BETA TEST - Fossil data and pages are very much experimental and under development. Please report any problems
Rzehakinidae
| Description | The Rzehakinidae is a family of Lower Cretaceous to recent formaminifera that resemble the calcareous imperforate Miliolidae but which are constructed of finely agglutinated material that veneers an organic base. Tests are with two, or less commonly three, chambers per whorl, which are commonly added in various planes. In form they are generally ovoid. From Wikipedia article at https://en.wikipedia.org/wiki/Rzehakinidae, which is released under the Creative Commons Attribution-Share-Alike License 3.0. | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Source Data |
| ||||||||||||||||||||||||
| Rank | family | ||||||||||||||||||||||||
| Taxonomy (GBIF) | Life : Chromista : Foraminifera : Globothalamea : Lituolida : Rzehakinidae | ||||||||||||||||||||||||
| Taxonomy (PBDB) | Life : Foraminifera : Rzehakinidae | ||||||||||||||||||||||||
| Taxonomic Status (GBIF) | accepted | ||||||||||||||||||||||||
| Classification (PBDB,GBIF) |
| ||||||||||||||||||||||||
| Scientific Name | Rzehakinidae | ||||||||||||||||||||||||
| Opinions (PBDB) |
| ||||||||||||||||||||||||
| Status (PBDB) | extant | ||||||||||||||||||||||||
| Taxon Size (PBDB) | 11 | ||||||||||||||||||||||||
| Extant Size (PBDB) | 5 (45%) | ||||||||||||||||||||||||
| First Recorded Appearance | 105 - 100 Ma Cretaceous | ||||||||||||||||||||||||
| Motility | stationary (based on Foraminifera) | ||||||||||||||||||||||||
| Diet | detritivore (based on Textulariina) | ||||||||||||||||||||||||
| Taphonomy | agglutinated (based on Textulariina) | ||||||||||||||||||||||||
| Primary Reference (PBDB) | E. Morlotti. 1988. Late Cretaceous flysch-type agglutinated foraminifera from the Northern Italian Apennines. Abh Geol B-A 41:265-285 | ||||||||||||||||||||||||
| Wikipedia | https://en.wikipedia.org/wiki/Rzehakinidae |
Fossil Distribution
Subtaxa
| Name | Status | Common Name(s) | Fossil Occurrences | Oldest | Youngest |
|---|---|---|---|---|---|
| Ammoflintina genus | accepted (GBIF) listed (PBDB) | 0 Ma Extant | |||
| Birsteiniolla genus | accepted (GBIF) listed (PBDB) | 0 Ma Extant | |||
| Psamminopelta ✝ genus | accepted (GBIF) listed (PBDB) | 13 | 105 Ma Early/Lower Cretaceous | 105 Ma Early/Lower Cretaceous | |
| Caudammina ✝ genus | accepted (GBIF) listed (PBDB) | ||||
| Rzehakina ✝ genus | accepted (GBIF) listed (PBDB) | 2 | 99.6 Ma Late/Upper Cretaceous | 83.5 Ma Late/Upper Cretaceous | |
| Silicomassilina ✝ genus | accepted (GBIF) listed (PBDB) | ||||
| Silicosigmoilina ✝ genus | accepted (GBIF) listed (PBDB) | 3 | 99.6 Ma Late/Upper Cretaceous | 61.6 Ma Paleocene | |
| Spirolocammina genus | accepted (GBIF) listed (PBDB) | 0 Ma Extant | |||
| Spirosigmoilinella ✝ genus | accepted (GBIF) listed (PBDB) | 3 | 33.9 Ma Oligocene | 28.4 Ma Oligocene | |
| Trilocularena genus | accepted (GBIF) listed (PBDB) | 0 Ma Extant |
Synonymy List
| Year | Name and Author |
|---|---|
| 1923 | Rzehakinidae Cushman |
| 1988 | Rzehakinidae Loeblich and Tappan |
| 1988 | Rzehakinidae Morlotti p. 278 |
References
Data courtesy of: PBDB: The Paleobiology Database, Creative Commons CC-BY licenced. , GBIF: the Global Biodiversity Information Facility, various licences, iDigBio, various licences, and EOL: The Encyclopedia of Life (Open Data Public Domain). Because fossils are made of minerals too!
