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Heterohelix planata
Taxonomy
Guembelina planata was named by Cushman (1938).
It was recombined as Heterohelix planata by Pessagno (1967), Bertels (1970), Keller et al. (2007).
It was recombined as Heterohelix planata by Pessagno (1967), Bertels (1970), Keller et al. (2007).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1938 | Guembelina planata Cushman |
| 1967 | Heterohelix planata Pessagno p. 261 |
| 1970 | Heterohelix planata Bertels pp. 31-32 |
| 2007 | Heterohelix planata Keller et al. |
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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.
†Heterohelix planata Cushman 1938
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: o = order | |||||
| Reference: Kiessling 2004 | |||||
Age range: base of the Maastrichtian to the top of the Danian or 72.20000 to 61.66000 Ma
Collections (82 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Maastrichtian | Argentina (Neuquén) | Heterohelix planata (232662) | |
| Maastrichtian | Tunisia | Heterohelix planata (57234 57235 57391 57392 57393 57394 57395 57396 57397 57398 57399 57400 57401 57402 57403 57404 57405 57406 57421 57422 57425 57591 57592 57593 57594 57595 57600 57605 57606 57664 57665 57666) | |
| Maastrichtian | Egypt | Heterohelix planata (57369 57370 57371 57372 57374 57375 57376 57379 57382 57383 57384 57385 57386 57387 57388 57389 57390) | |
| Danian | Tunisia | Heterohelix planata (57242 57243 57244 57245 57247 57250 57251 57575 57576 57577 57578 57579 57581 57582 57583) | |
| Danian | Egypt | Heterohelix planata (57295 57296 57297 57298 57300 57301 57302 57305 57308 57309 57310 57311 57312 57313 57314 57315 57316) |