PBDB Taxon

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

Oscillopha dichotoma

Bivalvia - Ostreida - Ostreidae

Taxonomy

Ostrea dichotoma was named by Bayle (1849).

It was recombined as Lopha (Lopha) dichotoma by Bobkova (1961); it was recombined as Oscillopha dichotoma by Malchus (1990), Cooper (2003).

Sister species lacking formal opinion data

O. arzipensis, O. hermanii, O. semiarmata, O. syphax

Synonyms

Ostrea armata was named by Goldfuss (1866).

It was synonymized subjectively with Oscillopha dichotoma by Malchus (1990).
Ostrea acanthonata was named by Coquand (1869).

It was synonymized subjectively with Oscillopha dichotoma by Malchus (1990).
Ostrea sollieri was named by Coquand (1869).

It was synonymized subjectively with Oscillopha dichotoma by Malchus (1990).
Alectryonia semiplana was named by Sowerby (1825).

It was synonymized subjectively with Oscillopha dichotoma by Malchus (1990).
Lopha dichotoma was named by Bayle (1849).

It was synonymized subjectively with Oscillopha dichotoma by Malchus (1990).
Alectryonia dichotoma was named by Bayle (1912).

It was synonymized subjectively with Oscillopha dichotoma by Malchus (1990).

Synonymy list

Year	Name and author
1825	Alectryonia semiplana Sowerby
1849	Lopha dichotoma Bayle
1849	Ostrea dichotoma Bayle
1866	Ostrea armata Goldfuss
1869	Ostrea acanthonata Coquand
1869	Ostrea sollieri Coquand
1912	Alectryonia dichotoma Bayle
1930	Alectryonia semiplana Lombard p. 309 figs. Pl 32, fig 6
1961	Lopha (Lopha) dichotoma Bobkova
1990	Oscillopha dichotoma Malchus
2003	Oscillopha dichotoma Cooper p. 151 fig. 3E,F

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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)
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	Ostreidae	Rafinesque 1815
genus	Oscillopha	Malchus 1990
species	dichotoma	(Bayle 1849)

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.

†Oscillopha dichotoma Bayle 1849

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Invalid names: Alectryonia dichotoma Bayle 1912 [synonym], Alectryonia semiplana Sowerby 1825 [synonym], Lopha dichotoma Bayle 1849 [synonym], Ostrea acanthonata Coquand 1869 [synonym], Ostrea armata Goldfuss 1866 [synonym], Ostrea sollieri Coquand 1869 [synonym]

Diagnosis

No diagnoses are available

Measurements

No measurements are available

Composition:

low Mg calcitef

Environment:

hypersaline, marine, brackishf

Locomotion:

stationaryf

Attached:

yesf

Life habit:

epifaunalf

Diet:

suspension feederf

Vision:

blindc

Created:

2005-01-28 02:24:48

Modified:

2009-08-18 19:08:01

Source: f = family, c = class

References: Aberhan et al. 2004, Kiessling 2003

Age range: base of the Cenomanian to the top of the Maastrichtian or 100.50000 to 66.00000 Ma

Collections (25 total)

Time interval	Ma	Country or state	Original ID and collection number
Cenomanian	100.5 - 93.9	Afghanistan	Lopha dichotoma (186338)
Late/Upper Turonian	93.9 - 89.8	Afghanistan	Lopha dichotoma (186341)
Middle Turonian	93.9 - 89.8	Afghanistan	Lopha dichotoma (186340)
Coniacian	89.8 - 85.7	Tunisia	Oscillopha dichotoma (185650)
Coniacian	89.8 - 85.7	Afghanistan	Lopha dichotoma (186342)
Coniacian	89.8 - 85.7	Algeria	Oscillopha dichotoma (185640)
Late/Upper Coniacian	89.8 - 85.7	Egypt	Oscillopha dichotoma (185810)
Coniacian - Santonian	89.8 - 83.6	Egypt	Oscillopha dichotoma (114826 114908)
Late/Upper Santonian	85.7 - 83.6	Congo-Brazzaville	Alectryonia semiplana (209620)
Middle Santonian	85.7 - 83.6	Angola	Oscillopha dichotoma (210904)
Santonian	85.7 - 83.6	Algeria	Oscillopha dichotoma (185644)
Santonian	85.7 - 83.6	Tunisia	Oscillopha dichotoma (185651)
Campanian	83.6 - 72.2	Hungary	Lopha dichotoma (74809)
Campanian	83.6 - 72.2	Algeria	Oscillopha dichotoma (185645)
Campanian	83.6 - 72.2	Tunisia	Oscillopha dichotoma (185652)
Late/Upper Campanian - Maastrichtian	83.6 - 66.0	Libya	Oscillopha dichotoma (185660)
Maastrichtian	72.2 - 66.0	Somalia	Oscillopha dichotoma (1399)
Maastrichtian	72.2 - 66.0	Oman	Oscillopha dichotoma (1381)
Maastrichtian	72.2 - 66.0	Tunisia	Oscillopha dichotoma (1365)
Maastrichtian	72.2 - 66.0	Madagascar	Oscillopha dichotoma (1322)
Maastrichtian	72.2 - 66.0	Egypt	Oscillopha dichotoma (1363)
Maastrichtian	72.2 - 66.0	Saudi Arabia	Oscillopha dichotoma (1335)
Maastrichtian	72.2 - 66.0	Iran	Oscillopha dichotoma (1383)
Maastrichtian	72.2 - 66.0	Libya	Oscillopha dichotoma (1370)