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Orthogonikleithrus
Taxonomy
Orthogonikleithrus was named by Arratia (1987). Its type is Orthogonikleithrus leichi. It is the type genus of Orthogonikleithridae.
It was assigned to Orthogonikleithridae by Konwert (2016).
It was assigned to Orthogonikleithridae by Konwert (2016).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1987 | Orthogonikleithrus Arratia |
| 2016 | Orthogonikleithrus Konwert p. 2 |
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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. †Orthogonikleithrus Arratia 1987
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†Orthogonikleithrus francogalliensis Konwert 2016
†Orthogonikleithrus hoelli Arratia 1997
†Orthogonikleithrus leichi Arratia 1987
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| M. Konwert 2016 | Small slender teleost. Complete or almost complete interorbital septum present. Vomer and parasphenoid without dentition. Supraorbital sensory canal without or with few tubules. A triangular elongated premaxilla and a short maxilla. Hyomandibula vertical. Quadrate-mandibular joint below center of orbit or posterior. Guiar plate absent. Preopercular sensory canal with three to five short tubules in ventral arm. Interopercle as long as ventral limb of preopercle or slightly longer. Cleithrum with very long ventral arm forming an angle of about 90° or slightly more with dorsal one. Pelvic fin origin slightly posterior to dorsal fin origin. Neural spines of last caudal centra forming an angle of about 45° with dorsal margin of centra. Preural vertebrae with hemal arches laterally unfused to their centra. Neural spine of preural centrum 2 as long as neural spine of preural centrum 3. Five or six hypurals present. Three to five uroneurals present. Bases of uppermost principal caudal rays not crossing obliquely over upper hypurals. Principal caudal rays with narrow bases and slightly attached to hypurals and hemal spines. Elongated, narrow dorsal and ventral caudal scutes. One small, oval ‘urodermal.’ |
Measurements
No measurements are available
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| Source: c = class, subp = subphylum | |||||
| Reference: Carroll 1988 | |||||
Age range: base of the Late/Upper Kimmeridgian to the top of the Early/Lower Tithonian or 155.70000 to 145.00000 Ma
Collections (3 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Kimmeridgian | Germany (Eastern Barvaria) | O. sp. (187436) | |
| Late/Upper Kimmeridgian | France | O. sp., O. francogalliensis (24426) | |
| Early/Lower Tithonian | Germany (Bayern) | O. hoelli (118174) |