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Nystiellidae
Taxonomy
Nystiellidae was named by Clench and Turner (1952).
It was assigned to Janthinoidea by Kaim (2004); and to Epitonioidea by Bouchet et al. (2005).
It was assigned to Janthinoidea by Kaim (2004); and to Epitonioidea by Bouchet et al. (2005).
Subtaxa
Synonymy list
| Year | Name and author |
|---|---|
| 1952 | Nystiellidae Clench and Turner |
| 2004 | Nystiellidae Kaim p. 62 |
| 2005 | Nystiellidae Bouchet et al. p. 253 |
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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.
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: superf = superfamily, c = class | |||||
| References: Kiessling 2004, Hendy et al. 2009 | |||||
Age range
Maximum range based only on fossils: base of the Early/Lower Valanginian to the top of the Late/Upper Miocene or 137.05000 to 5.33300 Ma
Minimum age of oldest fossil (stem group age): 132.6 Ma
Minimum age of oldest fossil (stem group age): 132.6 Ma
Collections (9 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Valanginian | Poland (Lodzkie) | Opaliopsis boucheti (64858) | |
| Hauterivian | Spain (Castellon) | Proscala ferreresi (3726) | |
| Aptian - Albian | Germany | Proscala bornhardti (67184) | |
| Early/Lower Albian | Madagascar (Mahajanga) | Opaliopsis franciscae (60071) Opaliopsis franciscae, Opaliopsis dupinianum (60072) | |
| Early/Lower Campanian - Middle Campanian | USA (Mississippi) | Opaliopsis angustocota (7456) | |
| Selandian - Thanetian | New Zealand | Proscala n. sp. (64699) Proscala parvicostata (64700) | |
| Late/Upper Miocene | Argentina (Chubut) | Opaliopsis linaresi (42149) |