New ancyloceratidae (Ammonoidea) from the Aptian of the Ulyanovsk region, Middle Volga
Crossref DOI link: https://doi.org/10.1134/S003103011404011X
Published Online: 2014-08-06
Published Print: 2014-07
Update policy: https://doi.org/10.1007/springer_crossmark_policy
Stenshin, I. M.
Shumilkin, I. A.
Uspensky, G. N.
Text and Data Mining valid from 2014-07-01