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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) and 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) and Squires and Demetrion (1992); to Arcoida by Sepkoski (2002); and to Glycymeridinae by Vokes (1980), Stilwell (1998) and 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) and 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) and Squires and Demetrion (1992); to Arcoida by Sepkoski (2002); and to Glycymeridinae by Vokes (1980), Stilwell (1998) and 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 suciensis, Glycymeris apletos)
Species lacking formal opinion data
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) reefensis Vokes 1939
†Glycymeris (Glycymerita) sagittata Gabb 1864
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†Glycymeris sagittata kelsoensis Weaver and Palmer 1922
†Glycymeris (Glycymerita) tecolotensis Hanna 1927
†Glycymeris sagittata dickersoni Weaver and 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 major Stanton 1896
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†Glycymeris (Glycymerita) major meganosensis Clark and Woodford 1927
Invalid names: Glycymeris maccrayi Waring 1917 [synonym]
†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 suciensis McLellan 1927 [synonym]
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. |