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Apalonina (softshell turtle)
Taxonomy
Apalonina was named by Meylan (1987). It is extant. It was considered monophyletic by Meylan (1987).
It was assigned to Trionychini by Meylan (1987) and Vitek and Danilov (2015).
It was assigned to Trionychini by Meylan (1987) and Vitek and Danilov (2015).
Subtaxa
Synonymy list
| Year | Name and author |
|---|---|
| 1987 | Apalonina Meylan p. 91 |
| 2015 | Apalonina Vitek and Danilov |
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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.
Subtr. Apalonina Meylan 1987 [softshell turtle]
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| P. A. Meylan 1987 | Members of the Tribe Trionychini in which the eighth pair of pleurals is reduced or absent, there are seven or more ossifications in the second branchial horn, the intermaxillary foramen is about 60 percent
of primary palate in length, there is no distinct metischial process (except in spiniferus and muticus), and the vomer divides the maxillae and reaches the intermaxillary foramen. |
Measurements
No measurements are available
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| Source: f = family, subp = subphylum | |||||
| References: Carroll 1988, Ernst and Barbour 1989 | |||||
Age range: Early/Lower Oligocene or 33.90000 to 28.40000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Oligocene | Kazakhstan | Ulutrionyx ninae (179690) |