PBDB Taxon

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Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Amphibrachium

Protozoa - Spumellaria - Patulibracchiidae

Taxonomy

Amphibrachium was named by Hertwig (1879) [Sepkoski's age data: J u K l Sepkoski's reference number: 755].

It was assigned to Patulibracchiinae by Baumgartner (1980); and to Spumellaria by Sepkoski (2002).

Species

A. bacillum, A. desecatum, A. devoniense, A. inaequale, A. pulchellum

Species lacking formal opinion data

A. sansalvadorensis

Synonyms

Spongolena is a genus. It is extant.

It was synonymized subjectively with Amphibrachium by Kozur and Mostler (1978).

It was assigned to Spumellaria by Sepkoski (2002).
Amphibrachium bacillum was named by Rüst (1892). It is not extant.

It was considered a nomen dubium by Aitchison et al. (2017).
Amphibrachium desecatum was named by Rüst (1892). It is not extant.

It was considered a nomen dubium by Aitchison et al. (2017).
Amphibrachium devoniense was named by Rüst (1892). It is not extant.

It was considered a nomen dubium by Aitchison et al. (2017).
Amphibrachium inaequale was named by Rüst (1892). It is not extant.

It was considered a nomen dubium by Aitchison et al. (2017).
Amphibrachium pulchellum was named by Rüst (1892). It is not extant.

It was considered a nomen dubium by Aitchison et al. (2017).

Synonymy list

Year	Name and author
1879	Amphibrachium Hertwig
1892	Amphibrachium bacillum Rüst
1892	Amphibrachium desecatum Rüst
1892	Amphibrachium devoniense Rüst
1892	Amphibrachium inaequale Rüst
1892	Amphibrachium pulchellum Rüst
1980	Amphibrachium Baumgartner
2002	Amphibrachium Sepkoski
2002	Spongolena Sepkoski

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Rank	Name	Author
—	Life
—	Eukaryota	()
class	Protozoa	Goldfuss 1820
subphylum	Sarcodina	Schmarda 1871
class	Reticularea	Lankester 1885

Rank	Name	Author
subclass	Radiolaria	(Müller 1858)
order	Spumellaria	Ehrenberg 1875
family	Patulibracchiidae	Pessagno 1971
subfamily	Patulibracchiinae	Pessagno 1971
genus	Amphibrachium	Hertwig 1879

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.

G. †Amphibrachium Hertwig 1879

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Invalid names: Amphibrachium bacillum Rüst 1892 [nomen dubium], Amphibrachium desecatum Rüst 1892 [nomen dubium], Amphibrachium devoniense Rüst 1892 [nomen dubium], Amphibrachium inaequale Rüst 1892 [nomen dubium], Amphibrachium pulchellum Rüst 1892 [nomen dubium], Spongolena [synonym]

Diagnosis

No diagnoses are available

Measurements

No measurements are available

Composition:

silicap

Environment:

marinep

Locomotion:

passively mobilep

Life habit:

planktonicp

Diet:

omnivorep

Created:

2005-01-28 01:13:47

Modified:

2005-01-28 03:13:47

Source: p = phylum

Reference: Kiessling 1999

Age range: base of the Levesquei to the top of the Danian or 182.90000 to 61.66000 Ma

Collections (15 total)

Time interval	Ma	Country or state	Original ID and collection number
Levesquei	182.9 - 174.7	Germany	A. sp. (59428)
Callovian	165.3 - 161.5	Italy	Amphibracchium sp. B (47164)
Early/Lower Tithonian	149.2 - 145.06	Mexico (San Luis Potosi)	Amphibracchium petersoni (51763 51769 51776)
Late/Upper Tithonian - Berriasian	145.06 - 137.05	Germany	Amphibracchium sp. A (47169)
Berriasian	143.1 - 137.05	Oman	Amphibracchium sp. A (47175)
Late/Upper Maastrichtian	72.2 - 66.0	New Zealand (Marlborough)	A. sansalvadorensis (95884 95885)
Danian	66.0 - 61.66	New Zealand (Marlborough)	A. sansalvadorensis (95892 95894 95896 95897 95901 95902)