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Eosyngastrioceras
Taxonomy
Eosyngastrioceras was named by Titus (2000). Its type is Eosyngastrioceras quadratum.
It was assigned to Neoicoceratinae by Titus (2000); to Glaphyritidae by Korn (2006); and to Glaphyritinae by Furnish et al. (2009).
It was assigned to Neoicoceratinae by Titus (2000); to Glaphyritidae by Korn (2006); and to Glaphyritinae by Furnish et al. (2009).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 2000 | Eosyngastrioceras Titus p. 38 |
| 2006 | Eosyngastrioceras Korn |
| 2009 | Eosyngastrioceras Furnish et al. p. 80 |
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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. †Eosyngastrioceras Titus 2000
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†Eosyngastrioceras hesperium Miller and Furnish 1940
†Eosyngastrioceras inexpectans Titus 2000
†Eosyngastrioceras quadratum Titus 2000
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| A. L. Titus 2000 | Forms with pachyconic to cadiconic conchs and simple mildly sinuous growth lines, bearing only a single, prominent spiral cord on the umbilical shoulder. Ventral lobe of suture with moderate width (HL/WL = 1.3), a mod- erately deep medial saddle (approximately 75% the height of the ventral lobe in mature individuals), and moderately wide, sharply pointed, relatively narrow sub-parallel ventral prongs. Lobes only mildly constricted to non-constricted at the base. |
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| References: Kiessling 2003, Kiessling 2004 | |||||
Age range: Arnsbergian or 326.90000 to 323.60000 Ma
Collections (13 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Chesterian | USA (Nevada) | Cravenoceras hesperium (12781) | |
| Serpukhovian | USA (Montana) | Cravenoceras hesperium (5647) | |
| Arnsbergian | USA (California) | Cravenoceras hesperium (217081 217082 217083 217084 217087 217140 217141 217142 217143 217145) Cravenoceras hesperium, E. quadratum (217147) |