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A rangeomorph holdfast trace fossil from the Ediacara formation, Rawnsley quartzite of the Flinders Range, South Australia. This specimen is Medusina mawsoni, so called because it was until recently thought to be a jellyfish, but is now believed to be the attachment point of a fractal rangeomorph as Charniodiscus is the point of anchorage for Charnia sp. This one may have been the holdfast point for some species of Rangea. The diameter of the outer circle is 1.5 cm and the fossil is estimated to be 555 million years old.
Ellipsocephalus hoffi is a common trilobite mainly from central Europe. The slab shows several Ellipsocephalus remnants. Taxonomy according to Fossilworks.org. The systematic position of the family Ellipsocephalidae remains a subject of discussion. Odontogenetic stages of Ellipsocephalus hoffi according to Laibl et al. 2015, p. 5: Identified by oilshale using Laibl et al., 2015. References: SCHLOTHEIM, E.F. (1823): Nachträge zur Petrefactenkunde. Zw. Abteilung, Becker, Gotha, 114 pp. FATKA, O. & SZABAD, M. (2014): Biostratigraphy of Camb
Hello All, I wanted to share my new trilobite, it is a common yet in my opinion a nicely preserved one. It is Ellipsocephalus hoffi , from the Middle Cambrian found in Litavka River valley, Czech Republic. It is much different than the other Moroccan and Russian trilobites I own, this one I read is blind and lived on the sea floor where it was relatively dark, very cool! Here is the specimen: If you have any E. hoffi to share, then please do so.
juan posted a gallery image in Members Gallery