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Subepona
Taxonomy
Subepona was named by Dolin and Lozouet (2004).
It was assigned to Cypraeinae by Dolin and Lozouet (2004); to Cyproglobininae by Dolin and Aguerre (2018); and to Erosariinae by Groves and Squires (2023).
It was assigned to Cypraeinae by Dolin and Lozouet (2004); to Cyproglobininae by Dolin and Aguerre (2018); and to Erosariinae by Groves and Squires (2023).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 2004 | Subepona Dolin and Lozouet pp. 59 - 60 |
| 2018 | Subepona Dolin and Aguerre pp. 88, 91 |
| 2023 | Subepona Groves and Squires p. 10 |
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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. †Subepona Dolin and Lozouet 2004
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Subepona antiqua Lamarck 1810
†Subepona goedertorum Groves and Squires 1995
†Subepona herrerensis Dolin and Lozouet 2004
†Subepona leahae Groves and Squires 2023
†Subepona promeces Pacaud and Ledon 2012
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| L. Dolin and P. Lozouet 2004 | la coquille est ovo!de, a bards fortemenr margines. La spire est fortement saillante. Le canal siphonal droit, canalicule, forme un pontet etroir, bien degage, tres legeremenr rehausse par rapport a la sole ventrale regulierement convexe. Le pli terminal, simple et allonge, esr droit et horizontal ; il est prolonge par une lame interne maigre, verticale. La fossula, trigone, Iegerement concave, est lisse comme I' aire columellaire, faiblement mais regulierement convexe . .Langulation est abrupte, les denticules parietaux courant sur la sole ventrale au niveau du quart posterieur de la levre interne, qui forme une arere adapicale hypertrophiee, en oreillette, caracteristique. Le canal exhalant est long, canalicule, et forme un pontet saillant, acicule a ses extremites, nettement dejete adapicalement et ouvert (retrousse) dorsalement. | |
| L. T. Groves and R. L. Squires 2023 | Shell ovoid, smooth, and somewhat lowly to considerably inflated. Aperture mostly straight with stout teeth on both lips. Fossula trigonal, slightly convave, smooth like the columellar area, weakly but regularly convex. Ends of shell protrude. Extremities on both sides of exhalant canal rostrate (can be beaklike), with labrum (outer lip) extremity large and more curved relative to shorter and straighter columellar extremity. Slight depression associated with submerged spire. Terminal fold long, thin, extended, and bladelike. Siphonal canal long, wide, deep and clearly distinct from curve of shell margin. Marginal border on shell sides weak (mainly near ends of shell) (Dolin and Lozouet 2004: p. 60). |
Measurements
No measurements are available
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| Source: f = family, c = class | |||||
| References: Hendy et al. 2009, Kiessling 2004 | |||||
Age range
Maximum range based only on fossils: base of the Ypresian to the top of the Chattian or 56.00000 to 23.04000 Ma
Minimum age of oldest fossil (stem group age): 48.07 Ma
Minimum age of oldest fossil (stem group age): 48.07 Ma
Collections (11 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Ypresian | USA (Washington) | Proadusta goedertorum (176361 176362) | |
| Ypresian | USA (California) | S. goedertorum (178718) | |
| Lutetian | USA (California) | Cypraea castacensis (8012) Cypraea sp. (5542) | |
| Bartonian | Italy (Veneto) | S. antiqua (176769) | |
| Bartonian | France | S. promeces (177068 177610) | |
| Chattian | France (Landes) | S. herrerensis (152689) | |
| Chattian | France (Aquitaine) | S. herrerensis (88795) | |
| Chattian | France | S. herrerensis (177708) |