PBDB Taxon

Basic info	Taxonomic history	Classification	Included Taxa
Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Paragloborotalia siakensis

Globigerinidae

Taxonomy

Globorotalia siakensis was named by LeRoy (1939). It is not extant.

It was recombined as Globorotalia (Turborotalia) siakensis by Quilty (1976); it was recombined as Globorotalia (Jenkinsella) siakensis by Kennett and Srinivasan (1983); it was recombined as Paragloborotalia siakensis by Spezzaferri and Premoli Silva (1991), Leckie et al. (2018).

Sister species lacking formal opinion data

P. acrostoma, P. bella, P. continuosa/mayeri, P. griffinoides, P. incognita, P. kugleri, P. nana, P. opima, P. opima/nana, P. partimlabiata, P. pseudocontinuosa, P. pseudocontuosa, P. pseudokugleri, P. semivera, P. siakensis/mayeri

Synonymy list

Year	Name and author
1939	Globorotalia siakensis LeRoy
1976	Globorotalia (Turborotalia) siakensis Quilty p. 647 figs. Pl. 14, Fig. 5, 6
1983	Globorotalia (Jenkinsella) siakensis Kennett and Srinivasan p. 172 figs. Pl. 42, Fig. 1, 6-8
1991	Paragloborotalia siakensis Spezzaferri and Premoli Silva p. 253 figs. Pl. 11, Fig. 2a-c
2018	Paragloborotalia siakensis Leckie et al. p. 166

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Rank	Name	Author
kingdom	Chromista	Cavalier-Smith 1981
subkingdom	Rhizaria	()
phylum	Foraminifera	(Eichwald 1830)
superfamily	Globigerinoidea

Rank	Name	Author
family	Globigerinidae	Carpenter et al. 1862
genus	Paragloborotalia	Cifelli 1982
species	siakensis	(LeRoy 1939)

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

†Paragloborotalia siakensis LeRoy 1939

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Diagnosis

Reference	Diagnosis
J. P. Kennett and M. S. Srinivasan 1983	Test large, low trochospiral, equatorial periphery lobulate; axial periphery broadly rounded; chambers subspherical, inflated, six to seven in the final whorl, increasing slowly in size as added; sutures on umbilical and spiral sides nearly radial, depressed; surface coarsely perforate with polygonal ridges and large pores; umbilicus wide, deep; aperture interiomarginal, extraumbilical-umbilical, a low elongated arch, bordered by a distinct rim.

Measurements

No measurements are available

Locomotion:

stationaryo

Life habit:

semi-infaunalo

Diet:

omnivoreo

Created:

2007-11-28 00:47:02

Modified:

2009-05-20 05:31:44

Source: o = order

Reference: Kiessling 2004

Age range: base of the Chattian to the top of the Calabrian or 27.30000 to 0.77400 Ma

Collections (8 total)

Time interval	Ma	Country or state	Original ID and collection number
Chattian - Aquitanian	27.3 - 20.45	Greece (Ionian Islands)	Globorotalia siakensis (276174 276175 276176 276177)
Middle Miocene	15.98 - 11.63	Ecuador	Globorotalia siakensis (90851)
Vallesian	11.63 - 8.725	Greece (Crete)	Globorotalia siakensis (205363)
Late/Upper Miocene	11.63 - 5.333	India (Andaman and Nicobar)	Globorotalia siakensis (46558)
Calabrian	1.8 - 0.774	Italy	Paragloborotalia siakensis (77008)