Biology:Phytophilaspis
| Phytophilaspis | |
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Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| (unranked): | †Artiopoda |
| Subphylum: | †Trilobitomorpha |
| (unranked): | †Xandarellida |
| Genus: | †Phytophilaspis Ivantsov, 1999[1] |
| Species | |
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Phytophilaspis is a phosphatized[2] genus of trilobite-like arthropod with eyes, found in association with algal remains.[1] It dwelt in well-lit, shallow waters.[3]
Description
Phytophilaspis has several features in common with trilobites, including: tripartite division of the dorsal shield; presence of prominent pygidium; large eyes, situated on the pleural area of the cephalon; facial sutures, and shape of the hypostome. However, it differs from trilobites in many ways, including a reduced thorax, thoracic pleura fused to each other and to the cephalon and pygidium, facial sutures not crossing the eyes, and weak original mineralization of the cuticle.[1] Because of these differences, Phytophilaspis was originally assigned to the Artiopodan subclass Concilliterga, in an undetermined order and family.[1] It was later considered by Bergström and Hou as a xandarellid, along with Cindarella, Xandarella and Sinoburius.[4] A position that was supported in subsequent studies.[5]
See also
References
- ↑ 1.0 1.1 1.2 1.3 Ivantsov, A. Yu. (1999). "Trilobite-like arthropod from the Lower Cambrian of the Siberian Platform". Acta Palaeontologica Polonica 44 (4): 455–466. http://www.app.pan.pl/archive/published/app44/app44-455.pdf.
- ↑ Lin, J. ‐P.; Ivantsov, A. Y. U.; Briggs, D. E. G. (2010). "The cuticle of the enigmatic arthropod Phytophilaspis and biomineralization in Cambrian arthropods". Lethaia 44 (3): 344. doi:10.1111/j.1502-3931.2010.00245.x.
- ↑ "Articulated palaeoscolecid sclerite arrays from the Lower Cambrian of eastern Siberia". Acta Geologica Polonica 54 (1): 1–2. 2004. http://www.geo.uw.edu.pl/agp/table/pdf/54-1/wrona.pdf. Retrieved 2010-11-03.
- ↑ Bergström, J.; Hou, X. G. (2003). "Arthropod origins". Bulletin of Geosciences 78 (4): 323–334. http://mzp.cz/ris/ekodisk-new.nsf/1a76d1df1a0e29f0c1256e2800520b9d/9a21746463a798e9c125708f002d7766/$FILE/str.%20323-334.pdf. Retrieved 2014-03-03.
- ↑ Chen, Xiaohan; Ortega-Hernández, Javier; Wolfe, Joanna M.; Zhai, Dayou; Hou, Xianguang; Chen, Ailin; Mai, Huijuan; Liu, Yu (December 2019). "The appendicular morphology of Sinoburius lunaris and the evolution of the artiopodan clade Xandarellida (Euarthropoda, early Cambrian) from South China" (in en). BMC Evolutionary Biology 19 (1): 165. doi:10.1186/s12862-019-1491-3. ISSN 1471-2148. PMID 31387545.
External links
Wikidata ☰ Q16757499 entry
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