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Tika giacchinoi
Taxonomy
Tika giacchinoi was named by Apesteguía et al. (2021). Its type specimen is MPCA-PV-340, a partial skeleton, and it is a 3D body fossil. Its type locality is Hoyada de los esfenodontes 2, La Buitrera, which is in a Cenomanian dune sandstone in the Candeleros Formation of Argentina. It is the type species of Tika.
Synonymy list
| Year | Name and author |
|---|---|
| 2021 | Tika giacchinoi Apesteguía et al. p. 420 fig. 2–8 |
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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.
†Tika giacchinoi Apesteguía et al. 2021
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| S. Apesteguía et al. 2021 | Medium sized sphenodontine (skull length about 39–42mm) differing from all other sphenodontians in having the following unique combination of features (potential autapomorphies indicated with *): dentary with very low coronoid process*, short posterior process*, and a blunt, protruding symphyseal spur*; large, labiolingually compressed caniniform with a sharp posterior edge* and a pointed tip; additional dentition with distinct wear marks indicative of proal movements of the jaw against the skull; pyramidal, square-based additional teeth of dentary having weak anterolingual, and anterolabial flanges, and posterior flanges on at least one tooth; conical additional teeth on maxilla and palatine having posterolingual and posterolabial flanges, respectively; moderately deep maxilla below the orbit *; double maxilla-palatine articulation; vaulted palate; quadrate having tall vertical strut and well-projected articular process* having a deeply bilobate cotyle; dorsal vertebrae having rudimentary zygosphene-zygantrum, and distinct subcentral foramina in adults. |
Measurements
No measurements are available
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| Source: subc = subclass, c = class, subp = subphylum | |||||
| References: Carroll 1988, Hendy et al. 2009 | |||||
Age range: Early/Lower Cenomanian or 99.60000 to 93.50000 Ma
Collections (3 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Cenomanian | Argentina (Río Negro) | Tika giacchinoi (206599 type locality: 225913 225914) |