| Achelia | |
|---|---|
 | |
| Achelia transfugoides | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Subphylum: | Chelicerata |
| Class: | Pycnogonida |
| Order: | Pantopoda |
| Family: | Ammotheidae |
| Genus: | Achelia Hodge, 1864 |
Achelia is a genus of pycnogonids in the family Ammotheidae. [1] [2] [3]
Ammotheidae is a family of picnogonids.
The following are the species comprising the genus Achelia.
In biology, a species ( ) is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. While these definitions may seem adequate, when looked at more closely they represent problematic species concepts. For example, the boundaries between closely related species become unclear with hybridisation, in a species complex of hundreds of similar microspecies, and in a ring species. Also, among organisms that reproduce only asexually, the concept of a reproductive species breaks down, and each clone is potentially a microspecies.
This is a timeline of aviation history, and a list of more detailed aviation timelines. The text in the diagram are clickable links to articles.
Colossendeidae is a family of sea spider.
Hedgpethia is a genus of sea spider, in the family Colossendeidae. The genus was named after the marine biologist and sea spider specialist Joel Hedgpeth.
Nymphon is a genus of sea spiders in the family Nymphonidae.
Sandvikens AIK FK is a Swedish football club located in Sandviken.
Tanystylum is a genus of pycnogonids in the family Ammotheidae.
Colossendeis is a genus of sea spider belonging to the family Colossendeidae.
Callipallene is a genus of sea spiders in the family Callipallenidae. There are at least 30 described species in Callipallene.
 | Wikispecies has information related to Achelia |
