| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Planoheterohelix
Taxonomy
Planoheterohelix was named by Georgescu and Huber (2009). It was considered unknown by Georgescu and Huber (2009).
It was assigned to Heterohelicidae by Georgescu and Huber (2009).
It was assigned to Heterohelicidae by Georgescu and Huber (2009).
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 2009 | Planoheterohelix Georgescu and Huber |
Is something missing? Join the Paleobiology Database and enter the data
|
|
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. †Planoheterohelix Georgescu and Huber 2009
show all | hide all
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| M. D. Georgescu and B. T. Huber 2009 | Test is biserial throughout. Proloculus is small and followed by larger second chamber. Chambers are subglobular to globular in early portion of test and often reniform in adult. Periphery is broadly rounded. Aperture is a low- to medium-high arch situated at base of last-formed chamber; it is bordered by two symmetrically developed flanges. Chamber surface is smooth or with fine longitudinal costae in earlier species and completely costate in evolved ones. Test wall is calcitic, hyaline, microperforate to finely perforate. Pores are situated in intercostal spaces or they might penetrate and interrupt costae. |
Measurements
No measurements are available
|
|
||||
|
|||||
|
|
||||
| Source: o = order | |||||
| Reference: Kiessling 2004 | |||||
Age range: base of the Albian to the top of the Early/Lower Pliocene or 113.20000 to 3.60000 Ma
Collections (56 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Cretaceous | South Pacific (Equatorial Pacific) | P. sp. (219906) | |
| Albian | Indian Ocean | P. globulosa, P. sp., P. postmoremani (247034) | |
| Cenomanian | Indian Ocean | P. sp. (249053) | |
| Late/Upper Cretaceous | Indian Ocean | P. moremani, P. globulosa, P. planata, P. papula (250404 250406 250407) P. papula (250405) | |
| Turonian | Indian Ocean | P. globulosa (247025 252876 252882) P. globulosa, P. planata (247023 252877 252884) P. globulosa, P. sp. (249043 250386) P. moremani (249048) P. moremani, P. globulosa, P. sp. (249041) P. moremani, P. postmoremani, P. globulosa, P. sp. (250384) P. planata (252878) P. postmoremani (247022) P. sp. (249044 249045 249046 249047 250385) | |
| Coniacian | Indian Ocean | P. globulosa (249028 249029 249030) P. globulosa, P. planata (252874 252875) P. moremani, P. planata, P. globulosa (249027) P. moremani, P. reussi (249033) P. moremani, P. sp. (254291) P. planata, P. papula (247017) P. postmoremani, P. globulosa (249034) P. postmoremani, P. papula (247019) | |
| Santonian | Indian Ocean | P. globulosa (252873) P. papula (249024 249025) P. papula, P. globulosa (249023) P. reussi, P. globulosa (249022) P. reussi, P. papula (249019) P. reussi, P. papula, P. globulosa (249020 249021 249026) | |
| Santonian - Campanian | Indian Ocean | P. globulosa (252872) | |
| Santonian - Campanian | Chile | P. globulosa (231971 231973) P. globulosa, P. reussi (231969) P. reussi (231974) | |
| Campanian | Indian Ocean | P. planata (257600) | |
| Middle Campanian | Israel (Southern District) | P. globulosa (220176) | |
| Campanian - Maastrichtian | Indian Ocean | P. globulosa, P. planata (254287) P. moremani, P. planata (254288) | |
| Paleocene | Indian Ocean | P. globulosa (254285) | |
| Early/Lower Pliocene | South Pacific | P. globulosa (245802) |