The Globoroatioidea (Globorotaliacea in older classifications) constitutes a superfamily of
Cenozoic
The Cenozoic ( ; ) is Earth's current geological era, representing the last 66million years of Earth's history. It is characterised by the dominance of mammals, birds and flowering plants, a cooling and drying climate, and the current configura ...
plantonic foraminifera
Foraminifera (; Latin for "hole bearers"; informally called "forams") are single-celled organisms, members of a phylum or class of amoeboid protists characterized by streaming granular Ectoplasm (cell biology), ectoplasm for catching food and ot ...
. It is part of the suborder
Globigerinina
The Globigerinina is a suborder of foraminiferans that are found as marine plankton. They produce hyaline calcareous tests, and are known as fossils from the Jurassic period onwards. The group has included more than 100 genera and over 400 spec ...
.
[Globorotalioidea](_blank)
World Foraminifera Database, accessed 27 November 2018 Globoroatioidea have trochospiral tests with rounded to carinate peripheries, the walls of which are of finely lamellar, perforate, of optically radial
calcite
Calcite is a Carbonate minerals, carbonate mineral and the most stable Polymorphism (materials science), polymorph of calcium carbonate (CaCO3). It is a very common mineral, particularly as a component of limestone. Calcite defines hardness 3 on ...
, with an inner organic lining. The surface of these tests is smooth, lacking spines, but may be covered with pustules or pitted, and may have one or more large pores at the center. There is a single primary aperture that may be bordered by an imperforate lip, as well as possible supplementary apertures.
Families included in the Globoroatioidea, in temporal sequence, as per
Loeblich and
Tappan, 1988, are the:
*
Eoglobigerinidae ''L. Paleocene (L. Danian)''
*
Truncorotaloididae
Truncorotaloididae is a family of foraminifera belonging to the superfamily Globorotalioidea in the suborder Globigerinina and the order Rotaliida. ''M. Paleocene to U.Eocene''
*
Catapsydracidae ''Paleocene to Holocene''
*
Globorotaliidae ''Paleocene to Holocene''
*
Candeinidae ''M. Eocene to Holocene''
*
Pulleniatinidae ''M. Miocene to Holocene''
Earlier, Loeblich and Tappan, 1964, in the Treatise on Invertebrate Paleontology, Part C, in which foraminiferal taxa are ranked as an Order rather than as a Class, the equivalent Globorataliidae included only the subfamilies Globorotaliinae and Truncorotaliinae. The other four families now included in the Globorotaliacea are based on taxa that were included in the
Globigerinidae.
References
* A. R. Loeblich & H. Tappan, 1964. Sarcodina Chiefly "Thecamoebians" and Foraminiferida;
Treatise on Invertebrate Paleontology
The ''Treatise on Invertebrate Paleontology'' (or ''TIP'') published by the Geological Society of America and the University of Kansas Press, is a definitive multi-authored work of some 50 volumes, written by more than 300 paleontologists, and co ...
, Part C Protista 2.
*Loeblich & Tappan, 1988. Forminiferal Genera and their Classification. E-book
{{Taxonbar, from=Q5571077
Foraminifera superfamilies
Globigerinina