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Kallokibotion
Taxonomy
Kallokibotion was named by Nopcsa (1923). It is the type genus of Kallokibotioninae.
It was assigned to Testudines by Nopcsa (1923); to Kallokibotioninae by Nopcsa (1928); to Kallokibotiidae by Carroll (1988); to Kallokibotionidae by Gaffney and Meylan (1992); to Meiolaniformes by Sterli and de la Fuente (2013), de la Fuente et al. (2014) and Sterli et al. (2015); to Perichelydia by Joyce (2017); and to Testudinata by Joyce (2007), Danilov and Parham (2008), Anquetin (2012), Pérez-García and Murelaga (2013) and Pérez-García and Codrea (2017).
It was assigned to Testudines by Nopcsa (1923); to Kallokibotioninae by Nopcsa (1928); to Kallokibotiidae by Carroll (1988); to Kallokibotionidae by Gaffney and Meylan (1992); to Meiolaniformes by Sterli and de la Fuente (2013), de la Fuente et al. (2014) and Sterli et al. (2015); to Perichelydia by Joyce (2017); and to Testudinata by Joyce (2007), Danilov and Parham (2008), Anquetin (2012), Pérez-García and Murelaga (2013) and Pérez-García and Codrea (2017).
Synonymy list
| Year | Name and author |
|---|---|
| 1923 | Kallokibotion Nopcsa p. 104 |
| 1928 | Kallokibotion Nopcsa p. 166 |
| 1988 | Kallokibotium Carroll |
| 1992 | Kallokibotion Gaffney and Meylan p. 3 figs. 1-32 |
| 2007 | Kallokibotion Joyce |
| 2008 | Kallokibotion Danilov and Parham |
| 2012 | Kallokibotion Anquetin p. 34 fig. 10 |
| 2013 | Kallokibotion Pérez-García and Murelaga |
| 2013 | Kallokibotion Sterli and de la Fuente |
| 2014 | Kallokibotion de la Fuente et al. |
| 2015 | Kallokibotion Sterli et al. |
| 2017 | Kallokibotion Joyce |
| 2017 | Kallokibotion Pérez-García and Codrea |
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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.
G. †Kallokibotion Nopcsa 1923
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†Kallokibotion bajazidi Nopcsa 1923
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Invalid names: Kallokibotion magnificum Nopcsa 1923 [synonym], Thalassodromeus sebesensis Grellet-Tinner and Codrea 2015 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| E. S. Gaffney and P. A. Meylan 1992 | A selmacryptodiran turtle with no temporal emargination of the daiocryptodiran type, a long parietal-squamosal contact probably present, parietal relatively elongate; prefrontal forming large lappet on skull roof as in Kayentachelys, not meeting on midline; nasal forming internarial process; triturating surfaces very narrow as in Glyptops; lower jaws very deep as in Kayentachelys; foramen caroticum basisphenoidale formed entirely by basisphenoid; canalis caroticus lateralis opens on ventral surface at a foramen formed by basisphenoid and pterygoids; pterygoids with very narrow medial extension to midline, unlike any other turtle; palatine with parasagittal grooves on ventral surface; incisura columellae auris enclosing eustachian tube and stapes in bone. Cervical vertebrae amphicoelous with high postzygapophyses posteriorly, narrow centra, and a low ventral keel; caudal vertebrae amphicoelous with tightly fitting zygapophyses concave anteriorly unlike those in other turtles; first thoracic vertebra facing directly anteriorly; nuchal bone small and rectangular; eight neurals probably present; two suprapygals, anterior one larger; plastron with short, rounded anterior lobe; full set of plastral scales; paired intergular (= gular of Hutchison and Bramble, 1981) scales unequal in size and extend onto entoplastron, gular (= extragular of Hutchison and Bramble, 1981) scales limited to epiplastron; large, triangular mesoplastra separate hyoplastron and hypoplastron for most of their width but- mesoplastra do not meet in the midline (as a possible variant, they may meet in midline). | |
| A. Pérez-García and V. Codrea 2017 | A Testudinata belonging to the stem group of Testudines, with the following autapomorphies: nuchal plate composed of two elements, the most anterior being smaller and rectangular, and the other hexagonal and wider than long. |
Measurements
No measurements are available
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| Source: c = class, subp = subphylum, uc = unranked clade | |||||
| References: Carroll 1988, Hendy et al. 2009 | |||||
Age range: base of the Santonian to the top of the Early/Lower Maastrichtian or 86.30000 to 66.00000 Ma
Collections (27 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Santonian | Hungary (Veszprém) | Kallokibotioninae indet. (48722) | |
| Early/Lower Campanian | Austria (Niederosterreich) | Emys neumayri (48720) | |
| Maastrichtian | Romania (Hunedoara) | K. sp. (221782) | |
| Early/Lower Maastrichtian | Romania (Alba) | K. bajazidi (80858 93729) K. sp. (80859 85496 97813) Thalassodromeus sebesensis (115074) | |
| Early/Lower Maastrichtian | Romania | K. sp. (115004) | |
| Early/Lower Maastrichtian | Romania (Hunedoara) | K. bajazidi (13334 67817 193942) K. sp. (67818 97948 153889 163322 163323 163328 219171 221768) | |
| Late/Upper Maastrichtian | Romania (Hunedoara) | K. bajazidi (27894 67808 219177) K. sp. (26369) | |
| Late/Upper Maastrichtian | Romania (Alba) | K. sp. (115001 156125) |