Quadratapora
Quadratapora is a genus of lobopodian known only from its biomineralized dorsal plates, which somewhat resemble those of Microdictyon. Q. tenuiporatum is known from a single specimen that was initially described as dating to the Tommotian, representing the earliest record of lobopodians. However, the material is now thought to be Atdabainan in age, reflecting both a mistake in the initial description of the material and a revision of the stratigraphy of the Isit section on the Lena river, from where the single specimen heralds.
Q. zhenbaensis is Atdabanian in age.