Monitilora sepes ( Barnard, 1964 ), Inhaca

Taylor, John D. & Glover, Emily A., 2018, Hanging on - lucinid bivalve survivors from the Paleocene and Eocene in the western Indian Ocean (Bivalvia: Lucinidae), Zoosystema 40 (7), pp. 123-142: 136-138

publication ID

http://doi.org/ 10.5252/zoosystema2018v40a7

publication LSID

lsid:zoobank.org:pub:urn:lsid:zoobank.org:pub:7652DEC7-3C6C-414F-AF2C-7C396D78F6F6

DOI

http://doi.org/10.5281/zenodo.3811349

persistent identifier

http://treatment.plazi.org/id/03858788-FFCA-F16D-FC2E-F9BE4B4DFBE3

treatment provided by

Felipe

scientific name

Monitilora sepes ( Barnard, 1964 )
status

 

Monitilora sepes ( Barnard, 1964)  

( Fig. 8E-Q View FIG )

Phacoides sepes Barnard, 1964: 25   , fig. 6b.

Gonimyrtea sepes   – Kilburn 1973: 701.

Monitilora sepes   – Huber 2015: 445.

TYPE MATERIAL. — 3 syntypes ( SAM A9529)   .

TYPE LOCALITY. — Off Morewood Cove, Natal, 27 fms (49 m).

MATERIAL EXAMINED. — Mozambique. Inhaca Island, Sud Ponta Abril , Expédition INHACA, 2011 stn MD17, 26°09.1’S, 32°58.0’E, 33 -39 m, 3 v, 01.12.2011 ( MNHN) GoogleMaps   . Inhaca Island, devant La Passe, Expédition INHACA, stn MD11, 26°04.8’S, 32°59’E, 24 -32 m, 5 v, 30.XI.2011 ( MNHN) GoogleMaps   . Devant La Passe, stn MD15, 26°05.0’S, 32°59’E, 35 m, 5 v, 01.XII.2011 ( MNHN) GoogleMaps   .

South Madagascar. Expédition ATIMO VATAE, secteur de Lavanono, stn BP34, 25°25.8’S, 44°55.4’E, 14 -15 m, 1 pv ( L 13.9 mm) ( MNHN). GoogleMaps  

DESCRIPTION

Shell white, subcircular, L to 15 mm, moderately inflated, light-shelled, posterior dorsal area shallowly demarcated. Sculpture of fine, low, closely spaced, commarginal lamellae, interspaces with radial riblets. Protoconch PI + PII = 264 µm, P II a narrow 17 µm rim ( Fig. 8Q View FIG ). Lunule short, scooped. Hinge plate narrow, RV with single small cardinal tooth and a small anterior lateral tooth, LV with two small cardinal teeth. the posteriormost longer and thinner, no lateral teeth. Anterior adductor scar medium length, detached for ½ of length, dorsal part much broader than ventral extension. Pallial line entire, shell margin smooth.

REMARKS

In the original description this species was poorly illustrated with only drawings of the hinge of one valve and a small portion of shell sculpture. It is therefore unsurprising that its affinities remained uncertain. The shell sculpture and hinge match with the shells from the Inhaca samples and placement in Monitilora   can be confirmed. Huber’s (2015) generic assignment followed advice from present authors. The Mozambique and Natal records are distant from other recorded Monitilora   species from eastern Australia, Philippines, Thailand and southern India and represent a considerable range extension for the genus. Apart from the eastern Australian M. ramsayi   , shells are rarely present in museum collections.

SAM

Australia, South Australia, Adelaide, South Australian Museum

SAM

South African Museum

MNHN

Museum National d'Histoire Naturelle

Kingdom

Animalia

Phylum

Mollusca

Class

Bivalvia

Order

Lucinoida

Family

Lucinidae

Genus

Monitilora

Loc

Monitilora sepes ( Barnard, 1964 )

Taylor, John D. & Glover, Emily A. 2018
2018
Loc

Monitilora sepes

HUBER M. 2015: 445
2015
Loc

Gonimyrtea sepes

KILBURN R. N. 1973: 701
1973
Loc

Phacoides sepes

BARNARD K. H. 1964: 25
1964