Chernyshinelloidea

Belongs within: Endothyroida. Teardrops in the Palaeozoic Published 29 July 2022 Among the early major radiations of foraminiferans in the Palaeozoic era was the assemblage known as the endothyroids, regarded by most researchers as the fore-runners of the iconic fusulinoids*. Like fusulinoids, endothyroids had test walls constructed of microgranular calcite, but generally had a simpler… Continue reading Chernyshinelloidea

Rugosofusulinidae

Belongs within: Fusulinoida. Rugosofusulinids? Published 14 March 2020 We return once again to the fusulinoids, large, complex Foraminifera of the late Palaeozoic. For this post, I’m taking a look at the Rugosofusulinidae, a group known from the last part of the Carboniferous and the earliest part of the Permian. Or to put it more technically,… Continue reading Rugosofusulinidae

Spirillinana

Belongs within: Tubothalamea.Contains: Patellinida, Spirillinidae, Cymbaloporidae, Involutinidae, Lasiodiscidae, Tetrataxidae, Archaediscidae. The forams that bind Published 18 December 2017 Here we see an example of Fabiania. Fabiania is a genus of foraminiferan known from the Eocene epoch that could reach a relatively large size as forams go, up to several millimetres across (nowhere near as large… Continue reading Spirillinana

Endothyranopsidae

Belongs within: Loeblichiidae. The Endothyranopsinae are a group of planispiral forams known from the Lower Carboniferous (Loeblich & Tappan 1964). <==EndothyranopsidaeM13 |–NeoendothyrinaeM13 | |–Neoendothyra Reitlinger 1965R-CB96 | | |–*N. reicheli Reitlinger 1965R-CB96 | | `–N. consuetaR-CB96 | |–Linendothyra Mamet 1992R-CB96 | | |–*L. jiheensis (Lin 1985) [=Neoendothyra jiheensis]R-CB96 | | `–L. politaR-CB96 | `–‘Timanella’ Reitlinger… Continue reading Endothyranopsidae

Cornuspirida

Belongs within: Tubothalamea. The Hemigordiopsidae are a group of porcelaneous Foraminifera with a test that is streptospirally coiled in early stages. <==Cornuspirida [Cornuspiracea, Cornuspiridea, Cornuspirideae, Cornuspiroida, Cyclogyrina] |–HemigordiopsinaM13 | |–Shanitoidea [Shanitinidea]M13 | | |–Shanita Brönnimann, Whittaker & Zaninetti 1978YJ04 [ShanitidaeM13] | | | |–*S. amosiYJ04 | | | |–S. bronnimanniYJ04 | | | |–S. chagouensisYJ04… Continue reading Cornuspirida

Tubothalamea

Belongs within: Foraminifera.Contains: Ammodiscana, Spirillinana, Miliamminana, Endothyroida, Cornuspirida, Nubeculariida, Miliolina. The Miliolida are a group of Foraminifera with a test that is most commonly calcareous and porcelaneous in appearance, though a minority of genera have an agglutinated or siliceous test (Pawlowski et al. 2013). The Spirillinida are a lineage of Foraminifera with a test formed… Continue reading Tubothalamea

Spiroloculina

Belongs within: Miliolina. Spiroloculina is a genus of porcelaneous Foraminifera known from the Upper Cretaceous to the present that is planispiral throughout development (Loeblich & Tappan 1964). Characters (from Loeblich & Tappan 1964): Test free, commonly with flattened sides and lanceolate or fusiform outline, earliest stage may consist of single chamber completely encircling proloculus, later… Continue reading Spiroloculina

Soritidae

Belongs within: Soritida. The Soritinae are a group of porcellaneous Foraminifera known from the Eocene to the present, characterised by a distinct pattern of chamber addition (Loeblich & Tappan 1964). <==Soritidae (see below for synonymy)LT64 |–Opertorbitolites Nuttall 1925LT64 [OpertorbitolitinaeM13] | `–*O. douvillei Nuttall 1925LT64 `–Soritinae [Orbitolitidinae, Orbitolitinae]C40 | i. s.: Orbitolites Lamarck 1801 (see below… Continue reading Soritidae

Meandropsinidae

Belongs within: Soritida. The Meandropsinidae are a group of porcelaneous Foraminifera known from the Upper Cretaceous and Palaeocene (Loeblich & Tappan 1964). Meandering forams Published 11 January 2018 There are some taxonomic names that just instantly bring up a mental image of the sort of organism to which they refer. For my part, I’ve always… Continue reading Meandropsinidae

Peneroplinae

Belongs within: Soritida. The Peneroplinae are a group of porcelaneous Foraminifera known from the Upper Triassic to the present (Loeblich & Tappan 1964). Characters (from Loeblich & Tappan 1964): Test close-coiled in early stage, later may be uncoiled or annular; chambers simple, not divided into chamberlets; aperture rounded, slitlike, or series of pores on final… Continue reading Peneroplinae