Editing Remora (section)

== Evolution ==
[[File:Echeneis glaronensis.JPG|left|thumb|Fossil specimen of ''[[Opisthomyzon]]'']]
Remoras are thought to be most closely related to the [[cobia]] and the [[Coryphaena|dolphinfish]], two other elongate members of the suborder [[Carangoidei]]. Together, they are thought to comprise the superfamily [[Echeneoidea]]. In some treatments, the Echeneoidea is instead restricted to just the remoras and ''Opisthomyzon''.<ref name=":0">{{Cite journal |last1=Friedman |first1=Matt |last2=Johanson |first2=Zerina |last3=Harrington |first3=Richard C. |last4=Near |first4=Thomas J. |last5=Graham |first5=Mark R. |date=2013-09-07 |title=An early fossil remora (Echeneoidea) reveals the evolutionary assembly of the adhesion disc |journal=Proceedings of the Royal Society B: Biological Sciences |volume=280 |issue=1766 |pages=20131200 |doi=10.1098/rspb.2013.1200 |pmc=3730593 |pmid=23864599}}</ref>

The earliest remora-like fish in the fossil record is ''[[Opisthomyzon]]'' from the [[Early Oligocene]] of Switzerland. This taxon appears to be closely related to modern remoras and shares several of the iconic traits present in modern remoras, including an [[Sucker (zoology)|adhesive disk]] (although located posterior to the head rather than directly on it). However, due to its distinctive morphological features from modern remoras, it is placed in its own family, Opisthomyzonidae.<ref name=":0" />

Also known from the Early Oligocene is the earliest true remora in the fossil record, ''[[Echeneis carpathica]]'' from Poland. From later in the Oligocene, the extinct genus ''[[Oligoremora]]'' is known from the [[Chattian]] of Germany.<ref>{{Cite journal |last1=Micklich |first1=Norbert |last2=Gregorová |first2=Růžena |last3=Bannikov |first3=Alexandre F. |last4=Baciu |first4=Dorin-Sorin |last5=Grădianu |first5=Ionuţ |last6=Carnevale |first6=Giorgio |date=2016-09-01 |title=Oligoremora rhenana n. g. n. sp., a new echeneid fish (Percomorpha, Echeneoidei) from the Oligocene of the Grube Unterfeld ("Frauenweiler") clay pit |url=https://link.springer.com/article/10.1007/s12542-016-0303-y |journal=PalZ |language=en |volume=90 |issue=3 |pages=561–592 |doi=10.1007/s12542-016-0303-y |issn=1867-6812|url-access=subscription }}</ref>