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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Lithacoceras (Progeronia)
Taxonomy
Progeronia was named as a genus. It is not extant.
It was reranked as Lithacoceras (Progeronia) by Geyer (1961).
It was assigned to Perisphinctinae by Arkell et al. (1957); to Lithacoceras by Geyer (1961); and to Ammonoidea by Sepkoski (2002).
It was reranked as Lithacoceras (Progeronia) by Geyer (1961).
It was assigned to Perisphinctinae by Arkell et al. (1957); to Lithacoceras by Geyer (1961); and to Ammonoidea by Sepkoski (2002).
Subtaxa
Species lacking formal opinion data
Lithacoceras abbachense, Lithacoceras aeneas, Lithacoceras albulum, Lithacoceras ardescicum, Lithacoceras evolutum, Lithacoceras eystettense, Lithacoceras faselterum, Lithacoceras fructicans, Lithacoceras geron, Lithacoceras grandiplex, Lithacoceras heidenheimensis, Lithacoceras jelskii, Lithacoceras kreutzi, Lithacoceras larcheri, Lithacoceras latumbilicata, Lithacoceras lucingae, Lithacoceras malonianum, Lithacoceras mindowe, Lithacoceras onukii, Lithacoceras priscum, Lithacoceras pubescens, Lithacoceras rhodanicum, Lithacoceras richei, Lithacoceras riedense, Lithacoceras steichenensis, Lithacoceras submazuricum, Lithacoceras subschilli, Lithacoceras subulmense, Lithacoceras supremum, Lithacoceras thyrrhenum, Lithacoceras torquatiforme, Lithacoceras torquatiforme, Lithacoceras tyrrhenum, Lithacoceras ulmense, Lithacoceras unicomptum, Progeronia breviceps, Progeronia breviceps, Progeronia ernesti, Progeronia metamorpha, Progeronia progeron, Progeronia simplex, Progeronia triplex, Progeronia unicompta
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1850 | Ammonites eupalus d'Orbigny p. 555 figs. Pl. 217, fig. 1, 2 |
| 1957 | Progeronia Arkell et al. p. L321 |
| 1961 | Lithacoceras (Progeronia) Geyer |
| 2002 | Progeronia Sepkoski |
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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.
Subg. †Lithacoceras (Progeronia)
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Invalid names: Ammonites eupalus d'Orbigny 1850 [nomen oblitum]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| References: Kiessling 2003, Kiessling 2004 | |||||
Age range: base of the Early/Lower Kimmeridgian to the top of the Late/Upper Kimmeridgian or 154.80000 to 149.20000 Ma
Collections (14 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Oxfordian - Early/Lower Kimmeridgian | Somalia | Lithacoceras sp. (100372) | |
| Early/Lower Kimmeridgian | Romania | Progeronia breviceps, Progeronia metamorpha (198350) Progeronia progeron, Progeronia triplex (198349) Progeronia simplex (198351) Progeronia unicompta, Progeronia metamorpha (198353) | |
| Early/Lower Kimmeridgian | Switzerland (Jura) | Progeronia sp. (185666) | |
| Kimmeridgian | Algeria | Progeronia breviceps (45062 45064 45066 45071 45073) | |
| Kimmeridgian | Hungary | Progeronia sp. (154739) | |
| Late/Upper Kimmeridgian | Romania | Progeronia ernesti (198370 198371) |