| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Guanacastea
Taxonomy
Guanacastea was named by Pons et al. (2016). Its type is Biradiolites jamaicensis.
It was assigned to Radiolitidae by Pons et al. (2016).
It was assigned to Radiolitidae by Pons et al. (2016).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 2016 | Guanacastea Pons et al. pp. 228 - 230 |
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. †Guanacastea Pons et al. 2016
show all | hide all
†Guanacastea costaricaensis Pons et al. 2016
†Guanacastea jamaicensis Trechmann 1924
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J.M. Pons et al. 2016 | Radiolitid with conical, elongated RV presenting seven, or a few more, well-developed acute or swollen costae limited by deep furrows. Growth lamellae are deeply inclined inward. The outer shell layer has normal cellular structure and a variably developed compact marginal part. Radial structures are two down-and-outward folds of the growth lamellae with a subdivided distal end; the ventral one is shorter than the posterior. At the outer shell surface, they appear as two very close, short costae and a long costa with a concave distal end, respectively. The interband is limited to a deep furrow. The LV has a concave margin, fitting with the RV folds, and a more or less convex center. There is no ligamental ridge. |
Measurements
No measurements are available
|
|
||||
|
|
||||
|
|
||||
|
|||||
|
|
||||
|
|
||||
| Source: f = family, o = order, c = class | |||||
| References: Aberhan et al. 2004, Kiessling 2004, Kiessling 2003 | |||||
Age range: base of the Santonian to the top of the Maastrichtian or 85.70000 to 66.00000 Ma
Collections (36 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Santonian | Spain | Biradiolites jamaicensis (66983) | |
| Campanian | Costa Rica (Guanacaste) | G. costaricaensis (221367 221368) | |
| Late/Upper Campanian | Peru | Biradiolites jamaicensis (62033) | |
| Campanian - Maastrichtian | Guatemala | Biradiolites jamaicensis (66785) | |
| Late/Upper Maastrichtian | Jamaica (Clarendon) | Biradiolites jamaicensis (47119 162966 162970 162972 162974 162976 162979 162983 162991) | |
| Maastrichtian | Jamaica (Clarendon Parish) | Biradiolites jamaicensis (163010 163011 163013 163027) | |
| Maastrichtian | Jamaica (Clarendon) | Biradiolites jamaicensis (84791 84792 161326 161328 161329 161330 161335 161336 161339 161340 161341 161342 161343 161345 161349 161350 161363 161369) |