Incertae sedis
Incertae sedis (Latin for "of uncertain placement") is a term used for a taxonomic group where its broader relationships are unknown or undefined. Alternatively, such groups are frequently referred t...
Incertae sedis - Wikipedia
Scientists Discover How Some Of The World’s First Animals Reproduced
Rangeomorphs, which lived about 565 million years ago, were pretty strange. They're often considered to be some of the first animals to evolve on Earth, but they share little in common with modern cri...
Nectocarididae
Nectocaris pteryx is a species of possible cephalopod affinity, known from the "early Cambrian" (Series 2) Emu Bay Shale and Chengjiang biota, and the "middle Cambrian" (Series 3, Stage 5) Burgess Sha...
Nectocarididae - Wikipedia
Salterella
Salterella is an enigmatic Cambrian–Ordovician genus with a calcareous shell that appears to be septate, but is rather filled with stratified laminar deposits. Its shell contains grains of sedi...
Salterella - Wikipedia
Scientists Discover How Some Of The World’s First Animals Reproduced
Rangeomorphs, which lived about 565 million years ago, were pretty strange. They're often considered to be some of the first animals to evolve on Earth, but they share little in common with modern cri...
Pinguosteus
Pinguosteus thulborni is a species of arthrodire placoderm from the Gogo Reef Formation, of Late Devonian Australia. The proportions of its armor, coupled with the relative lack of ornamentation on t...
Pinguosteus - Wikipedia
Mobergella
Mobergella is a millimetric Lower Cambrian shelly fossil of unknown affinity, usually preserved in phosphate and particularly well known from Swedish strata, where it is diagnostic of lowermost Cambri...
Cynomorium coccineum
Cynomorium coccineum is a parasitic perennial flowering plant in the Cynomoriaceae, a family consisting of only one (or perhaps two) species in the genus Cynomorium. Its wider relationships are uncert...
Cynomorium coccineum - Wikipedia
Opabinia
Opabinia regalis is an extinct stem-arthropod found in the Middle Cambrian Burgess Shale Lagerstätte of British Columbia, Canada. Fewer than twenty good specimens have been described; 3 specimens of ...
Opabinia - Wikipedia
Funisia
Funisia is a genus containing the single species F. dorothea, a fossil upright worm-like animal from the Ediacaran biota. Funisia stood about 0.3 metres tall. Because individuals grew in dense c...
Funisia - Wikipedia
Resilitheca
Resilitheca is a genus of land plant known from kidney-shaped sporangia. It is known from charcoalified Early Devonian deposits, its type locality being the Brown Clee Hill lagerstätten.
Microschedia
Microschedia is an enigmatic fossil bilaterian known from four specimens from Lower Cambrian deposits in Morocco.
The fossils are approximately discoid, and covered with a net-like pattern. Fine ...
Microschedia - Wikipedia
Lossinia
Lossinia lissetskii is a fossil marine organism from Precambrian strata of the White Sea area, in Russia. L. lissetskii is a member of the extinct phylum Proarticulata.
The generic name refers to...
Lossinia - Wikipedia
Kockurus
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...
Aluvarus
Aluvarus praeimperialis is an extinct bony fish, known from two headless fossil specimens found in the Elam Formation, a Lower Oligocene stratum from the Rupelian epoch, of what is now Iran. A. praei...
Aluvarus - Wikipedia
Thectardis
Thectardis avalonensis is a triangular-shaped member of the Ediacara biota, dating from 575 to 565 million years ago. The organism took the form of an elongated cone with a central depressio...
Thectardis - Wikipedia
Hederopsis
Hederopsis is an extinct genus of the enigmatic hederellids.
Janospira
Janospira is a microfossil known from Ordovician deposits, whose affinity is uncertain. It resembles a spiral shell mounted on a cylinder.There are compelling reasons to discount a foramaniferan or mo...
Antimanoa
Antimanoa is a genus of fungi in the Ascomycota phylum. The relationship of this taxon to other taxa within the class is unknown (incertae sedis), and it has not yet been placed with certainty into an...
Ovatoscutum
Ovatoscutum is one of many enigmatic organisms known from the Ediacaran deposits of the Flinders Ranges, Australia, and the White Sea area in Russia, dating around 555 Ma. This genus contains one spec...
Ovatoscutum - Wikipedia
Palaeopascichnus
Palaeopascichnus is a genus of Ediacaran organism comprising a series of lobes; it is plausibly a protozoan, but probably unrelated to the classical 'Ediacaran biota'.
List of Ediacaran genera
Black bass
Micropterus is a genus of freshwater fish in the sunfish family (family Centrarchidae) of order Perciformes. The species of this genus are known as the black basses.The black basses are sometimes err...
Black bass - Wikipedia
Tumulduria
Tumulduria is a Cambrian small shelly fossil. It is phosphatic, and approximately bilaterally symmetrical. It was first described by Missazhevskii (1969: English translation in Rozanov et al. 1981, ...
Yunnanozoon
Yunnanozoon lividum ("Livid Animal of Yunnan") is an extinct deuterostome suspected of being either a hemichordate or chordate, from the Lower Cambrian, Chengjiang biota of Yunnan province, China.Yunn...
Yunnanozoon - Wikipedia
Punctaconchus
Punctaconchus is a genus of microconchid tubeworms. Their tubes have large pores (punctae) penetrating the tube wall. Tubes lumen is covered byripplemark−like transverse ridges. Punctaconchus occurs i...
Punctaconchus - Wikipedia
Vernanimalcula
Vernanimalcula guizhouena is an acritarch dating from 600 to 580 million years ago; it was between 0.1 and 0.2 mm across (roughly the width of one or two human hairs). Vernanimalcula me...
Vernanimalcula - Wikipedia
Mongolitubulus
Mongolitubulus is a form genus encapsulating a range of ornamented conical small shelly fossils of the Cambrian period. It is potentially synonymous with Rushtonites, Tubuterium and certain species of...
Andrewsarchus
Andrewsarchus mongoliensis (/ˌændruːˈsɑrkəs/ AN-drew-SAR-kəs; Andrews + Greek: ἀρχός, "ruler"), is an extinct mammal that lived during the Eocene epoch, roughly between 45 and 36 million years ago...
Andrewsarchus - Wikipedia