PBDB Taxon

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

Brachidontes (Scolimytilus) margaritana

Bivalvia - Mytilida - Mytilidae

Taxonomy

Septifer margaritana was named by Nomland (1917). Its type specimen is UCMP 11310 and is a 3D body fossil. Its type locality is UCMP loc. 2276, which is in a Miocene marine sandstone in the Santa Margarita Formation of California.

It was corrected as Septifer margaritanus by Grant and IV and Gale (1931); it was recombined as Brachidontes (Scolimytilus) margaritana by Moore (1983).

Sister species lacking formal opinion data

B. araripensis, B. arcturusensis, B. arlingtonanus, B. biali, B. briarti, B. charmesi, B. ciplyana, B. citrinus, B. corrugatus, B. cossmanni, B. crebristriatus, B. crenulata, B. filisculptus, B. filisculptus microcostae, B. fulpensis, B. granulata, B. guppyi, B. jeremejewi, B. kamtschaticus, B. kovatschensis, B. lineatus, B. linguatulus, B. marginatus, B. mashikensis, B. matchgaransis, B. montensis, B. multilingera, B. nankoi, B. nonbifurcus, B. ogasawarai, B. potomacensis, B. purpuratus, B. pyriformis, B. radiatula, B. rigaulti, B. saffordi, B. sahaleurai, B. sakakurai, B. senegalensis, B. somalicus, B. stubbsi, B. suberosus, B. taurinensis, B. tenuisculpta, B. texanus, B. vectiensis, B. couloni, B. subpectinatus, B. fulpensis, B. grammatus, B. ortmanni, B. purpuratus, B. rodriguezi, B. vetustus

Synonymy list

Year	Name and author
1917	Septifer margaritana Nomland pp. 308 - 309 figs. Plate 19, figure 5
1931	Septifer margaritanus Grant, IV and Gale p. 248
1983	Brachidontes (Scolimytilus) margaritana Moore p. A69 figs. Plate 17, figure 13

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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	Pteriomorphia	(Beurlen 1944)
—	Mytilomorphi	Ferussac 1822
order	Mytilida	(Rafinesque 1815)
superfamily	Mytiloidea	Rafinesque 1815
family	Mytilidae	Rafinesque 1815
subfamily	Mytilinae	Rafinesque 1815
genus	Brachidontes	Swainson 1840
subgenus	Scolimytilus	(Olsson 1961)
species	margaritana	()

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.

†Brachidontes (Scolimytilus) margaritana Nomland 1917

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Diagnosis

No diagnoses are available

Measurements

No measurements are available

Composition:

aragoniteg

Entire body:

yesf

Adult length:

10 to < 100f

Adult width:

10 to < 100f

Adult height:

10 to < 100f

Thickness:

intermediatef

Folds:

nonef

Ribbing:

minorf

Spines:

nonef

Internal reinforcement:

nonef

Ontogeny:

accretionf

Environment:

lagoonal, coastal, inner shelf, outer shelf, oceanic, brackish, freshwaterf

Locomotion:

stationaryg

Attached:

yesg

Life habit:

epifaunalg

Diet:

suspension feederg

Vision:

blindc

Created:

2009-09-09 08:23:52

Modified:

2009-09-09 10:23:52

Source: g = genus, f = family, c = class

References: Sanchez Roig 1926, Kiessling 2004, Aberhan et al. 2004

Age range: Late/Upper Miocene or 11.63000 to 5.33300 Ma

Collections: one only

Time interval	Ma	Country or state	Original ID and collection number
Late/Upper Miocene	11.63 - 5.333	USA (California)	Septifer margaritana (type locality: 216199)