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Oligoremora
Taxonomy
Oligoremora was named by Micklich et al. (2016). Its type is Oligoremora rhenana.
It was assigned to Echeneidae by Micklich et al. (2016).
It was assigned to Echeneidae by Micklich et al. (2016).
Species
O. rhenana (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 2016 | Oligoremora Micklich et al. p. 564 |
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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.
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| N. Micklich et al. 2016 | Differs from all other echeneids by the following combination of meristic data: 27 (12 ? 15) vertebrae; 8–9 branchiostegal rays; 26 disc lamellae, at least 30 dorsal fin rays, and at least 30–31 anal fin rays; caudal fin forked in larger-sized specimens, containing 17 (9 ? 8) principal rays plus *8, and *5–6 procurrent rays; 14–17 pectoral rays. Further diagnostic characters are: short lateral process of the prootic ending before the sphenotic; deep and slender hyo- mandibula without a posteriorly expanded spur on its dorsal posterior margin; dorsal hypohyal above and not posterior to the ventral one; posterior face of the ventral hypohyal con- cave with the ceratohyal insertion in the centre; disc poste- riorly extending over 3–4 anterior abdominal vertebrae; lack of expanded parapophyses posterior to the seventh abdominal vertebra; presence of anteriorly expanded neural arches forming a vertical wall with an irregular dorsal profile on the posterior abdominal and the anterior caudal vertebrae; distinct postero-lateral processes (presumably for ligament insertions) on the exoccipitals. Oligoremora furthermore differs from Echeneis and some species of Remora by having a broad medial anterior arm of the pelvic girdle with a crest associated with it; anterior parapophyses, expanded perpendicular to the vertebral column and also with small posterior extensions at their distal ends; presence of two series of intermuscular bones in the posterior part of the abdominal vertebral column as well as in the anteriormost caudal vertebrae; haemal spine of the third preural centrum autogenous; small and peg-like parhypurapophysis. Finally, Oligoremora also differs from all Remora by its dentary teeth being arranged in multiple rows, all approximately equal in size; and from R. remora by having three anal fin pterygiophores in the prehaemal space. |
Measurements
No measurements are available
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| Source: o = order, subp = subphylum | |||||
| References: Carroll 1988, Hendy et al. 2009 | |||||