| Haffnericambria Temporal range: | |
|---|---|
 | |
| A reconstruction of Haffnericambria | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Ichthyostraca |
| Subclass: | Pentastomida |
| Genus: | † Haffnericambria Walossek and Müller, 1994 |
| Species: | †H. trolmeniensis |
| Binomial name | |
| †Haffnericambria trolmeniensis Walossek and Müller, 1994 | |
Haffnericambria is a Cambrian genus of pentastomid from the Orsten of Sweden, containing one species, H. trolmeniensis. [1]
Haffnericambria is roughly 730 micrometers long. It somewhat resembles Boeckelericambria in appearance, however without the near-mouth appendages. It also has much smaller and more compact head limbs, alongside a more "hammer-headed" appearance. Oddly, the vestigial trunk limbs have not preserved, with only small sockets indicating their original location. While the mouth is present on a swelling at the front of the head, it is very small and likely nonfunctional. The head rapidly tapers behind the limbs, smoothly blending into the trunk. The trunk segments are slightly bulged in the middle, however the boundaries are rather indistinct. The rear is not preserved, however it was likely similar to that of Boeckelericambria's. This genus, alongside other Orsten pentastomids, is likely a larval form with the adults not being preserved. [1]
Haffnericambria is named in honour of K. von Haffner, alongside being in reference to the Cambrian age of the fossil. The species name trolmiensis refers to the type locality of Trolmen. [1]
The Orsten fauna are fossilized organisms preserved in the Orsten lagerstätte of Cambrian rocks, notably at Kinnekulle and on the island of Öland, all in Sweden.
Hadranax is a genus of large lobopodian known from the lower Cambrian Sirius Passet Lagerstätte. This genus is characterized from other lobopodians due to multiple groups of four nodes running along its trunk region, similar to Kerygmachela, and a pair of extremely large frontal appendages that were possibly as long as the animal's entire body. This lobopodian is one of the rarer members of the Sirius Passet fauna, with only around three fragmentary specimens being known.
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.
Pauloterminus is an extinct genus of bivalved arthropod known from Early Cambrian Sirius Passet locality of northern Greenland. It is tentatively classified under the family Waptiidae.
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.
Mieridduryn is a genus of extinct dinocaridid arthropod that lived during the Middle Ordovician of what is now the United Kingdom. This animal was described in 2022 based on a singular fossil found in Castle Bank, a Burgess shale type lagerstätte located in the country of Wales. This animal's taxonomic affinities are somewhat unclear, but there are some hypotheses. One is that this animal represents a new grade of stem-euarthropods that evolved features similar to the Cambrian aged opabiniids. Another is that if the features seen in Mieridduryn are convergent, and not homologous, to those seen in radiodonts, then this animal represents a late surviving opabiniid.
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.
Oelandocaris is an extinct genus of stem-mandibulate, or possibly a megacheiran, within the family Oelandocarididae.
Goticaris 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.
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.
Rehbachiella is a genus of Cambrian crustacean comprising the only species Rehbachiella kinnekullensis. It is a possible branchiopod from the Orsten of Sweden.
Bredocaris admirabilis is a 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.
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 hensoniensis is a Cambrian pentastomid 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.
Klausmuelleria salopensis is a Cambrian phosphatocopine from the Comley Limestone of the UK.