Basic info | Taxonomic history | Classification | Included Taxa |
Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Sandownidae
Taxonomy
Sandownidae was named by Tong and Meylan (2013). Its type is Sandownia.
It was assigned to Eucryptodira by Tong and Meylan (2013).
It was assigned to Eucryptodira by Tong and Meylan (2013).
Subtaxa
Synonymy list
Year | Name and author |
---|---|
2013 | Sandownidae Tong and Meylan p. 188 |
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.
Fm. †Sandownidae Tong and Meylan 2013
show all | hide all
Diagnosis
Reference | Diagnosis | |
---|---|---|
H. Tong and P. Meylan 2013 | Centrocryptodiran turtles (otic trochlea present and internal carotid artery located deep within pterygoid) with the jugal making a significant contribution to the triturating surface; pterygoids partly or completely cover basisphenoid; premaxillae partly or completely fused and slightly protuberant anteriorly; prefrontal L-shaped, with a posteriolateral process along the ventral margin of the orbit; external process of the pterygoid absent and occipital condyle with anterior location in between the articular surfaces of the quadrate. Long symphysis of dentary; broad triangular lower triturating surface that slopes ventrally from the coronoid process and lacks labial and lingual ridges (known in Sandownia harrisi and the taxon described below). |
Measurements
No measurements are available
|
|
||||
|
|
||||
|
|
||||
|
|
||||
Source: subo = suborder, c = class, subp = subphylum | |||||
References: Uetz 2005, Hendy et al. 2009, Carroll 1988 |
Age range: base of the Late/Upper Barremian to the top of the Danian or 130.00000 to 61.60000 Ma
Collections (8 total)
Time interval | Ma | Country or state | Original ID and collection number |
---|---|---|---|
Late/Upper Barremian - Early/Lower Aptian | Colombia (Boyaca) | Leyvachelys cipadi (176544) | |
Early/Lower Aptian | United Kingdom (England) | Sandownia harrisi (77953) | |
Early/Lower Albian | USA (Texas) | Eucryptodira indet. (27774) Leyvachelys cipadi (31172 180948 180949) | |
Coniacian | Angola (Bengo) | Angolachelys mbaxi (60168) | |
Danian | Morocco | Brachyopsemys tingitana (83311) |