Protobatioladinium? elongatum sp. nov. is a distinctive, large, longitudinally elongate Upper Bathonian (Middle Jurassic) dinoflagellate cyst recorded from western Russia. This species is questionably attributed to Protobatioladinium 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 be a reliable marker species.
- Received May 1, 1997.
- Accepted May 1, 1997.
- © 1998 The Micropalaeontological Society