A new dinoflagellate cyst from the Upper Bathonian (Middle Jurassic) strata of the Russian Platform

James B. Riding, Vera I. Ilyina
1998 Journal of Micropalaeontology  
<p><strong>Abstract.</strong> <i>Protobatioladinium? elongatum</i> sp. nov. is a distinctive, large, longitudinally elongate Upper Bathonian (Middle Jurassic) dinoflagellate cyst recorded from western Russia. This species is questionably attributed to <i>Protobatioladinium</i> because the archaeopyle type does not precisely conform to that of the genotype. This form is present, often abundantly, throughout the Upper Bathonian sediments of the central and northern Russian Platform and appears to
more » ... form and appears to be a reliable marker species.</p>
doi:10.1144/jm.17.1.86 fatcat:b4hypzgeubgrngqwrmelf4m4qe