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Kallokibotion bajazidi

Reptilia

Taxonomy
Kallokibotion bajazidi was named by Nopcsa (1923). Its type specimen is BMNH R4916 (lectotype), a set of postcrania (ofmost ofcarapace, posterior lobe of plastron, pelvis, and a caudal vertebra), and it is a 3D body fossil.

Synonyms
  • Kallokibotion magnificum was named by Nopcsa (1923). Its type specimen is BMNH R4930, a set of postcrania (plastron, steinkern of nearly complete shell, and external mold of carapace with some fragments of posterior peripherals, thoracic vertebrae, and shell fragment), and it is a 3D body fossil.

    It was synonymized subjectively with Kallokibotion bajazidi by Gaffney and Meylan (1992), Joyce (2017).
  • Thalassodromeus sebesensis was named by Grellet-Tinner and Codrea (2015) [Originally identified as part of a cranial crest of a pterosaur, the specimen was subsequently reidentified as part of a turtle plastron]. Its type specimen is ODA 28, a shell, and it is a 3D body fossil. Its type locality is Oarda de Jos A (OdA), which is in a Maastrichtian pond claystone/limestone in the Şard Formation of Romania.

    It was considered a nomen dubium by Dyke et al. (2015); it was synonymized subjectively with Kallokibotion bajazidi by Joyce (2017).
Synonymy list
YearName and author
1923Kallokibotion magnificum Nopcsa
1923Kallokibotion bajazidi Nopcsa p. 104
1992Kallokibotion bajazidi Gaffney and Meylan p. 3 figs. 1-32
2008Kallokibotion bajazidi Danilov and Parham
2013Kallokibotion bajazidi Pérez-García and Murelaga
2015Thalassodromeus sebesensis Grellet-Tinner and Codrea
2017Kallokibotion bajazidi Joyce
2017Kallokibotion bajazidi Pérez-García and Codrea

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
—Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
RankNameAuthor
—Tetrapoda
—Reptiliomorpha
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
—Sauropsida
classReptilia
—Testudinata(Oppel 1811)
genusKallokibotion
speciesbajazidi

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.

†Kallokibotion bajazidi Nopcsa 1923
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Invalid names: Kallokibotion magnificum Nopcsa 1923 [synonym], Thalassodromeus sebesensis Grellet-Tinner and Codrea 2015 [synonym]
Diagnosis
ReferenceDiagnosis
E. S. Gaffney and P. A. Meylan 1992[as for genus]
A. Pérez-García and V. Codrea 2017It differs from the other stem Testudines by the following character combination: skull as wide as long; internarial process present, mainly formed by the premaxillae; interorbital space very wide, wider than the length of each orbit; orbits as high as long, laterally located; prefrontals in contact with the apertura narium externae; parietal– squamosal contact; absence of quadratojugal-squamosal contact; absence of supraoccipital exposure on the skull roof; processus trochlearis oticum present; in the ventral skull margin, larger exposure of the quadratojugal than that of the jugal; small cheek emargination, as high as long; very narrow triturating surfaces; presence of labial, lingual and accessory ridges on the maxillary; pterygoid-basioccipital contact present; foramen caroticum basisphenoidale entirely formed by the basisphenoid; canalis caroticus lateralis ventrally open at a foramen formed by the basisphenoid and pterygoids; well-developed cranial scutes, three pairs and a posterior odd scute being located on the sagittal plane; dentary reaching the articular, preventing the suran- gular-angular contact; high coronoid process; absence of retroarticular process; outer surface of the shell with an ornament pattern composed of tiny and low vermiculations and tubercles; absence of shell fontanelles; absence of a nuchal notch; eight neurals, the first one hexagonal with short latero-posterior margins, the second rectangular, and the others hexagonal with short latero-anterior margins or with subequal latero-anterior and latero-posterior margins; eight pairs of costals; 2 suprapygals; 11 pairs of peripherals; no cervical scute; sulcus between the third and fourth vertebrals on the fifth neural; no supramarginals; 12 pairs of marginals; marginals not reaching the costal series; osseous carapace-plastron connection; absence of cleithrum; axillary buttresses contacting the peripheral series and the first costal; inguinal buttresses contacting the eighth peripherals and the costal series; short and rounded anterior plastral lobe; a single pair of mesoplastra; posterior plastral lobe longer than the anterior, with substraight lateral margins; distinct anal notch; a pair of intergulars, overlapping the anterior region of the entoplastron; complete inframarginal series, composed by four scutes; amphicoelous cervical and caudal vertebrae; narrow cervical vertebrae; centrum of the seventh cervical longer than that of the eighth; high cervical postzygapo- physes; low cervical ventral keel; first thoracic vertebra facing anteriorly directed; caudal vertebrae with tightly fitting zygapophyses concave anteriorly; triradiate pectoral girdle; well-developed and rod-shaped scapular and acromial processes, with a reduced lamina between them.
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialuc
Locomotion: actively mobilec
Created: 2017-04-17 15:15:35
Modified: 2017-04-17 15:15:35
Source: c = class, subp = subphylum, uc = unranked clade
References: Carroll 1988, Kiessling 2004, Hendy et al. 2009

Age range: Late/Upper Maastrichtian or 72.20000 to 66.00000 Ma

Collections (11 total)


Time interval Ma Country or state Original ID and collection number
Early/Lower Maastrichtian72.2 - 66.0Romania (Hunedoara) Kallokibotion bajazidi (13334 67817 193942) Kallokibotion sp. (97948)
Early/Lower Maastrichtian72.2 - 66.0Romania (Alba) Kallokibotion bajazidi (93729) Kallokibotion sp. (97813) Thalassodromeus sebesensis (115074)
Late/Upper Maastrichtian72.2 - 66.0Romania (Hunedoara) Kallokibotion bajazidi (27894 67808 219177) Kallokibotion sp. (26369)