| Boeckelericambria Temporal range: | |
|---|---|
 | |
| Fossil specimen | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Ichthyostraca |
| Subclass: | Pentastomida |
| Genus: | † Boeckelericambria Walossek and Müller, 1994 |
| Species: | †B. pelturae |
| Binomial name | |
| †Boeckelericambria pelturae Walossek and Müller, 1994 | |
Boeckelericambria is a Cambrian genus of pentastomid from the Orsten of Sweden, [1] containing one species, Boeckelericambria pelturae.
Boeckelericambria is roughly 470 micrometers long. It has a subcircular, slightly flattened head with a bulging mouth encircled by a folded wall. Near the mouth are two soft, fleshy appendages, which seem to not be related to the limbs. Two pairs of appendages extend from the head, with an opening of unknown origin between them. The "fingers" (terminal podomeres) of the first pair of limbs point backwards, meanwhile those of the second pair point inwards. The head blends smoothly into the body, with no apparent trunk segmentation. The trunk limbs are vestigial, being small and rod-shaped with a cluster of setae on the end. The tail is slightly offset, carrying a pair of nodes alongside a slit that may be an anus. This genus, alongside other Orsten pentastomids, is likely a larval form with the adults not being preserved. [1]
The name Boeckelericambria honours W. Böckeler, alongside referring to the Cambrian age of the fossil. The species name pelturae refers to Peltura , the index trilobite of Zone 5 (where the fossil was found) [1]
Yohoia is an extinct genus of megacheiran arthropod from the Cambrian period that has been found as fossils in the Burgess Shale formation of British Columbia, Canada. The type species, Yohoia tenuis, was described in 1912 by Walcott, who considered it an anostracan crustacean. 711 specimens of Yohoia are known from the Greater Phyllopod bed, where they comprise 1.35% of the community. In 2015, Conway Morris et al. reported another species, Y. utahana, from the Marjum Formation, Utah.
The Pentastomida are an enigmatic group of parasitic arthropods commonly known as tongue worms due to the resemblance of the species of the genus Linguatula to a vertebrate tongue; molecular studies point to them being highly-derived crustaceans.
Fuxianhuia is a genus of Lower Cambrian fossil arthropod known from the Chengjiang fauna in China. Its purportedly primitive features have led to it playing a pivotal role in discussions about the euarthropod stem group. Nevertheless, despite being known from many specimens, disputes about its morphology, in particular its head appendages, have made it one of the most controversial of the Chengjiang taxa, and it has been discussed extensively in the context of the arthropod head problem.
Habelia is a genus of extinct arthropod from the Middle Cambrian, thought to be one of the earliest known relatives of chelicerates. Its fossils have been found in the Burgess Shale in British Columbia, Canada. Fifty-four specimens of Habelia are known from the Greater Phyllopod bed, where they comprise 0.1% of the community.
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.
Cucumericrus ("cucumber-leg") is an extinct genus of stem-arthropod. The type and only species is Cucumericrus decoratus, with fossils discovered from the Maotianshan Shales of Yunnan, China.
Skara is a genus of oligostracan pancrustaceans known from the Upper Cambrian Orsten deposit of Sweden, similarly aged deposits in China, and possibly Poland. It is the only genus in the order Skaracarida and family Skaraidae, and contains three species, S. anulata, S. minuta and S. hunanensis.
Cambropachycope is a genus of small extinct Cambrian arthropods, known from the Orsten lagerstätten in southern Sweden. It appears to have several apomorphic features, notably including a single large compound eye.
Phosphatocopina is an extinct group of bivalved arthropods known from the Cambrian period. They are generally sub-milimetric to a few millimetres in size. They are typically only known from isolated carapaces, but some found in Orsten-type phosphatized preservation have their bodies preserved in high fidelity in three dimensions.
Goticaris is a genus of small extinct Cambrian arthropods consisting of the single species Goticaris longispinosa, known from the Orsten lagerstätten in southern Sweden. It appears to have several apomorphic features, notably including a large compound eye.
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.
Cambropycnogon is an extinct genus of pycnogonid arthropods. The genus contains a single species, Cambropycnogon klausmuelleri, represented by presumed larval remains from the Upper Cambrian Orsten, having been referred to before description as "Larva D".
Rehbachiella is a genus of Cambrian crustacean comprising the only species Rehbachiella kinnekullensis. It is a possible branchiopod from the Orsten of Sweden.
Henningsmoenicaris is an extinct genus of Cambrian arthropods 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 genus contains a single species, Henningsmoenicaris scutula, with the specific name, scutula referencing the large, bowl-shaped carapace.
Aengapentastomum is a Cambrian genus of pentastomid from the Orsten of Sweden, containing one species, Aengapentastomum andresi.
Haffnericambria is a Cambrian genus of pentastomid from the Orsten of Sweden, containing one species, H. trolmeniensis.
Heymonsicambria is a Cambrian genus of pentastomid from the Orsten of Sweden, containing five species, H. kinnekullensis, H. scandica, H. repetskii, H. taylori and H. gossmannae.
Dietericambria is an extinct genus of Cambrian pentastomids from the Henson Gletscher Formation of Greenland. It is the oldest known pentastomid, being at least 15 million years older than the forms recorded from the Orsten. The genus contains a single species, Dietericambria hensoniensis.
Paulinecaris is a genus of crustacean from the Orsten of Sweden. It contains one species, Paulinecaris siveterae.
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