PBDB Taxon

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

Eosphaera

Bivalvia - Lucinida - Lucinidae

Taxonomy

Eosphaera was named by Fürsich et al. (2019). Its type is Sphaera madagascariensis.

It was assigned to Fimbriinae by Fürsich et al. (2019).

Species

E. madagascariensis (syn. Sphaera rogeri)

Synonymy list

Year	Name and author
2019	Eosphaera Fürsich et al. pp. 176 - 178

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Protostomia
—	Spiralia
superphylum	Lophotrochozoa
phylum	Mollusca
class	Bivalvia
—	Eubivalvia
subclass	Autobranchia	(Groblen 1894)

Rank	Name	Author
infraclass	Heteroconchia	(Gray 1854)
—	Cardiomorphi	Ferussac 1822
—	Cardioni	Ferussac 1822
—	Lucinidia	Gray 1854
order	Lucinida	(Stoliczka 1871)
superfamily	Lucinoidea	Fleming 1828
family	Lucinidae	Fleming 1828
subfamily	Fimbriinae	(Nicol 1950)
genus	Eosphaera

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. †Eosphaera Fürsich et al. 2019

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†Eosphaera madagascariensis Newton 1889

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Invalid names: Sphaera rogeri Agrawal 1956 [synonym]

Diagnosis

Reference	Diagnosis
F. T. Fürsich et al. 2019	Thick-shelled, suborbicular, with thick hinge plate. RV with one knob-like cardinal tooth (1), and a subhorizontal cardinal tooth anterior of it (3a), and one long, narrow, inconspicuous posterior lateral tooth. LV with knob-like anterior cardinal (2a), followed dorsally by a shallow groove for 3a. With two anterior lateral teeth, which are terminally connected, and a narrow posteror lateral tooth, situated close to the dorsal margin. Both valves with suborbicular to elongated area ventrally of the posterior lateral tooth with loop-like, rounded ridges.

Measurements

No measurements are available

Composition:

aragonitef

Locomotion:

facultatively mobilef

Life habit:

deep infaunalf

Diet:

chemosymbioticf

Vision:

blindc

Created:

2009-05-17 03:07:50

Modified:

2009-10-09 08:44:03

Source: f = family, c = class

References: Kiessling 2004, Aberhan et al. 2004

Age range: Callovian or 165.30000 to 161.50000 Ma

Collections (4 total)

Time interval	Ma	Country or state	Original ID and collection number
Callovian	165.3 - 161.5	Egypt	Sphaera madagascariensis (171238)
Callovian	165.3 - 161.5	India	Sphaera madagascariensis (67604)
Early/Lower Callovian	165.3 - 161.5	Madagascar	Sphaera sp. (101718)
Early/Lower Callovian	165.3 - 161.5	India	Sphaera madagascariensis (61793)