Original name  
  Check ECoF  
  Current accepted name  
Yes
  Status  
Accepted name
  Status details  
senior synonym, original combination
  Status ref.  
  Etymology of generic noun  
  from ETYFish
Etymology not explained, likely derived from mordax (L.), biting, referring to specific name of M. mordax. (See ETYFish)
  Etymology of specific epithet  
  from ETYFish
Latin for premature, referring to its “precocious nature of sexual development,” wherein newly metamorphosed ammocoetes become sexually mature without first reaching their adult parasitic phase. (See ETYFish)
  Link to references  
References using the name as accepted
  Link to other databases  
ITIS TSN : 159748 | Catalogue of Life | ZooBank | WoRMS

Note: ETYFish and FishBase started a collaboration to complete the etymology for all valid names of fishes. For the current update, the following groups were completed: hagfishes (Myxini), lampreys (Petromyzonti), chimaeras (Holocephali), and sharks (Squalomorphi). It is a work in progress, so the two websites may not be synchronized.

Scharpf, C. The ETYFish Project, Fish Name Etymology Database. https://www.etyfish.org
Please, report here on etymology issues.