PBDB Taxon

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Porosoma

Echinoidea - Phymosomatidae

Taxonomy

Porosoma was named by Cotteau (1856) [Sepkoski's age data: K Nc T Ol-l]. It is not extant. Its type is Cyphosoma cribrum.

It was assigned to Phymosomatidae by Fell and Pawson (1966), Wagner (1972), Geys (1980); and to Phymosomatoida by Sepkoski (2002).

Species

Cyphosoma (Coptosoma) singulare, P. cribrum, P. fifei, P. lamberti, P. maeandrinum, P. reesidei

Species lacking formal opinion data

P. batalleri, P. cribrun, P. faurai

Synonyms

Microsoma was named by Cotteau (1886).

It was synonymized subjectively with Porosoma by Mortensen (1935).

It was assigned to Echinidae by Cooke (1941).
Coptosoma was named by Desor (1855).

It was reranked as Cyphosoma (Coptosoma) by Böhm (1891); it was replaced with Porosoma by Cooke (1953), Geys (1980).

It was assigned to Cyphosoma by Böhm (1891); and to Cyphosomatidae by Clark and Twitchell (1915).

Synonymy list

Year	Name and author
1855	Coptosoma Desor
1856	Porosoma Cotteau
1886	Microsoma Cotteau p. 715
1891	Cyphosoma (Coptosoma) Böhm p. 96
1915	Coptosoma Clark and Twitchell p. 61
1941	Microsoma Cooke p. 12
1966	Porosoma Fell and Pawson p. U402
1972	Porosoma Wagner p. 652
1980	Porosoma Geys p. 218
2002	Porosoma Sepkoski

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

Rank	Name	Author
class	Echinoidea	()
subclass	Euechinoidea	Bronn 1860
superorder	Acroechinoidea	()
—	Carinacea
—	Calycina	(Gregory 1900)
suborder	Phymosomatoida	()
family	Phymosomatidae
genus	Porosoma	Cotteau 1856

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. †Porosoma Cotteau 1856

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†Porosoma cribrum Agassiz 1840

†Porosoma fifei Wagner 1972

†Porosoma lamberti Checchia-Rispoli 1950

†Porosoma maeandrinum Schluter 1881

†Porosoma reesidei Cooke 1953

Invalid names: Coptosoma Desor 1855 [replaced], Microsoma Cotteau 1886 [synonym]

Diagnosis

No diagnoses are available

Measurements

No measurements are available

Composition:

high Mg calcitesubo

Ontogeny:

accretion, addition of partsp

Environment:

marinep

Locomotion:

slow-movingsubo

Life habit:

low-level epifaunalsubo

Diet:

omnivoresubo

Vision:

limitedc

Dispersal:

waterp

Dispersal 2:

planktonicp

Created:

2004-02-29 10:30:22

Modified:

2009-12-13 03:47:39

Source: subo = suborder, c = class, p = phylum

References: Aberhan et al. 2004, Kiessling 2004, Aberhan 1992

Age range: base of the Valanginian to the top of the Priabonian or 137.05000 to 33.90000 Ma

Collections (19 total)

Time interval	Ma	Country or state	Original ID and collection number
Valanginian	137.05 - 132.6	Switzerland	P. sp. (2247)
Coniacian	89.8 - 85.7	Spain	P. faurai (66964)
Early/Lower Coniacian	89.8 - 85.7	USA (Wyoming)	P. reesidei (78100 197076)
Middle Coniacian	89.8 - 85.7	USA (Wyoming)	P. sp. (87760)
Late/Upper Coniacian - Santonian	89.8 - 83.6	Spain	P. sp. (66968 66969)
Santonian	85.7 - 83.6	Spain	P. sp. (66983)
Late/Upper Campanian	83.6 - 72.2	Spain	P. batalleri (67002)
Early/Lower Maastrichtian	72.2 - 66.0	Germany	Cyphosoma singulare (213668)
Late/Upper Maastrichtian	72.2 - 66.0	Netherlands (Limburg)	P. maeandrinum (3908)
Late/Upper Maastrichtian	72.2 - 66.0	Netherlands	Phymosoma maeandrinum (196831) P. maeandrinum (3915)
Paleocene	66.0 - 56.0	Mexico (Baja California)	P. fifei (90059)
Lutetian	48.07 - 41.03	Qatar	P. lamberti (209101 209104)
Lutetian	48.07 - 41.03	Türkiye	P. cribrun (40793)
Bartonian	41.03 - 37.71	United Kingdom (England)	P. sp. (8024)
Priabonian	37.71 - 33.9	Italy	P. cribrum (81043)