Amiskwia is a genus of large, soft-bodied animals known from fossils of the Middle Cambrian Lagerstätten both in the Burgess shale formation in British Columbia and the Maotianshan shales of Yunnan Province, China. It is interpreted as a member of the Gnathiferan total group.
Bomakellia kelleri is an Ediacaran fossil organism represented by only one specimen approximately 9 cm long from the Ust'-Pinega Formation of the Syuzma River and it has similarity to Mialsemia semichatovi from Yorga Formation of the Ediacaran (Vendian
List of thelodont genera
This list of thelodonts is an attempt to create a comprehensive listing of all genera from the fossil record that have ever been considered to be members of the class Thelodonti. This list excludes purely vernacular terms. It includes (almost) all
Kockurus is a problematic genus of Cambrian arthropod, known from the Czech Republic, which bears some resemblance to the eurypterids, aglaspidids and chelicerates. It is diagnostic of a small and low-diversity fauna endemic to the area, which dwelt in
Redoubtia polypodia is a fossil from the Burgess Shale that was originally described by Charles Walcott as a holothurian echinoderm. Its affinity is unclear, though; it has also been compared to lobopodians
Aysheaia is an extinct genus of soft-bodied lobopod, known from the middle Cambrian of North America, the average body length is of 1–6 cm
Gelenoptron tentaculatum is an extinct, cnidarian-like organism represented by a single specimen and counterslab from the Burgess Shale. The holotype of G. tentaculatum was originally identified as a second specimen of the Animalia incertae sedis
Echmatocrinus is a Cambrian animal which resembles a crinoid or an octocoral. Its exact taxonomy is still a subject of debate. It is known only from the Burgess shale. 5 specimens of Echmatocrinus are known from the Greater Phyllopod bed, where they
Kodymirus is a problematic genus of Early Cambrian arthropod, known from the Czech Republic, which bears some resemblance to the eurypterids, aglaspidids, megacheirans, radiodonts, and other chelicerates. It is part of a small and low-diversity fauna
Rotadiscus is a genus of discoidal animal known from the Cambrian Chengjiang biota and classified with the eldoniids
Chalceus guaporensis
Chalceus guaporensis is a species of freshwater fish in the family Chalceidae that inhabits northern South America. Alongside C. epakros and C. spilogyros, it was added to the genus Chalceus in the year 2004