Editor’s note: We are delighted to present here Part 4 of “A Precambrian House of Cards,” a series by Dr. Bechly. Find the full series at this link. An extensive References section will follow at the end of the series. Wang et al. (2008) described unnamed discoidal fossils with tri-radial symmetry preserved as carbonaceous compression fossils from the Doushantuo Formation in South China, which they attributed to Trilobozoa similar to Anfesta and Albumares. Rugoconites was described by Glaessner & Wade (1966) as a conical disc-shaped fossil from the Ediacaran of Australia. Initially it was considered as a medusoid (Wade 1972), but later often considered as a putative Precambrian sponge (e.g., Seilacher 1999). After its poriferan relationship had been dismissed (see Read More ›
Read More
Evolution News