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Monotis (Entomonotis)

Bivalvia - Pectinida - Monotidae

Synonymy list
YearName and author
1935Monotis (Entomonotis) Marwick
1978Monotis (Entomonotis) Grant-Mackie
1990Monotis (Entomonotis) Grant-Mackie and Silberling
2011Monotis (Entomonotis) McRoberts p. 644

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
phylumMollusca
classBivalvia
—Eubivalvia
subclassAutobranchia(Groblen 1894)
infraclassPteriomorphia(Beurlen 1944)
RankNameAuthor
—OstreomorphiFerussac 1822
—OstreioniFerussac 1822
—OstreataFerussac 1822
superorderOstreiformiiFerussac 1822
orderPectinida(Gray 1854)
suborderAnomiidinaGray 1854
—MonotoideiWaterhouse 2001
familyMonotidaeFischer 1887
genusMonotisBronn 1830
subgenusEntomonotisMarwick 1935

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.

Subg. †Monotis (Entomonotis) Marwick 1935
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†Monotis (Entomonotis) ochotica Keyserling 1848
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Invalid names: Monotis acutecostata Trechmann 1918 [synonym], Monotis ambigua Teller 1886 [synonym], Monotis longa Kiparisova 1932 [synonym], Monotis sparsicostata Teller 1886 [synonym], Monotis wingia Bando 1961 [synonym]
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Invalid names: Monotis aequicostata Kiparisova 1940 [synonym], Monotis eurhachis Teller 1886 [synonym]
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Invalid names: Monotis gigantea Avias 1953 [synonym], Monotis intermedia Trechmann 1918 [synonym], Monotis sibirica Bytschkov 1966 [synonym]
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Invalid names: Monotis semiradiata Ichikawa 1958 [synonym]
Diagnosis
ReferenceDiagnosis
Grant-Mackie and Silberling 1990Medium- to large-size Monotis of obliquely suboval outline. Strongly inequivalve, having a conspicuously inflated left valve, the umbo of which projects dorsally well above the hingeline, and a flat to slightly inflated right valve possessing a much less conspicuous umbo. Posterior ear moderate to proportionally large, smooth, well separated from the rest of the valve by a distinct posterior sinus. Radial ribs relatively broad, rounded, and well differentiated; on some species ribs weaken and fade posteriorly. Concentric striae generally absent or poorly developed.
Measurements
No measurements are available
Composition: low Mg calcitef
Environment: marineo
Locomotion: stationaryf
Life habit: epifaunalo
Diet: suspension feedero
Vision: blindc
Created: 2007-11-26 23:53:43
Modified: 2007-11-27 01:55:28
Source: f = family, o = order, c = class
References: Kiessling 2004, Aberhan et al. 2004

Age range: base of the Illyrian to the top of the Sevatian or 247.20000 to 205.60000 Ma

Collections (81 total)


Time interval Ma Country or state Original ID and collection number
Illyrian247.2 - 242.0USA (Nevada) Monotis subcircularis (142617)
Carnian237.0 - 228.0USA (Alaska) Pseudomonotis subcircularis (112276)
Carnian237.0 - 228.0Canada (British columbia) Monotis subcircularis (43822)
Late/Upper Triassic237.0 - 201.4USA (Alaska) Pseudomonotis subcircularis (112278 112279 112280 112281 112282)
Norian228.0 - 208.5Russian Federation (Primorskiy Kray) Monotis ochotica (98279) Monotis pachypleura, Monotis posteroplana, Monotis subcircularis, Monotis ochotica, Monotis longa, Monotis sparsicostata (97859) Monotis pachypleura, Monotis zabaikalica, Monotis ochotica (97857)
Norian228.0 - 208.5Colombia (Tolima) Monotis subcircularis (101055 101058 101065 101066)
Norian228.0 - 208.5Japan (Kumamoto) Monotis ochotica, Monotis zabaikalica (40216)
Norian228.0 - 208.5Japan (Yamaguchi) Monotis subcycloidea (39645)
Norian228.0 - 208.5Japan (Gifu) Monotis ochotica (39815)
Norian228.0 - 208.5Bolivia (Chuquisaca) Monotis subcircularis (203937)
Norian228.0 - 208.5Peru Entomonotis ochotica (71780 71781)
Norian228.0 - 208.5USA (Alaska) Monotis ochotica (100922) Monotis pachypleura (140036 140037) Monotis pachypleura, Monotis ochotica (85131) Monotis subcircularis (44438) Pseudomonotis subcircularis (112277 112283)
Norian228.0 - 208.5Japan (Miyagi) Monotis ochotica (40034) Monotis ochotica, Monotis zabaikalica (40540)
Norian228.0 - 208.5Japan (Tokyo) Monotis ochotica (40307)
Norian228.0 - 208.5Mexico Monotis subcircularis (131164 131166)
Norian228.0 - 208.5Canada (British Columbia) Monotis pachypleura, Monotis callazonensis, Monotis ochotica (140040) Monotis subcircularis (43825 43830 43832 199710)
Norian228.0 - 208.5Russian Federation Monotis subcircularis (128059) Monotis subcircularis, Monotis ochotica (39309)
Norian228.0 - 208.5Japan (Kochi) Monotis ochotica, Monotis zabaikalica (40472)
Norian228.0 - 208.5Japan (Tokushima) Monotis ochotica, Monotis zabaikalica (40479)
Norian228.0 - 208.5Japan (Okayama) Monotis ochotica (40249)
Norian228.0 - 208.5Peru (Amazonas) Monotis subcircularis (100242)
Lacian221.5 - 215.56Russian Federation Monotis subcircularis, Monotis ochotica (39313) Monotis zabaikalica, Monotis ochotica (39301)
Alaunian - Sevatian215.56 - 205.6Canada (British Columbia) Monotis callazonensis (114956)
Sevatian212.0 - 205.6Russian Federation Monotis ochotica (214908) Monotis posteroplana (214911) Monotis subcircularis, Monotis ochotica (214912) Monotis zabaikalica (214880 214910)
Sevatian212.0 - 205.6New Caledonia Monotis richmondiana (178179 178185)
Sevatian212.0 - 205.6Canada (British Columbia) Monotis ochotica (114927) Monotis posteroplana (115142) Monotis subcircularis (47393 47395 47396 47397 47398 47399 47400 47401 100586)
Sevatian212.0 - 205.6USA (California) Monotis subcircularis (33365)
Sevatian212.0 - 205.6New Zealand Monotis richmondiana (50758)
Sevatian212.0 - 205.6USA (Alaska) Monotis ochotica (82656 97814) Monotis subcircularis (44442)
Sevatian212.0 - 205.6China (Heilongjiang) Monotis baoqingensis, Monotis ochotica (98592) Monotis baoqingensis, Monotis pachypleura, Monotis ochotica (98591)
Sevatian212.0 - 205.6Russian Federation (Primorskiy Kray) Monotis ochotica (98323) Monotis pachypleura, Monotis ochotica (98300) Monotis zabaikalica, Monotis ochotica (97823)
Sevatian212.0 - 205.6USA (Nevada) Pseudomonotis subcircularis (33379)
Warepan212.0 - 205.6New Zealand Monotis intermedia (63953) Monotis richmondiana, Monotis subcircularis (63954)
Warepan212.0 - 205.6New Zealand (Wellington) Monotis ochotica, Monotis ochotica (85018)
Rhaetian208.5 - 201.3Russian Federation Monotis ochotica (214915 214916)