ant ▁material ▁can ▁distinguish ▁Volk heimer ia ▁especially ▁in ▁the ▁pel vic ▁and ▁verte br al ▁regions , ▁such ▁as ▁the ▁very ▁low ▁flat ▁neural ▁sp ines . ▁ ▁Disc overy ▁and ▁naming ▁ ▁Volk heimer ia ▁was ▁first ▁described ▁in ▁ 1 9 7 9 ▁by ▁Jose ▁Bon ap arte . ▁In ▁the ▁paper , ▁Bon ap arte ▁also ▁named ▁its ▁type ▁species , ▁V . ▁ch ub ut ensis . ▁It ▁was ▁also ▁shown ▁to ▁be ▁a ▁relative ▁of ▁L app ar ent osa urus ▁by ▁Bon ap arte ▁due ▁to ▁similar ities ▁in ▁the ▁neural ▁l am inae . ▁Origin ally ▁identified ▁as ▁a ▁possible ▁cet ios aur ▁along ▁with ▁Pat ag osa urus ▁and ▁then ▁identified ▁as ▁a ▁bra ch ios aur ▁for ▁a ▁time , ▁Volk heimer ia ▁is ▁now ▁considered ▁a ▁e us au rop od ▁along ▁with ▁Pat ag osa urus ▁and ▁L app ar ent osa urus , ▁with ▁Volk heimer ia ▁and ▁L app ar ent osa urus ▁relatively ▁primitive ▁e us au rop ods ▁compared ▁to ▁the ▁more ▁derived ▁Pat ag osa urus . ▁The ▁only ▁known ▁spec imen ▁of ▁Volk heimer ia ▁is ▁from ▁the ▁Cal lov ian ▁to ▁Oxford ian ▁aged ▁Pat agon ian ▁depos its ▁that ▁also ▁preserved ▁Pat ag osa urus ▁and ▁P iat nitz k ys aur us , ▁both ▁named ▁in ▁the ▁same ▁publication ▁as ▁Volk heimer ia . ▁ ▁References ▁▁ ▁Category : B rach ios a urs ▁Category : D in osa ur ▁gener a