| Xiuqiella | |
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| X. rectangula | |
| Scientific classification | |
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| Genus: | Xiuqiella |
| Species: | X. rectangula |
| Binomial name | |
| Xiuqiella rectangula | |
Xiuqiella rectangula is a corynexochid trilobite that lived in what is now Chongqing, [1] China during the Nangaoian stage of the Cambrian Period, [1] near the end of Cambrian Stage 3, which lasted from approximately 516 to 513 million years ago. [2]
Yunnanocephalus is a genus of ptychopariid trilobite. It lived during the late Atdabanian and Botomian stages, in what are currently Antarctica, Australia and China. It was a "moderately common" member of the Chengjiang Fauna. Yunnanocephalus is the only genus currently assigned to the Yunnanocephalidae family.
Meteoraspis is an extinct genus of ptychopariid trilobites of the family Tricrepicephalidae. The various species lived from 501 to 490 million years ago during the Dresbachian faunal stage of the late Cambrian Period. Fossils of Meteoraspis are characteristic of Late Cambrian strata in North America, though they are found in Late Cambrian strata elsewhere in the world, such as M. nevensis from Victoria Land, Antarctica.
Kuamaia is an extinct genus of artiopodan in the phylum Arthropoda. Fossils of the type species K. lata were discovered in the Chengjiang biota. The other species in the genus,K. muricata has also been identified there, but neither species has been found elsewhere.
Kendallina is a genus of trilobite with an inverted egg-shaped outline, a wide headshield, small eyes, small deflected spines, 12 thorax segments and a small, short tailshield. It lived during the Upper Cambrian in what are today Canada and the United States.
Genevievella is a genus of trilobites with a short inverted egg-shaped outline, a wide headshield, small eyes, and long genal spines. The backrim of the headshield is inflated and overhangs the first of the 9 thorax segments. The 8th thorax segment from the front bears a backward directed spine that reaches beyond the back end of the exoskeleton. It has an almost oval tailshield with 5 pairs of pleural furrows. It lived during the Upper Cambrian in what are today Canada and the United States.
The Franconia Formation is a geologic formation in the upper mid-western United States, with outcroppings found in Illinois, Indiana, Iowa, Michigan, Minnesota, Missouri, Ohio, and Wisconsin. It preserves fossils dating back to the Cambrian period. It was named the Franconia Formation due to the first published documentation of exposures in vicinity of Franconia, Minnesota in the 1897 Ph.D. dissertation by Charles P. Berkley at the University of Minnesota titled Geology of the St. Croix Dalles. The Franconian stratigraphic stage was named after this formation.
The Potosi Formation is a geologic formation in Missouri, Illinois and Indiana. It preserves fossils dating back to the Cambrian period.
The Weeks Formation is a geologic formation in Utah. It preserves fossils dating back to the Cambrian period and more specifically the Guzhangian stage. Its upper part has yielded a diverse fauna dominated by trilobites and brachiopods, but also comprising various soft-bodied organisms, such as Falcatamacaris. As such, it is regarded as a Konservat-Lagerstätte.
The Carrara Formation is a geologic formation in Nevada. It preserves fossils dating back to the Cambrian period.
Tricrepicephalus is an extinct genus of ptychopariid trilobites of the family Tricrepicephalidae with species of average size. Its species lived from 501 to 490 million years ago during the Dresbachian faunal stage of the late Cambrian Period. Fossils of Tricrepicephalus are widespread in Late Cambrian deposits in North America, but is also known from one location in South-America. Tricrepicephalus has an inverted egg-shaped exoskeleton, with three characteristic pits in the fold that parallels the margin of the headshield just in front of the central raised area. The articulating middle part of the body has 12 segments and the tailshield carries two long, tubular, curved pygidial spines that are reminiscent of earwig's pincers that rise backwards from the plain of the body at approximately 30°.
Furnishina is an extinct genus of conodonts in the family Furnishinidae from the Cambrian.
Proconodontus is an extinct genus of conodonts in the family Proconodontidae. The specimens are found in Cambrian formations.
Gapparodus is an extinct genus of conodonts in the family Furnishinidae. Gapparodus gapparites is a species of the Early Cambrian of Shuijingtuo Formation in China.
Kallidontus is an extinct genus of conodonts.
Cordylodus is an extinct genus of conodonts in the family of Cordylodontidae.
Eoconodontus is an extinct genus of conodonts of the Late Cambrian. It is a two-elements genus from the Proconodontus lineage.
Protohertzina is a genus of conodonts or, possibly, Chaetognaths, found at the beginning of the Cambrian explosion.
Redlichia chinensis is a species of trilobite that existed from 526 million years ago to 513 million years ago in the early Cambrian period. The species ecology is a nektobenthic deposit feeder. R. chinensis was discovered by Chang in 1966 in the Balang formation, china. There are 19 fossils of R. chinensis discovered so far. Species of Redlichia chinensis has wide cephalon with a border and the glaella tapers forwards. The hypostoma has been pushed through from the underside and the genal spines are not at the occipital edge. The thorax narrows to a small pygidium and the pleurae terminate in short spines. R. chinensis is 7.5 centimeters long.
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