1. 
   middorsal
   middorsal Word families with similar applications: 'back, backside' word units: lumbo- (loin, lower back); nuch- (nape of the neck); pygo- (rump, rear end, back side).
   Found op http://www.wordinfo.info/words/index/info/view_unit/669/2
   
   
2. 
   middorsal
   Pertaining to the middle of the back.
   Found op http://animal-world.com/encyclo/reptiles/information/reptile_glossary.php
   
   

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