Amplectobeluidae
| Amplectobeluidae | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Stem-group: | Arthropoda |
| Class: | †Dinocaridida |
| Order: | †Radiodonta |
| Clade: | †Amplectobeluidae |
Amplectobeluidae is a clade of Cambrian anomalocaridans.
Definition
In 2014, Amplectobeluidae was defined as the most inclusive clade including Amplectobelua symbrachiata but not Anomalocaris canadensis, Tamisiocaris borealis, or Hurdia victoria.[1]
Classification
Early in 2014, "Anomalocaris" kunmingensis was tentatively assigned to Amplectobelua by Vinther et al.[1] Later that year, however, the discoverers of Lyrarapax unguispinus ignored that assessment and created a genus within Amplectobelua sensu Vinther et al.[2]
Phylogeny
An a posteriori-weighted phylogenetic analysis in 2014 found the following relationships within the Amplectobeluidae:[2]
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Description
Amplectobeluids had robust, pincer-like frontal appendages, which made them better suited for hunting large, heavily-armored prey like trilobites than were most other radiodonts.[1][3] A distinctive physical feature only known in amplectobeluids is a pair of long caudal furcae.[4]
References
- 1 2 3 Vinther, Jakob; Stein, Martin; Longrich, Nicholas R.; Harper, David A. T. (2014). "A suspension-feeding anomalocarid from the Early Cambrian". Nature 507: 496–499. doi:10.1038/nature13010.
- 1 2 Cong, Peiyun; Ma, Xiaoya; Hou, Xianguang; Edgecombe, Gregory D.; Strausfeld, Nicholas J. (2014). "Brain structure resolves the segmental affinity of anomalocaridid appendages". Nature 513 (7519): 538. doi:10.1038/nature13486.
- ↑ Daley, Allison C.; Paterson, John R.; Edgecombe, Gregory D.; García-Bellido, Diego C.; Jago, James B. (2013). "New anatomical information on Anomalocaris from the Cambrian Emu Bay Shale and a reassessment of its inferred predatory habits". Palaeontology 56 (5): 971–990. doi:10.1111/pala.12029.
- ↑ Chen, Jun-Yuan; Ramsköld, Lars; Zhou, Gui-Qing (1994). "Evidence for monophyly and arthropod affinity for Cambrian giant predators". Science 264 (5163): 1304–1308. doi:10.1126/science.264.5163.1304. PMID 17780848.