| Bredocaris Temporal range: | |
|---|---|
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| Composite image of three fossil specimens of Bredocaris | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Clade: | Mandibulata |
| Clade: | Pancrustacea |
| Genus: | † Bredocaris Müller, 1983 |
| Species: | †B. admirabilis |
| Binomial name | |
| †Bredocaris admirabilis Müller, 1983 | |
Bredocaris admirabilis is a pancrustacean from the Cambrian Orsten.
Bredocaris is roughly 800 micrometers long, with the carapace roughly half as long, rounded and fused with the four anteriormost limb-bearing segments, and has a possible median eye consisting of two blisters connected by a bridge with a median pore. The front two appendage pairs, which may represent antennae, are both different to the posterior ten pairs of appendages which seem to form a filter apparatus. [1] The labrum is large and noticeably projects from the body anterior of the molar process. The abdominal segment has a pair of furcae, alongside a tiny spine dorsoterminally above the anus. Six distinct larval stages of Bredocaris are known from more than 30 specimens, which alongside other features such as the complete filter apparatus and shape of the fourth appendage pair seems to indicate that the final stage was the adult form of this genus. [1]
Bredocaris is named for the farm of St. Bredegården located north of the type locality, and for the Greek word χαρίς, meaning "crab". The species name admirabilis from the Latin word meaning "admirable" derives from the extremely delicate preservation of the specimen. [1]
All specimens of Bredocaris so far have been found in Västergötland, Sweden near a road between Stenstorp and Dala. [1]
Anomalocaris is an extinct genus of radiodont, an order of early-diverging stem-group arthropods.
Waptia is an extinct genus of arthropod from the Middle Cambrian of North America. It grew to a length of 6.65 cm (3 in), and had a large bivalved carapace and a segmented body terminating into a pair of tail flaps. It was an active swimmer and likely a predator of soft-bodied prey. It is also one of the oldest animals with direct evidence of brood care. Waptia fieldensis is the only species classified under the genus Waptia, and is known from the Burgess Shale Lagerstätte of British Columbia, Canada. Specimens of Waptia are also known from the Spence Shale of Utah, United States.
Alalcomenaeus is one of the most widespread and longest-surviving arthropod genera of the Early and Middle Cambrian. Known from over 300 specimens in the Burgess Shale and the Chengjiang biota. It is a member of the family Leanchoiliidae in the group Megacheira.
Schinderhannes bartelsi is a species of hurdiid radiodont (anomalocaridid), known from one specimen from the Lower Devonian Hunsrück Slates. Its discovery was astonishing because the latest definitive radiodonts were known only from the Early Ordovician, at least 66 million years earlier than this taxon.
Isoxys is a genus of extinct bivalved Cambrian arthropod; the various species of which are thought to have been freely swimming predators. It had a pair of large spherical eyes, and two large frontal appendages used to grasp prey.
Radiodonta is an extinct order of stem-group arthropods that was successful worldwide during the Cambrian period. Radiodonts are distinguished by their distinctive frontal appendages, which are morphologically diverse and were used for a variety of functions. Radiodonts were among the earliest large predators, but they also included sediment sifters and filter feeders. Some of the most famous species of radiodonts are the Cambrian taxa Anomalocaris canadensis, Hurdia victoria, Peytoia nathorsti, Titanokorys gainesi, Cambroraster falcatus and Amplectobelua symbrachiata. The later surviving members include the subfamily Aegirocassisinae from the Early Ordovician of Morocco and the Early Devonian member Schinderhannes bartelsi from Germany.
Stanleycaris is an extinct genus of hurdiid radiodont from the Cambrian. The type species is Stanleycaris hirpex. Stanleycaris was described from the Stephen Formation near the Stanley Glacier and Burgess Shale locality of Canada, as well as Wheeler Formation of United States. A second species, S. qingjiangensis is known from the Qingjiang biota of China. The genus was characterized by the rake-like frontal appendages with robust inner spines.
Strabops is a genus of strabopid, an extinct group of arthropods. Strabops is known from a single specimen from the Late Cambrian of the Potosi Dolomite, Missouri, collected by a former professor, Arthur Thacher. It is classified in the family Strabopidae of the monotypic order Strabopida, a group closely related to the aglaspidids with uncertain affinities. The generic name is composed by the Ancient Greek words στραβός, meaning "squinting", and ὄψῐς, meaning "face".
Paleomerus is a genus of strabopid, a group of extinct arthropods. It has been found in deposits from the Cambrian period. It is classified in the family Strabopidae of the monotypic order Strabopida. It contains two species, P. hamiltoni from Sweden and P. makowskii from Poland. The generic name is composed by the Ancient Greek words παλαιός (palaiós), meaning "ancient", and μέρος (méros), meaning "part".
Squamacula is an extinct artiopodan arthropod from the Cambrian Series 2. The type species S. clypeata was described in 1997 from the Chengjiang biota of Yunnan, China. At the time of description there were only two known specimens of S. clypeata, but now there are at least six known specimens. In 2012 a second species S. buckorum was described from the Emu Bay Shale of Australia.
Oelandocaris is an extinct genus of stem-mandibulate, or possibly a megacheiran, within the family Oelandocarididae.
Martinssonia is an extinct genus of Cambrian arthropod from the Orsten Lagerstätte.
Musacaris is an extinct genus of Cambrian arthropod from the Orsten Lagerstätte, formerly synonymous with Martinssonia. It contains only a single species, Musacaris gerdgeyeri.
Wujicaris muelleri is an Early Cambrian crustacean, from the Maotianshan Shales of China.
Rehbachiella is a genus of Cambrian crustacean comprising the only species Rehbachiella kinnekullensis. It is a possible branchiopod from the Orsten of Sweden.
Dala peilertae is an extinct genus of pancrustacean from the Cambrian Orsten.
Walossekia quinquespinosa is a Cambrian species of arthropod from the Orsten of Sweden. It is the only species in the genus Walossekia.
Henningsmoenicaris scutula is a Cambrian genus of arthropod from the Orsten of Sweden. It was formerly named Henningsmoenia, however this name was preoccupied by an ostracod, therefore it was renamed. Its genus name translates to "Henningsmoen's shrimp" after G. Henningsmoen. The species name, scutula is in reference to the large, bowl-shaped carapace.
Aengapentastomum is a Cambrian genus of pentastomid from the Orsten of Sweden, containing one species, Aengapentastomum andresi.
Boeckelericambria is a Cambrian genus of pentastomid from the Orsten of Sweden, containing one species, Boeckelericambria pelturae.