones. These specimens were already documented by Liu & Olsson (1992, 1994) and Olsson et al. (1992, 1999). However, they considered them as belonging to Parvularugoglobigerina after emending the genus. This emendation was proposed to redefine the type of wall texture, since they considered that Parvularugoglobigerina sometimes exhibit pore-mounds, illustrating trochospiral specimens with a pore-mounded rugose wall. We now include these rugose forms in Trochoguembelitria n. gen.
Arenillas, I., Arz, J. A. & Náñez, C. (2012). Smooth and rugose wall textures in earliest Danian trochospiral planktic foraminifera from Tunisia. Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen. 266: 123-142. gs Liu, C. & Olsson, R. K. (1992). Evolutionary radiation of microperforate planktonic foraminifera following the K/T mass extinction event. Journal of Foraminiferal Research. 22: 328-346. gs Liu, C. & Olsson, R. K. (1994). On the origin of Danian normal perforate planktonic foraminifera from Hedbergella. Journal of Foraminiferal Research. 24: 61-74. gs Olsson, R. K., Hemleben, C., Berggren, W. A. & Liu, C. (1992). Wall Texture Classification of planktonic foraminifera genera in the Lower Danian. Journal of Foraminiferal Research. 22(3): 195-213. gs Olsson, R. K., Hemleben, C., Berggren, W. A. & Huber, B. T. (1999). Atlas of Paleocene Planktonic Foraminifera. Smithsonian Institution Press, Washington, DC. (85): 1-252. gsReferences:
Trochoguembelitria compiled by the pforams@mikrotax project team viewed: 8-11-2024
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