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Brachidontes (Brachidontes) lawsoni

Bivalvia - Mytilida - Mytilidae

Taxonomy
Modiolus lawsoni was named by Nelson (1925). Its type specimen is UC 30651, a shell, and it is a 3D body fossil. Its type locality is UCMP loc. 4004, Simi Hills, which is in a Thanetian marine siliciclastic in the Santa Susana Formation of California.

It was recombined as Brachidontes lawsoni by Compton (1944), Smith (1975); it was recombined as Brachidontes (Brachidontes) lawsoni by Moore (1983).

Synonymy list
YearName and author
1925Modiolus lawsoni Nelson p. 408 figs. pl. 50, figs. 3, 4
1944Brachidontes lawsoni Compton p. 467
1975Brachidontes lawsoni Smith p. 470
1983Brachidontes (Brachidontes) lawsoni Moore p. A68 figs. Plate 17, figure 5

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
phylumMollusca
classBivalvia
—Eubivalvia
subclassAutobranchia(Groblen 1894)
RankNameAuthor
infraclassPteriomorphia(Beurlen 1944)
—MytilomorphiFerussac 1822
orderMytilida(Rafinesque 1815)
superfamilyMytiloideaRafinesque 1815
familyMytilidaeRafinesque 1815
subfamilyMytilinaeRafinesque 1815
genusBrachidontesSwainson 1840
subgenusBrachidontesSwainson 1840
specieslawsoni()

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.

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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: 2007-11-26 08:33:37
Modified: 2009-08-18 19:39:33
Source: g = genus, f = family, c = class
References: Kiessling 2004, Aberhan et al. 2004

Age range: base of the Selandian to the top of the Thanetian or 61.66000 to 56.00000 Ma

Collections (5 total)


Time interval Ma Country or state Original ID and collection number
Paleocene66.0 - 56.0USA (California) Brachidontes lawsoni (11117)
Selandian61.66 - 59.24USA (California) Brachidontes lawsoni (205398)
Thanetian59.24 - 56.0USA (California) Brachidontes lawsoni (52596 52599) Modiolus lawsoni (239715)