PBDB

Basic info	Taxonomic history	Classification	Relationships
Morphology	Ecology and taphonomy		Age range and collections

Leukoma

Bivalvia - Cardiida - Veneridae

Taxonomy

Leukoma was named by Römer (1857). It is extant.

It was reranked as Protothaca (Leukoma) by Todd (2001).

It was assigned to Protothaca by Todd (2001); and to Venerinae by Coan and Valentich-Scott (2012).

Species

Ameghinomya antiqua (syn. Chione pampeana), Ameghinomya coquandi, Ameghinomya meridonalis, L. asperrima, L. beili, L. columbiensis, L. dolicha, L. ecuadoriana, L. grata, L. histrionica, L. lacinata, L. metodon (syn. Nioche (Nioche) mcgintyi, Nioche (Nioche) zorritensis), L. pertincta, L. staminea (syn. Protothaca ruderata), L. thaca, Protothaca (Protothaca), Protothaca (Tropithaca) seymourensis, Protothaca staleyi

View classification of included taxa

Synonyms

Nioche (Antinioche) was named by Olsson (1961). It is extant.

It was Protothaca (Antinioche) by Todd (2001); it was reranked as Antinioche by Sepkoski (2002); it was synonymized subjectively with Leukoma by Coan and Valentich-Scott (2012).

It was assigned to Nioche by Woodring (1982); to Protothaca by Todd (2001); and to Veneroida by Sepkoski (2002).
Chione (Ameghinomya) was named by Ihering (1907) [Sepkoski's age data: T Dani T Mi-m Sepkoski's reference number: 914].

It was reranked as Ameghinomya by Gordillo (1991), Sepkoski (2002) and Griffin and Nielsen (2008); it was synonymized subjectively with Leukoma by Coan and Valentich-Scott (2012).

It was assigned to Chione by Ihering (1907); to Veneroida by Sepkoski (2002); and to Veneridae by Gordillo (1991) and Griffin and Nielsen (2008).
Notochione was named by Hertlein and Strong (1948) [Sepkoski's age data: T Ng R]. It is extant.

It was reranked as Protothaca (Notochione) by Todd (2001); it was synonymized subjectively with Leukoma by Coan and Valentich-Scott (2012).

It was assigned to Protothaca by Todd (2001); and to Veneroida by Sepkoski (2002).
Protothaca was named by Dall (1902) [Sepkoski's age data: T Mi-m R Sepkoski's reference number: 1112]. It is extant.

It was synonymized subjectively with Leukoma by Coan and Valentich-Scott (2012).

It was assigned to Venerinae by da Silva Forti (1969); to Veneridae by Todd (2001); to Veneroida by Sepkoski (2002); and to Chioninae by Beu (2006).
Colonche was named by Olsson (1961). It is extant.

It was synonymized subjectively with Leukoma by Coan and Valentich-Scott (2012).
Tropithaca was named by Olsson (1961).

It was reranked as Protothaca (Tropithaca) by Hertlein (1972) and Todd (2001); it was synonymized subjectively with Protothaca by Coan et al. (2000); it was synonymized subjectively with Leukoma by Coan and Valentich-Scott (2012).

It was assigned to Protothaca by Hertlein (1972) and Todd (2001).

Synonymy list

Year	Name and author
1857	Leukoma Römer
1902	Protothaca Dall p. 364
1907	Chione (Ameghinomya) Ihering p. 306
1948	Notochione Hertlein and Strong
1961	Colonche Olsson
1961	Nioche (Antinioche) Olsson
1961	Tropithaca Olsson
1969	Protothaca da Silva Forti p. 86
1972	Protothaca (Tropithaca) Hertlein p. 35
1982	Nioche (Antinioche) Woodring p. 707
1991	Ameghinomya Gordillo p. 129
2001	Protothaca Todd
2001	Protothaca (Antinioche) Todd
2001	Protothaca (Leukoma) Todd
2001	Protothaca (Notochione) Todd
2001	Protothaca (Tropithaca) Todd
2002	Ameghinomya Sepkoski, Jr.
2002	Antinioche Sepkoski, Jr.
2002	Notochione Sepkoski, Jr.
2002	Protothaca Sepkoski, Jr.
2006	Protothaca Beu p. 277
2008	Ameghinomya Griffin and Nielsen
2012	Leukoma Coan and Valentich-Scott p. 771

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Protostomia
—	Spiralia
—	Schizocoela
phylum	Mollusca
class	Bivalvia
—	Eubivalvia
subclass	Autobranchia	(Groblen 1894)
infraclass	Heteroconchia	(Cox 1960)
—	Cardiomorphi	Ferussac 1822

Rank	Name	Author
—	Cardioni	Ferussac 1822
—	Cardiidia	Ferussac 1822
—	Cardiata	Ferussac 1822
superorder	Cardiiformii	Ferussac 1822
order	Cardiida	Ferussac 1822
suborder	Cardiidina	Ferussac 1822
—	Veneroidei	(Gray 1854)
—	Veneroitei	Gray 1854
superfamily	Veneroidea	(Rafinesque 1815)
family	Veneridae	Rafinesque 1815
subfamily	Venerinae	Rafinesque 1815
genus	Leukoma	Römer 1857

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.

Diagnosis

No diagnoses are available