| Pliciloricus enigmaticus | |
|---|---|
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| Pliciloricus enigmaticus(Higgins & Kristensen, 1986) [1] | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Loricifera |
| Order: | Nanaloricida |
| Family: | Pliciloricidae |
| Genus: | Pliciloricus |
| Species: | P. enigmaticus |
| Binomial name | |
| Pliciloricus enigmaticus | |
 | |
| Distribution of Pliciloricus enigmaticus | |
Pliciloricus enigmaticus is a marine Loriciferan species of genus Pliciloricus first described by Higgins & Kristensen 1986. [1]
 | This section may be too technical for most readers to understand.(December 2021) |
Pliciloricus enigmaticus is a marine species in which adults measure between 160–268 µm of length (excluding any cone mouth). [1]
The body is dual compound, located in the second row spinoscalids in position medioventral and lies fused in the middle of its length basal. It usually is very modified, strongly sclerotised, and rigid. The 15 spinoscalids have claws in the third row. Spinoscalids with 4–7 teeth that alternate with spinoscalids that are not modified.
The Lorica features 7 ridges cuticular transverse and longitudinal ridges doubles, 2 plates lateroventral of the caudal region. The anus is terminal. [1]
The species name Pliciloricus enigmaticus has so far only been used for animals found in the northwestern Atlantic Ocean: Two finds off the eastern shore of North America (see map, right). [2]
Loricifera is a phylum of very small to microscopic marine cycloneuralian sediment-dwelling animals that had been determined to be 37 described species, in 9 genera, but in 2021 has increased to 43 species. Aside from these described species, there are approximately 100 more that have been collected and not yet described. Their sizes range from 100 μm to ca. 1 mm.
Kinorhyncha is a phylum of small marine invertebrates that are widespread in mud or sand at all depths as part of the meiobenthos. They are also called mud dragons. Modern species are 1 mm (0.039 in) or less, but Cambrian forms could reach 4 cm (1.6 in).
Limnognathia maerski is a microscopic freshwater animal, discovered living in warm springs on Disko Island, Greenland, in 1994. Since then, it was also found in Crozet Islands of Antarctica.).
Reinhardt Møbjerg Kristensen is a Danish invertebrate biologist, noted for the discovery of three new phyla of microscopic animals: the Loricifera in 1983, the Cycliophora in 1995, and the Micrognathozoa in 2000. He is also considered one of the world's leading experts on tardigrades. His recent field of work revolves mostly around arctic biology.
Palaephatoidea is a superfamily of insects in the order Lepidoptera with a single family, Palaephatidae with seven known genera. These "Gondwanaland moths" exhibit a disjunct distribution occurring mainly in South America, with four species in eastern Australia and Tasmania and one in South Africa. The larvae spin together leaves of Proteaceae (Ptyssoptera) or Verbenaceae (Azaleodes) . Palaephatoidea, a typical monotrysian group, is one two main candidates as the sister group of most of the Lepidoptera, the Ditrysia.
Scalidophora is a group of marine pseudocoelomate protostomes that was proposed on morphological grounds to unite three phyla: the Kinorhyncha, the Priapulida and the Loricifera. The three phyla have four characters in common — chitinous cuticle that is moulted, rings of scalids on the introvert, flosculi, and two rings of introvert retracts. However, the monophyly of the Scalidophora was not supported by two molecular studies, where the position of the Loricifera was uncertain or as sister to the Panarthropoda. Both studies supported a reduced Scalidophora comprising the Kinorhyncha and Priapulida as sister phyla. Their closest relatives are the Panarthropoda, Nematoda and Nematomorpha; thus, they are placed in the group Ecdysozoa.
Pharyngeal teeth are teeth in the pharyngeal arch of the throat of cyprinids, suckers, and a number of other fish species otherwise lacking teeth.
