PBDB Taxon

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Lithatractus

Protozoa - Spumellaria

Taxonomy

Lithatractus is a genus. It is extant.

It was assigned to Spumellaria by Sepkoski (2002).

Species

L. brevispinus, L. mejeri, L. perforatus, L. pusillus

Synonyms

Lithatractus brevispinus was named by Rüst (1892). It is not extant.

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

It was considered a nomen dubium by Aitchison et al. (2017).
Lithatractus perforatus 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
1892	Lithatractus brevispinus Rüst
1892	Lithatractus mejeri Rüst
1892	Lithatractus perforatus Rüst
2002	Lithatractus 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	Lithatractus

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. Lithatractus

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†Lithatractus pusillus Campbell and Clark 1944

Invalid names: Lithatractus brevispinus Rüst 1892 [nomen dubium], Lithatractus mejeri Rüst 1892 [nomen dubium], Lithatractus perforatus 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: base of the Early/Lower Barremian to the top of the Danian or 130.00000 to 61.60000 Ma

Collections (55 total)

Time interval	Ma	Country or state	Original ID and collection number
Early/Lower Barremian	130.0 - 125.45	Italy	L. pusillus (49127)
Early/Lower Turonian	93.5 - 89.3	Canada (Nunavut)	Stylosphaera pusilla (165998)
Middle Turonian	93.5 - 89.3	Canada (Nunavut)	Stylosphaera pusilla (165999)
Coniacian	89.8 - 86.3	Japan (Hokkaido)	L. pusillus (96027 96029 96030 96032 96033)
Santonian	86.3 - 83.6	Japan (Hokkaido)	L. pusillus (96034 96035 96036 96037 96038 96039 96040 96041) L. pussillus (95788)
Santonian - Early/Lower Campanian	86.3 - 70.6	Russian Federation (Tambov)	L. pusillus (95159)
Campanian	83.6 - 72.1	Japan (Hokkaido)	L. pusillus (96045)
Early/Lower Campanian	83.5 - 70.6	Japan (Hokkaido)	L. pussillus (95789)
Late/Upper Campanian	83.5 - 70.6	North Pacific	Praestylosphaera pusilla (95806)
Middle Campanian - Late/Upper Campanian	83.5 - 70.6	Japan (Hokkaido)	L. pussillus (95790)
Early/Lower Maastrichtian	70.6 - 66.0	Japan (Hokkaido)	L. pussillus (95791)
Late/Upper Maastrichtian	70.6 - 66.0	New Zealand (Marlborough)	Stylosphaera pusilla (95846 95884 95885 95886 95887 95888)
Late/Upper Maastrichtian	70.6 - 66.0	Japan (Hokkaido)	L. pussillus (95792)
Danian	66.0 - 61.6	New Zealand (Marlborough)	Stylosphaera pusilla (95858 95860 95866 95870 95873 95875 95877 95878 95880 95881 95882 95883 95890 95891 95892 95893 95894 95895 95896 95897 95901 95902 95903 95904 95907)