Mar’in I. A. RussiaNizhny NovgorodNizhny Novgorod’s Lobachevsky State University, 23 Gagarina Av., Nizhny Novgorod 603950, Russiashining1234@yandex.ru Author's articles MYELOGRAMS OF MARSH (PELOPHYLAX RIDIBUNDUS) AND POOL FROGS (PELOPHYLAX LESSONAE) (AMPHIBIA: RANIDAE) OF CONVENTIONALLY “BACKGROUND” AND ANTHROPOGENOUSLY TRANSFORMED TERRITORIES IN THE NIZHNIY NOVGOROD REGION