PBDB Taxon

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

Prenaster

Echinoidea - Spatangoida - Schizasteridae

Taxonomy

Prenaster was named by Desor (1853) [Sepkoski's age data: T Eo-l T Eo-u Sepkoski's reference number: 956,1242].

It was assigned to Schizasteridae by Fischer (1966), Henderson (1975), Kier (1984); and to Spatangoida by Sepkoski (2002).

Species

P. (Prenaster), P. clarki, P. elongatus, P. parvus, P. sanchezi, P. synapticus, Saviniaster

Species lacking formal opinion data

P. boninensis

Sister genera

Saviniaster

Synonyms

Protenaster was named by Pomel (1883) [Sepkoski's age data: T Eo-u R]. It is extant.

It was reranked as Prenaster (Protenaster) by Fischer (1966); it was synonymized subjectively with Prenaster by Henderson (1975).

It was assigned to Prenaster by Fischer (1966); and to Spatangoida by Sepkoski (2002).
Prenaster clarcki was named by Sanchez Roig (1949).

It was considered a nomen dubium by Kier (1984).
Prenaster elongatus was named by Sanchez Roig (1949).

It was considered a nomen dubium by Kier (1984).
Prenaster sanchezi was named by Lambert (1949).

It was considered a nomen dubium by Kier (1984).

Synonymy list

Year	Name and author
1853	Prenaster Desor p. 279
1883	Protenaster Pomel p. 36
1949	Prenaster sanchezi Lambert
1949	Prenaster clarcki Sanchez Roig
1949	Prenaster elongatus Sanchez Roig
1966	Prenaster Fischer p. U576
1966	Prenaster (Protenaster) Fischer p. U576
1975	Prenaster Henderson p. 19
1984	Prenaster Kier p. 77
2002	Prenaster Sepkoski
2002	Protenaster Sepkoski

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Deuterostomia
—	Ambulacraria
phylum	Echinodermata
subphylum	Eleutherozoa
—	Echinozoa	()
class	Echinoidea	()

Rank	Name	Author
subclass	Euechinoidea	Bronn 1860
superorder	Acroechinoidea	()
—	Carinacea
—	Irregularia	()
—	Atelostomata
order	Spatangoida
suborder	Paleopneustina
family	Schizasteridae	()
genus	Prenaster	Desor 1853

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. †Prenaster Desor 1853

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Subg. Prenaster (Prenaster) Fischer 1966

†Prenaster parvus Palmer 1949

†Prenaster synapticus Henderson 1975

G. †Saviniaster Lambert 1911

Invalid names: Prenaster clarki Sanchez Roig 1949 [nomen dubium], Prenaster elongatus Sanchez Roig 1949 [nomen dubium], Prenaster sanchezi Lambert 1949 [nomen dubium], Protenaster Pomel 1883 [synonym]

Diagnosis

No diagnoses are available

Measurements

No measurements are available

Composition:

high Mg calciteo

Ontogeny:

accretion, addition of partsp

Environment:

marineo

Locomotion:

slow-movingo

Life habit:

shallow infaunalo

Diet:

deposit feedero

Diet 2:

detritivoreo

Vision:

limitedc

Dispersal:

watero

Dispersal 2:

planktonico

Created:

2004-02-28 12:18:10

Modified:

2009-10-08 16:32:56

Source: o = order, c = class, p = phylum

References: Aberhan 1992, Kiessling 2004

Age range

Maximum range based only on fossils: base of the Lutetian to the top of the Langhian or 48.07000 to 13.82000 Ma
Minimum age of oldest fossil (stem group age): 41.03 Ma

Collections (2 total)

Time interval	Ma	Country or state	Original ID and collection number
Lutetian	48.07 - 41.03	Japan	P. boninensis (204382)
Langhian	15.98 - 13.82	Australia (South Australia)	Protenaster antiaustralis (88322)