| 词条 | Dinocaridida |
| 释义 |
| image = Amplectobelua symbrachiata.jpg | image_caption = Amplectobelua symbrachiata | fossil_range = {{fossil range|Cambrian|Middle Devonian}} | display_parents = 3 | taxon = Dinocaridida | authority = Collins, 1996 | subdivision_ranks = Subgroups | subdivision =
}}{{CEXNAV}}Dinocaridida[1] is a proposed extinct taxon[2] of fossil arthropod-like marine animals found, with one exception, in the Cambrian and Ordovician.[3] It is subdivided into the anomalocaridids and the opabinids. The name of this group comes from Greek, "deinos" and "caris", meaning "terror shrimp" or "terror crab", due to their crustacean-like appearance and the hypotheses suggesting that members of this class were amongst the dominating and most diverse apex predators of their time.[4] Dinocaridids are bilaterally symmetrical, with a non-mineralized cuticle and a body divided into two major tagmata, or body-sections. The frontal section have two claws found just in front of the mouth, which is located on these creatures' underside. The body will possess thirteen or more segments, each with its own gill branch and swimming lobe. It is thought that these lobes moved in an up-and-down motion to propel the animal forward [5] in a fashion similar to the cuttlefish. The placement of Dinocaridida is uncertain: they appear to be a stem group to arthropods. In some recent works they are grouped with other enigmatic forms in the phylum Lobopodia.[6] The group is geographically widespread, and has been reported from Cambrian strata in Canada, China and Russia,[7] as well as the Ordovician of Morocco and Devonian of Germany.[8] Notes1. ^Greek, "Terrible crabs" – sometimes informally spelt Dinocarida, but the second 'id' is linguistically correct – see {{Cite journal| last1 = Hou | first1 = Xianguang| last2 = Bergström | first2 = Jan| last3 = Jie | first3 = Yang| title = Distinguishing anomalocaridids from arthropods and priapulids| journal = Geological Journal| volume = 41| issue = 3–4| pages = 259–269| year = 2006| doi = 10.1002/gj.1050}} 2. ^{{Cite journal| author1 = Collins | first1 = D. | title = The "Evolution" of Anomalocaris and Its Classification in the Arthropod Class Dinocarida (nov.) and Order Radiodonta (nov.) | jstor = 1306391 | journal = Journal of Paleontology | volume = 70 | issue = 2 | pages = 280–293 | year = 1996| doi=10.2307/1306391}} 3. ^Van Roy, P.; Briggs, D. E. G. (2011). "A giant Ordovician anomalocaridid". Nature 473 (7348): 510–513. doi:10.1038/nature09920. edit 4. ^[https://scitechdaily.com/earths-first-diverse-marine-predators-produced-killer-babies/ Earth’s First Diverse Marine Predators Produced Killer Babies] 5. ^{{Cite journal| last1 = Usami | first1 = Y.| title = Theoretical study on the body form and swimming pattern of Anomalocaris based on hydrodynamic simulation| journal = Journal of Theoretical Biology| volume = 238| issue = 1| pages = 11–17| year = 2006| pmid = 16002096| doi = 10.1016/j.jtbi.2005.05.008}} 6. ^{{Cite journal | last1 = Budd | first1 = G. E. | title = The morphology of Opabinia regalis and the reconstruction of the arthropod stem-group | journal = Lethaia | volume = 29 | pages = 1 | year = 1996 | doi = 10.1111/j.1502-3931.1996.tb01831.x}} 7. ^{{Cite journal | last1 = Ponomarenko | first1 = A. G. | title = First record of Dinocarida from Russia | journal = Paleontological Journal | volume = 44 | issue = 5 | pages = 503–504 | year = 2010 | doi = 10.1134/S0031030110050047}} 8. ^{{cite journal | first1=G.| last2=Briggs | first2= D. E. G. | first3=J. | title = A Great-Appendage Arthropod with a Radial Mouth from the Lower Devonian Hunsrück Slate, Germany| last1= Kühl | journal = Science| last3=Rust | volume = 323| issue= 5915 | pages = 771–3 | date=Feb 2009 | issn= 0036-8075| pmid= 19197061 | doi = 10.1126/science.1166586|bibcode = 2009Sci...323..771K }} References{{Reflist}}{{Wikispecies}}{{Taxonbar|from=Q1955055}}{{paleo-arthropod-stub}} 15 : Dinocarida|Cambrian arthropods|Devonian arthropods|Ordovician arthropods|Cambrian first appearances|Early Devonian extinctions|Burgess Shale fossils|Maotianshan shales fossils|Sirius Passet fossils|Paleozoic animals of Asia|Paleozoic animals of North America|Prehistoric China|Paleozoic Greenland|Arthropod classes|Prehistoric protostome classes |
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