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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Crithionina
Taxonomy
Crithionina was named by Goës (1894). It is extant. Its type is Crithionina mamilla.
It was assigned to Astrorhizidae by Cushman (1927); and to Crithionininae by Loeblich and Tappan (1988).
It was assigned to Astrorhizidae by Cushman (1927); and to Crithionininae by Loeblich and Tappan (1988).
Species
C. mamilla (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 1894 | Crithionina Goës p. 38 |
| 1927 | Crithionina Cushman p. 7 |
| 1988 | Crithionina Loeblich and Tappan |
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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: subo = suborder, o = order | |||||
| References: Loeblich and Tappan 1984, Kiessling 2004 | |||||
Age range
Maximum range based only on fossils: base of the Berriasian to the top of the Late/Upper Valanginian or 143.10000 to 132.60000 Ma
Minimum age of oldest fossil (stem group age): 137.05 Ma
Minimum age of oldest fossil (stem group age): 137.05 Ma
Collections (4 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Berriasian | Russian Federation | C. sp. (65700) | |
| Early/Lower Valanginian | Russian Federation | C. sp. (65744 65748) | |
| Late/Upper Valanginian | Russian Federation | C. sp. (65751) |