PBDB Taxon

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

Trochodiscus

Protozoa - Spumellaria

Taxonomy

Trochodiscus is a genus. It is extant.

It was assigned to Spumellaria by Sepkoski (2002).

Species

T. convexus, T. diversispinus, T. dubius, T. helioides, T. longispinus, T. nicholsoni, T. planatus, T. proavus, T. recurvispinus, T. serrula

Synonyms

Trochodiscus diversispinus was named by Rüst (1892). It is not extant.

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

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

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

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

It was considered a nomen dubium by Aitchison et al. (2017).
Trochodiscus dubius was named by Hinde (1899). It is not extant.

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

Synonymy list

Year	Name and author
1892	Trochodiscus diversispinus Rüst
1892	Trochodiscus longispinus Rüst
1892	Trochodiscus proavus Rüst
1892	Trochodiscus recurvispinus Rüst
1892	Trochodiscus serrula Rüst
1899	Trochodiscus dubius Hinde
2002	Trochodiscus Sepkoski

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

Rank	Name	Author
class	Reticularea	Lankester 1885
subclass	Radiolaria	(Müller 1858)
order	Spumellaria	Ehrenberg 1875
genus	Trochodiscus

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. Trochodiscus

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†Trochodiscus convexus Rüst 1892

Trochodiscus helioides Cleve 1899

†Trochodiscus nicholsoni Rüst 1892

†Trochodiscus planatus Hinde 1899

Invalid names: Trochodiscus diversispinus Rüst 1892 [nomen dubium], Trochodiscus dubius Hinde 1899 [nomen dubium], Trochodiscus longispinus Rüst 1892 [nomen dubium], Trochodiscus proavus Rüst 1892 [nomen dubium], Trochodiscus recurvispinus Rüst 1892 [nomen dubium], Trochodiscus serrula Rüst 1892 [nomen dubium]

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

Maximum range based only on fossils: Middle Pleistocene or 0.77400 to 0.12900 Ma
Minimum age of oldest fossil (stem group age): 0.129 Ma

Collections (7 total)

Time interval	Ma	Country or state	Original ID and collection number
Middle Pleistocene	0.774 - 0.129	Japan	Spongodiscus helioides (233640 233708 233709 233710 233711 233712)
Middle Pleistocene - Late/Upper Pleistocene	0.774 - 0.0117	Japan	Spongodiscus helioides (233713)