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Sphaeramminidae
Taxonomy
Sphaeramminidae was named by Cushman (1933). It is extant. It was considered unknown by Loeblich and Tappan (1987).
It was assigned to Lituoloidea by Loeblich and Tappan (1987); and to Lituolacea by Loeblich and Tappan (1988).
It was assigned to Lituoloidea by Loeblich and Tappan (1987); and to Lituolacea by Loeblich and Tappan (1988).
Subtaxa
Synonymy list
| Year | Name and author |
|---|---|
| 1933 | Sphaeramminidae Cushman |
| 1987 | Sphaeramminidae Loeblich and Tappan p. 68 |
| 1988 | Sphaeramminidae 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.
Fm. Sphaeramminidae Cushman 1933
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G. Ammosphaerulina Cushman 1912
G. Canepaia Boltovskoy 1961
G. Sphaerammina Cushman 1910
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| A. R. Loeblich and H. Tappan 1987 | Test planispiral and involute, later chambers almost completely enclosing earlier ones; wall finely agglutinated; aperture areal, rounded to slitlike, with a simple projecting tooth. Holocene. |
Measurements
No measurements are available
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| Source: superf = superfamily, subo = suborder, o = order | |||||
| References: Kiessling 2004, Loeblich and Tappan 1988, Loeblich and Tappan 1984 | |||||
Age range
Maximum range based only on fossils: Turonian or 93.90000 to 89.80000 Ma
Minimum age of oldest fossil (stem group age): 89.8 Ma
Minimum age of oldest fossil (stem group age): 89.8 Ma
Collections (4 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Turonian | Indian Ocean | Praesphaerammina gerochi (257955 257967 257970) | |
| Turonian - Coniacian | Indian Ocean | Praesphaerammina gerochi (257953) |