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Glycymerita
Taxonomy
Glycymerita was named by Finlay and Marwick (1937) [Sepkoski's age data: K Maes T Plio-u Sepkoski's reference number: 991]. Its type is Glycymeris concava.
It was reranked as Glycymeris (Glycymerita) by Fleming (1966), Moore (1983), Squires (1984), Covacevich and Frassinetti (1986), Squires (1987), Squires (1988), del Rio (1992), Squires and Demetrion (1992).
It was assigned to Glycymeris by Fleming (1966), Moore (1983), Squires (1984), Covacevich and Frassinetti (1986), Squires (1987), Squires (1988), del Rio (1992), Squires and Demetrion (1992); to Arcoida by Sepkoski (2002); and to Glycymeridinae by Vokes (1980), Stilwell (1998), Squires (2010).
It was reranked as Glycymeris (Glycymerita) by Fleming (1966), Moore (1983), Squires (1984), Covacevich and Frassinetti (1986), Squires (1987), Squires (1988), del Rio (1992), Squires and Demetrion (1992).
It was assigned to Glycymeris by Fleming (1966), Moore (1983), Squires (1984), Covacevich and Frassinetti (1986), Squires (1987), Squires (1988), del Rio (1992), Squires and Demetrion (1992); to Arcoida by Sepkoski (2002); and to Glycymeridinae by Vokes (1980), Stilwell (1998), Squires (2010).
Species
Glycymeris (Glycymerita) anae, Glycymeris (Glycymerita) apletos, Glycymeris (Glycymerita) ibariformis, Glycymeris (Glycymerita) magna, Glycymeris (Glycymerita) reefensis, Glycymeris (Glycymerita) sagittata, Glycymeris (Glycymerita) tecolotensis, G. (Glycymerita), G. aleuta, G. banosensis, G. concava, G. gigantica, G. major (syn. Glycymeris maccrayi), G. robusta, G. sagittata, G. veatchii (syn. Glycymeris apletos, Glycymeris shastensis, Glycymeris suciensis, Glycymeris pentzana)
Species lacking formal opinion data
Glyceris hokkaidoensis, Glycymeris aglikitschensis, Glycymeris amakusensis, Glycymeris camaronesia, Glycymeris haipensis, Glycymeris himenourensis, Glycymeris japonica, Glycymeris japonica, Glycymeris katsurazawensis, Glycymeris marrotiana, Glycymeris marrotianus, Glycymeris matsumotoi, Glycymeris sachalinensis, Glycymeris selwynensis, Glycymeris solida, Glycymeris subglobosa, Glycymeris sublaevis, G. africana, G. camaronesia, G. costata, G. cuevensis, G. feruglioi, G. feruglioli, G. hungaricus, G. hurupiensis, G. japonica, G. manaiaensis, G. marrotianus, G. merenskyi, G. microsulci, G. rotundata, G. selwynensis, G. subauriculata, G. sublaevis, G. subplanata, G. umbonata
Synonymy list
| Year | Name and author |
|---|---|
| 1937 | Glycymerita Finlay and Marwick |
| 1966 | Glycymeris (Glycymerita) Fleming p. 18 |
| 1980 | Glycymerita Vokes p. 20 |
| 1983 | Glycymeris (Glycymerita) Moore p. A53 |
| 1984 | Glycymeris (Glycymerita) Squires p. 42 |
| 1986 | Glycymeris (Glycymerita) Covacevich and Frassinetti p. 39 |
| 1987 | Glycymeris (Glycymerita) Squires p. 56 |
| 1988 | Glycymeris (Glycymerita) Squires p. 17 |
| 1992 | Glycymeris (Glycymerita) Squires and Demetrion p. 36 |
| 1992 | Glycymeris (Glycymerita) del Rio p. 18 |
| 1998 | Glycymerita Stilwell p. 35 |
| 2002 | Glycymerita Sepkoski |
| 2010 | Glycymerita Squires pp. 901 - 902 |
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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.
