PBDB Taxon

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

Exogyra overwegi

Bivalvia - Ostreida - Gryphaeidae

Taxonomy

Exogyra overwegi was named by von Buch (1852).

It was recombined as Exogyra (Exogyra) overwegi by Buch (1852).

Sister species lacking formal opinion data

E. acroumbonata, E. boveyensis, E. forteaui, E. levis, E. obliquata, E. pellicoi, E. plana, E. raulini, E. texana, Ostrea boussaci

Synonyms

Exogyra decussata was named by Goldfuss (1834).

It was recombined as Amphidonte decussata by Quarto di Palo (1970); it was synonymized subjectively with Exogyra (Exogyra) overwegi by Malchus (1990).
Ostrea fourneti was named by Coquand (1862).

It was synonymized subjectively with Exogyra (Exogyra) overwegi by Malchus (1990).
Exogyra matheroniana was named by Orbigny (1923).

It was synonymized subjectively with Exogyra (Exogyra) overwegi by Malchus (1990).
Ostrea (Exogyra) overwegi was named by Buch (1953).

It was synonymized subjectively with Exogyra (Exogyra) overwegi by Malchus (1990).
Ostrea decussata was named by Coquand (1869).

It was synonymized subjectively with Exogyra decussata by Bobkova (1961).

Synonymy list

Year	Name and author
1834	Exogyra decussata Goldfuss p. 33 figs. Pl. 86, Fig. 11a-c
1852	Exogyra (Exogyra) overwegi Buch
1852	Exogyra overwegi von Buch p. 154 figs. Pl. 1, Fig. 1
1854	Exogyra overwegi von Buch p. 154 figs. Pl. 1, Fig. 1
1862	Ostrea fourneti Coquand
1869	Ostrea decussata Coquand
1923	Exogyra matheroniana Orbigny
1953	Ostrea (Exogyra) overwegi Buch
1970	Amphidonte decussata Quarto di Palo p. 99 figs. Pl. 13, Fig. 5
1970	Exogyra overwegi Quarto di Palo p. 101 figs. Pl. 13, Fig. 8-9

Is something missing? Join the Paleobiology Database and enter the data

Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Protostomia
—	Spiralia
superphylum	Lophotrochozoa
phylum	Mollusca
class	Bivalvia
—	Eubivalvia
subclass	Autobranchia	(Groblen 1894)
infraclass	Pteriomorphia	(Beurlen 1944)

Rank	Name	Author
—	Ostreomorphi	Ferussac 1822
—	Ostreioni	Ferussac 1822
—	Ostreata	Ferussac 1822
superorder	Ostreiformii	Ferussac 1822
order	Ostreida	(Fërussac 1822)
suborder	Ostreidina	(Ferussac 1822)
superfamily	Ostreoidea	(Rafinesque 1815)
family	Gryphaeidae	Vialov 1936
subfamily	Exogyrinae	Vialov 1936
genus	Exogyra	Say 1820
species	overwegi	von Buch 1852

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.

†Exogyra overwegi von Buch 1852

show all | hide all

Invalid names: Exogyra decussata Goldfuss 1834 [synonym], Exogyra matheroniana Orbigny 1923 [synonym], Ostrea (Exogyra) overwegi Buch 1953 [synonym], Ostrea fourneti Coquand 1862 [synonym]

Diagnosis

No diagnoses are available

Measurements

No measurements are available

Composition:

low Mg calcitef

Environment:

marine, brackisho

Locomotion:

stationaryf

Attached:

yesf

Life habit:

epifaunalf

Diet:

suspension feederf

Vision:

blindc

Created:

2007-09-26 08:05:58

Modified:

2009-08-18 19:34:53

Source: f = family, o = order, c = class

References: Aberhan et al. 2004, Kiessling 2004, Steuber 2002

Age range: base of the Campanian to the top of the Early/Lower Maastrichtian or 83.60000 to 66.00000 Ma

Collections (34 total)

Time interval	Ma	Country or state	Original ID and collection number
Senonian	100.5 - 66.0	Afghanistan (Takhar)	Amphidonte decussata (78082) Exogyra overwegi (78083)
Campanian	83.6 - 72.2	Afghanistan	Exogyra decussata (186344)
Campanian	83.6 - 72.2	Tunisia	Exogyra overwegi (185652)
Campanian	83.6 - 72.2	Algeria	Exogyra overwegi (185645)
Late/Upper Campanian - Maastrichtian	83.6 - 66.0	Libya	Exogyra overwegi (185660)
Early/Lower Maastrichtian	72.2 - 66.0	Afghanistan	Exogyra decussata (186345)
Late/Upper Maastrichtian	72.2 - 66.0	Egypt (Western Desert)	Exogyra overwegi (3129 3139 3140 3144 3145 3148 3154 3155)
Late/Upper Maastrichtian	72.2 - 66.0	Kazakhstan (Kustanai)	Amphidonte decussata (186859 186878)
Maastrichtian	72.2 - 66.0	Tunisia	Exogyra overwegi (1365 185653)
Maastrichtian	72.2 - 66.0	Bulgaria	Amphidonte decussata (1332)
Maastrichtian	72.2 - 66.0	Oman	Exogyra overwegi (1381)
Maastrichtian	72.2 - 66.0	Libya	Exogyra overwegi (1370)
Maastrichtian	72.2 - 66.0	Egypt	Exogyra overwegi (1363 46601 185819 185823 185825)
Maastrichtian	72.2 - 66.0	Netherlands	Amphidonte decussata (1326)
Maastrichtian	72.2 - 66.0	Turkey	Exogyra overwegi (1398)
Maastrichtian	72.2 - 66.0	Ukraine	Exogyra decussata (47061)
Maastrichtian	72.2 - 66.0	Algeria	Exogyra overwegi (1344 185646)
Maastrichtian	72.2 - 66.0	Germany	Amphidonte decussata (1390)
Maastrichtian	72.2 - 66.0	South Africa	Amphidonte decussata (1355)