In zoology, deep-sea gigantism or abyssal gigantism is the tendency for species of invertebrates and other deep-sea dwelling animals to be larger than their shallower-water relatives across a large taxonomic range. Proposed explanations for this type of gigantism include colder temperature, food scarcity, reduced predation pressure and increased dissolved oxygen concentrations in the deep sea. The inaccessibility of abyssal habitats has hindered the study of this topic.
Fasciolaria tulipa, common name the true tulip, is a species of large sea snail, a marine gastropod mollusk in the family Fasciolariidae.
The enigma garden eel is an eel in the family Congridae. It was described by Peter Henry John Castle and John Ernest Randall in 1999. It is a marine, tropical eel which is known from the western Pacific Ocean, including Indonesia and Papua New Guinea. It dwells at a depth range of 3 to 25 m, and inhabits regions with dark, silty sand and seagrass of the genus Holiphila. Males can reach a maximum total length of 43.7 cm, while females can reach 41.6 cm.
Pliciloricus is a genus of marine organisms Pliciloricidae family, the phylum Loricifera described by Higgins & Kristensen, 1986.
Pliciloricidae are a family of marine organisms in the phylum Loricifera. It contains 23 species in 4 genera.
Rugiloricus is a genus of marine organisms of the phylum Loricifera and the family Pliciloricidae, described by Higgins & Kristensen in 1986.
Rugiloricus cauliculus is a species of marine animal of the phylum Loricifera and the family Pliciloricidae. The species was described by Higgins & Kristensen in 1986, however other sources such as OBIS indicate that discovery of the species occurred on 19 November 1983.
Titaniloricus is a genus of small marine animal in the phylum Loricifera. It contains a single species, Titaniloricus inexpectatovus, described by Gunnar Gad in 2005. It has been collected from the abyssal plain in Angolan waters of the Atlantic Ocean.
Pliciloricus dubius is a marine Loriciferan species of genus Pliciloricus described by Higgins & Kristensen 1986.
Robert Price Higgins is an American systematic invertebrate zoologist and ecologist, specializing in the unusual taxa of kinorhynchs and tardigrades.
Ficopomatus enigmaticus, commonly known as the Australian tubeworm, is a species of serpulid tubeworms. Their true native range is unknown, but they probably originated in the Southern Hemisphere, perhaps from the Indian Ocean and the coastal waters of Australia. Today they have a cosmopolitan distribution, having been introduced to shallow waters worldwide. The Australian tubeworm is an invasive species that dominates and alters habitats, reduces water quality, depletes resources, and causes biofouling.
Urnaloricus is a genus of loricifera; it is distinct enough to belong to its own family, Urnaloricidae. Loricifera are phylum that are animals that live in marine area only, and very small in size. The Urnaloricus was found Southwest in the Faroe Islands, North Atlantic. It was the thirty-eighth loriciferan species found. One part of the life cycle is the Higgins larva and it is introverted with eight two-segmented clavoscalids. </ref> Heiner, & Kristensen, R. M. (2009). Urnaloricus gadi nov. gen. et nov. sp., an aberrant Loficifera with a viviparous pedogenetic life cycle. Journal of Morphology (1931), 270(2), 129-153. </ref> Kristensen, Gooday, A.J., & Goineau, A. (2019). Loricifera inhabiting spherical aggluniated structures in the abyssal eastern equatorial Pacific nodule fields. Marine Biodiversity, 49(5), 2455-2466. </ref> Neves, Kristensen, R. M., Rohal, M., Thistle, D., & Serensen, M. V. (2019). FIrst report of Loricifera from the North East Pacific Region, with the description of two new species. Marine Biodiversity, 49(3), 1151-1168.
Jeanne Renaud-Mornant, Born Jeanne Renaud, Jeanne Renaud-Debyser before her second marriage was a French biologist specialising in meiofauna.
Media related to Pliciloricus enigmaticus at Wikimedia Commons
Data related to Pliciloricus enigmaticus at Wikispecies