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Owadowia borsukbialynickae
Taxonomy
Owadowia borsukbialynickae was named by Szczygielski et al. (2017). Its type specimen is ZPAL V/O‐B/1959, a partial skeleton (fragment of the lower jaw, right coracoid, ilium + femur), and it is a 3D body fossil. Its type locality is Owadów‐Brzezinki quarry (Unit I), which is in a Tithonian open shallow subtidal limestone in the Kcynia Formation of Poland.
Synonymy list
| Year | Name and author |
|---|---|
| 2017 | Owadowia borsukbialynickae Anquetin et al. |
| 2017 | Owadowia borsukbialynickae Szczygielski et al. |
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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.
†Owadowia borsukbialynickae Szczygielski et al. 2017
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| T. Szczygielski et al. 2017 | Relatively large Jurassic turtle (estimated carapace length around 50 cm) with narrow and V‐shaped lower jaw, relatively short and wide but pronounced snout, massive, spoon‐like symphysis, no symphyseal hook, well‐developed triturating surface in the symphyseal area, moderately developed triturating surface with parallel lingual and labial ridges along the mandibular rami, the labial ridge much higher and sharper than the lingual ridge, the lingual ridge only present laterally and gradually disappearing towards the midline of the symphyseal area, splenial large. The triangular, symmetrical coracoid plate without anterior or posterior expansions, the coracoid neck without coracoid foramen. The slender and proximally and distally slightly curved femur with deep, U‐shaped intertrochanteric fossa, small fibular condyle and prominent, well‐developed tibial condyle. The ilium with expanded ventral end, constricted neck and well‐developed, thin dorsal fan with posterior and no anterior expansion, no signs of sutural attachment to the carapace. | |
| J. Anquetin et al. 2017 | The available material of Owadowia borsukbialyn- ickae lacks diagnostic characters of Thalassochelydia, but several characteristics of the lower jaw combined with temporal and spatial considerations suggest a close relationship with thalas- sochelydians (see below). Owadowia borsukbialynickae differs from all other thalassochelydians by a narrow and V-shaped lower jaw, a spoon-like symphysis without symphyseal hook, a triturating surface well developed in the symphyseal area but only moderately developed along the mandibular rami, a high and sharp labial ridge, a reduced lingual ridge present only laterally, and a large splenial. |
Measurements
No measurements are available
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| Source: c = class, subp = subphylum, uc = unranked clade | |||||
| References: Hendy et al. 2009, Carroll 1988 | |||||
Age range: Early/Lower Tithonian or 150.80000 to 145.00000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Tithonian | Poland | Owadowia borsukbialynickae (type locality: 216435) |