G. †Glycymerita Finlay and Marwick 1937
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†Glycymeris (Glycymerita) anae Smith 1945
†Glycymeris (Glycymerita) apletos Dailey and Popenoe 1966
†Glycymeris (Glycymerita) ibariformis Frassinetti and Covacevich 1983
†Glycymeris (Glycymerita) magna del Rio 1992
†Glycymeris (Glycymerita) major meganosensis Clark and Woodford 1927
†Glycymeris (Glycymerita) reefensis Vokes 1939
†Glycymeris (Glycymerita) sagittata Gabb 1864
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†Glycymeris sagittata dickersoni Weaver and Van Winkle Palmer 1922
†Glycymeris (Glycymerita) tecolotensis Hanna 1927
†Glycymeris sagittata kelsoensis Weaver and Van Winkle Palmer 1922
Subg. †Glycymerita (Glycymerita) Finlay and Marwick 1937
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†Glycymerita (Glycymerita) cardioides d'Orbigny 1847
†Glycymerita aleuta Squires 2010
†Glycymerita banosensis Anderson 1958
†Glycymerita concava Marshall 1917
†Glycymerita gigantica Kanjilal and Srinivasan 2002
†Glycymerita robusta Marwick 1923
†Glycymerita sagittata Gabb 1864
†Glycymerita veatchii Gabb 1864
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Invalid names: Glycymeris apletos Dailey and Popenoe 1966 [synonym], Glycymeris pentzana Anderson 1958 [synonym], Glycymeris shastensis Anderson 1958 [synonym], Glycymeris suciensis McLellan 1927 [synonym], Glycymeris veatchii anae Smith 1945 [invalid subgroup], Glycymeris veatchii reddingensis Smith 1945 [invalid subgroup]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. L. Squires 2010 | Subquadrate to quadrate, rarely trigonal. Umbones wide and prominent, moderately inflated to well inflated, both sides strongly depressed and shouldered; valves can be produced posteriorly. Shell surface with many prominently raised radial ribs with well defined narrow interspaces. Radial striae rarely evident. Cardinal area symmetrical or nearly so. Cardinal-base area bearing numer- ous strong ligamental ridges/grooves. Hinge plate arched to strongly arched. Taxodont teeth stout. |
Measurements
| part | N | mean | |||||
|---|---|---|---|---|---|---|---|
| valve height | 1 | 22.8 |
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| Source: f = family, c = class | |||||
| References: Aberhan et al. 2004, Mikkelsen and Bieler 2008 | |||||
Age range: base of the Aptian to the top of the Early/Lower Pliocene or 121.40000 to 3.60000 Ma
Collections (359 total)
Oldest occurrences | |||
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Aptian | Japan (Iwate) | Glycymeris haipensis (40315 40553) | |
| Albian | United Kingdom (England) | Glycymeris sublaevis (51675) | |
| Late/Upper Albian | United Kingdom (England) | G. sublaevis, G. umbonata (6280) | |
| Cenomanian | Japan (Kagoshima) | Glycymeris solida (40515) | |
| Cenomanian | Japan | Glyceris hokkaidoensis (141571) | |
| Cenomanian | Japan (Kumamoto) | Glycymeris matsumotoi (40602) Glycymeris solida (39638) | |
| Early/Lower Cenomanian | India | G. cardioides (228245) | |
| Middle Cenomanian | India | G. cardioides (228244) | |
| Cenomanian - Turonian | Russian Federation (Sakhalin) | Glycymeris sachalinensis (39569) | |
| Late/Upper Cretaceous | USA (California) | Glycimeris veatchii (193032 193034) Glycymeris veatchii (206274 206277 206278 237456 237459 237460) | |
Youngest occurrences |
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| Time interval | Ma | Country or state | PBDB collection number |
| Burdigalian | Peru | Glycymeris ibariformis (76635) | |
| Burdigalian | Chile | Glycymeris ibariformis (78521) | |
| Burdigalian | Argentina (Río Negro) | G. camaronesia, G. cuevensis (179579) G. cuevensis, G. camaronesia (179578) | |
| Altonian | New Zealand | Glycymeris robusta (67897) | |
| Middle Miocene | Peru | Glycymeris ibariformis (76636) | |
| Middle Miocene - Late/Upper Miocene | New Zealand | Glycymeris sp. (45033) | |
| Tortonian | Argentina | G. magna (41481) | |
| Late/Upper Miocene | India (Andaman and Nicobar) | Glycymeris gigantica (46558) | |
| Late/Upper Miocene | Argentina | Glycymeris magna (71544 71548 71551 71552 71553 71554 71567 71572) | |
| Early/Lower Pliocene | New Zealand (Auckland) | Glycymeris manaiaensis (45256) Glycymeris sp. (45258 45259) | |