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Alveolinidae is a family of spheroidal to fusiform milioline 
Alveolinids first appeared near the beginning of the Late Cretaceous, about 100 million years ago, some 150 million years after the superficially similar fusulinids became extinct at the end of the Permian.
Irregular coiling is found in the first volutions in the microspheric forms of most genera, indicating a close relationship with the Miliolidae. ''Alveolinella'' is an exception as the proloculus in the microspheric form is perforate and the first volutions are peneroplid in character, suggesting it, ''Alveolinella'', may have a different origin than the other alveolinids.
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 ...
with multiple apertures and complex interiors in which chambers are subdivided into chamberlets and subfloors interconnected by passageways. As with all Miliolina, the test
Test(s), testing, or TEST may refer to:
* Test (assessment), an educational assessment intended to measure the respondents' knowledge or other abilities
Arts and entertainment
* ''Test'' (2013 film), an American film
* ''Test'' (2014 film), ...
wall in alveolinids is porcellaneous and imperforate. In living individuals the pseudopodia emerge through the multiple apertures that line the apertural or leading face of the test.
Alveolinids first appeared near the beginning of the Late Cretaceous, about 100 million years ago, some 150 million years after the superficially similar fusulinids became extinct at the end of the Permian.
Irregular coiling is found in the first volutions in the microspheric forms of most genera, indicating a close relationship with the Miliolidae. ''Alveolinella'' is an exception as the proloculus in the microspheric form is perforate and the first volutions are peneroplid in character, suggesting it, ''Alveolinella'', may have a different origin than the other alveolinids.
References
*Alfred R. Loeblich Jr
Alfred R. Loeblich Jr (1914–1994) was an American micropaleontologist. He was married to Helen Niña Tappan Loeblich and the two co-authored a number of important works on the Foraminifera and related organisms.
Biography
Alfred R. Loeblich Jr ...
and Helen Tappan
Helen may refer to:
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* Helen of Troy, in Greek mythology, the most beautiful woman in the world
* Helen (actress) (born 1938), Indian actress
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* Helen, G ...
, 1964, Treatise on Invertebrate Paleontology, Part C, Protista 2; Geological Society of America and University of Kansas Press.
Tubothalamea
Foraminifera families
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