| Arachnomorpha Temporal range:
| |
|---|---|
| |
| Fossil of Bellacartwrightia calliteles, a trilobite | |
| |
| Lychas variatus, a scorpion chelicerate | |
Scientific classification
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Clade: |
Arachnomorpha Lameere, 1890 |
| Subgroups | |
| |
| Synonyms | |
| |
Arachnomorpha is a proposed subdivision or clade of Arthropoda, comprising the group formed by the trilobites and their close relatives ( Artiopoda), Megacheira (which may be paraphyletic) and chelicerates. Under this proposed classification scheme, Arachnomorpha is considered the sister group to Mandibulata (including insects, crustaceans and myriapods). [1]
The arachnomorph concept has been challenged by suggestions that the artiopods are more closely related to mandibulates, forming the clade Antennulata instead. [2] [1]
There is no consensus as to assigning Arachnomorpha a formal Linnean rank.
Arachnomorpha Lameere, 1890 [= Arachnata Paulus, 1979, = Palaeopoda Packard, 1903]
- † Nettapezoura
- † Dicranocaris
- † Trilobita Walch, 1771
- † Megacheira Hou & Bergstrom, 1997
- † Strabopida Hou & Bergström, 1997
- † Aglaspida Walcott, 1911
- † Cheloniellida Broili, 1932
-
Chelicerata Heymons 1901
- Family † Sanctacarididae Legg & Pates, 2017
- Class Pycnogonida Latreille, 1810
- Clade
Euchelicerata Weygoldt & Paulus, 1979
- Family † Offacolidae Sutton et al., 2002
- Clade Prosomapoda Lamsdell, 2013
Using fossil data, Bergström & Hou (2003) gave an outline of arthropod relationships emphasizing trilobitomorphs (a group that includes trilobites and trilobite-like animals). [3]
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- ^ a b Aria, Cédric (2022-04-26). "The origin and early evolution of arthropods". Biological Reviews. 97 (5): 1786–1809. doi: 10.1111/brv.12864. ISSN 1464-7931. PMID 35475316. S2CID 243269510.
- ^ Gerhard Scholtz & Gregory Edgecombe (2005). "Heads, Hox and the phylogenetic position of trilobites". Crustacea and Arthropod Relationships. CRC Press. pp. 139–165. CiteSeerX 10.1.1.130.2585.
- ^ Bergström, J. & Hou, X. G. (2003). "Arthropod origins" (PDF). Bulletin of Geosciences. 78 (4): 323–334. Archived from the original (PDF) on 2016-03-04. Retrieved 2014-03-03.
 | This arthropod-related article is a stub. You can help Wikipedia by expanding it. |
| Arachnomorpha Temporal range:
| |
|---|---|
|
| |
| Fossil of Bellacartwrightia calliteles, a trilobite | |
|
| |
| Lychas variatus, a scorpion chelicerate | |
|
Scientific classification
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Clade: |
Arachnomorpha Lameere, 1890 |
| Subgroups | |
| |
| Synonyms | |
| |
Arachnomorpha is a proposed subdivision or clade of Arthropoda, comprising the group formed by the trilobites and their close relatives ( Artiopoda), Megacheira (which may be paraphyletic) and chelicerates. Under this proposed classification scheme, Arachnomorpha is considered the sister group to Mandibulata (including insects, crustaceans and myriapods). [1]
The arachnomorph concept has been challenged by suggestions that the artiopods are more closely related to mandibulates, forming the clade Antennulata instead. [2] [1]
There is no consensus as to assigning Arachnomorpha a formal Linnean rank.
Arachnomorpha Lameere, 1890 [= Arachnata Paulus, 1979, = Palaeopoda Packard, 1903]
- † Nettapezoura
- † Dicranocaris
- † Trilobita Walch, 1771
- † Megacheira Hou & Bergstrom, 1997
- † Strabopida Hou & Bergström, 1997
- † Aglaspida Walcott, 1911
- † Cheloniellida Broili, 1932
-
Chelicerata Heymons 1901
- Family † Sanctacarididae Legg & Pates, 2017
- Class Pycnogonida Latreille, 1810
- Clade
Euchelicerata Weygoldt & Paulus, 1979
- Family † Offacolidae Sutton et al., 2002
- Clade Prosomapoda Lamsdell, 2013
Using fossil data, Bergström & Hou (2003) gave an outline of arthropod relationships emphasizing trilobitomorphs (a group that includes trilobites and trilobite-like animals). [3]
| ||||||||||||||||||||||||||||||||||||||||
- ^ a b Aria, Cédric (2022-04-26). "The origin and early evolution of arthropods". Biological Reviews. 97 (5): 1786–1809. doi: 10.1111/brv.12864. ISSN 1464-7931. PMID 35475316. S2CID 243269510.
- ^ Gerhard Scholtz & Gregory Edgecombe (2005). "Heads, Hox and the phylogenetic position of trilobites". Crustacea and Arthropod Relationships. CRC Press. pp. 139–165. CiteSeerX 10.1.1.130.2585.
- ^ Bergström, J. & Hou, X. G. (2003). "Arthropod origins" (PDF). Bulletin of Geosciences. 78 (4): 323–334. Archived from the original (PDF) on 2016-03-04. Retrieved 2014-03-03.
|
| This arthropod-related article is a stub. You can help Wikipedia by expanding it. |