Belongs within: Allogromiida. The Allogromiidae are a group of Foraminifera with a pseudochitinous test (or test of agglutinated matter on a pseudochitinous base) known from the Upper Cambrian to the present. Gametes, where known, are amoeboid (Loeblich & Tappan 1964). <==Allogromiidae (see below for synonymy) | i. s.: Rhabdogromia Valkanova 1964G86 | `–R. flexilis (Höglund… Continue reading Allogromiidae
Category: Foraminifera
Morozovella
Belongs within: Globorotaliida. Morozovella is a genus of planktonic foraminiferans with strongly anguloconical chambers, and the wall strongly pustulose on parts of the spire and umbilicus. Morozovella McGowran 1968MO81 |–M. apanthesmaM12 `–+–M. angulata (White 1928)M12, MO81 [=Globorotalia angulataMO81] `–+–M. conicotruncataM12 `–M. velascoensis (Cushman 1925)M12, MO81 (see below for synonymy)Morozovella incertae sedis: M. acuta (Toulmin 1941) [=Globorotalia wilcoxensis… Continue reading Morozovella
Lagynidae
Belongs within: Allogromiida. The Lagynidae are a group of Foraminifera with membranous or pseudochitinous tests. They have been distinguished from the similar Allogromiidae by the production of biflagellate gametes (Loeblich & Tappan 1964). Characters (Loeblich & Tappan 1964): Test small, membranous to pseudochitinous, may have ferruginous encrustations or rarely agglutinated matter; may form colonies; aperture… Continue reading Lagynidae
Hippocrepinina
Belongs within: Spirillinida. The Hippocrepinina are a group of agglutinated foraminiferans with a commonly elongate test composed of a globular proloculus followed by a tubular pseudochamber (Kaminski 2014). In the Hippocrepinoidea the inner chamber is undivided or only weakly divided into pseudochambers of the wall. Division of pseudochambers is more marked in the Hormosinelloidea. Hyperamminids:… Continue reading Hippocrepinina
Saccamminidae
Belongs within: Saccamminina. The Saccamminidae are a group of Foraminifera with agglutinated tests known from the Ordovician to the present (Loeblich & Tappan 1964). It is likely that this represents a polyphyletic assemblage of relatively simple-bodied forams. In members of the subfamily Saccammininae, the test is free and has a definite aperture (Loeblich & Tappan… Continue reading Saccamminidae
Astrorhizoidea
Belongs within: Sar.Contains: Rhabdammininae, Bathysiphoninae. Three random foram genera Published 12 July 2010 As explained elsewhere, the ‘Saccamminidae’ are undoubtedly a polyphyletic assemblage of forams of very simple morphology. In the influential, and outdated, classification of Cushman (1940), ‘saccamminids’ were divided between four subfamilies for which odds are that each of those subfamilies are as polyphyletic as… Continue reading Astrorhizoidea
Cornuspirida
Belongs within: Miliolida.Contains: Cornuspiridae. The Cornuspirida are a group of porcelaneous foraminiferans in which the free test has the proloculus followed by a single tubular, undivided chamber. The Hemigordiopsidae have the test streptospirally coiled in early stages. <==Cornuspirida [Cornuspiracea, Cornuspiridea, Cornuspirideae, Cornuspiroida, Cyclogyrina] |–HemigordiopsinaM13 | |–Shanitoidea [Shanitinidea]M13 | | |–Shanita Brönnimann, Whittaker & Zaninetti 1978YJ04 [ShanitidaeM13]… Continue reading Cornuspirida
Spirillinida
Belongs within: Sar.Contains: Hippocrepinina, Ammodiscoidea, Patellinida, Spirillinidae, Cymbaloporidae, Involutinidae, Archaediscoida. The Spirillinida are a lineage of foraminiferans in which the test is composed a proloculus followed by an enrolled tubular crystal, with a terminal aperture. The wall may be agglutinated or composed of low magnesium, monocrystalline calcite (Pawlowski et al. 2013). Spirillinida [Spirillinacea, Spirillinata]PHT13 |–Ammodiscida [Ammodiscana]PHT13 | | i.… Continue reading Spirillinida
Soritida
Belongs within: Miliolina.Contains: Soritidae, Meandropsinidae, Peneroplinae. The Soritida are a lineage of often complex porcelaneous foraminiferans in which the test is initially planispiral though they may later become serial or flabelliform. Members include the Fischerinidae, in which the test is undivided after the proloculus (Loeblich & Tappan 1964). The Rhapydionidae are more or less conical… Continue reading Soritida
Meandropsinidae
Belongs within: Soritida. The Meandropsinidae are a group of porcelaneous Foraminifera known from the Upper Cretaceous and Palaeocene. Chambers appear subdivided by numerous incomplete transverse partitions (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… Continue reading Meandropsinidae