Opabinia regalis is an extinct, stem group arthropod found in the Middle Cambrian Burgess Shale Lagerstätte (505 million years ago) of British Columbia...
44 KB (4,820 words) - 19:10, 26 July 2024
extinct family of marine stem-arthropods. Its type and best-known genus is Opabinia. It also contains Utaurora, and Mieridduryn. Opabiniids closely resemble...
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arthropod. For example, Graham Budd's analyses of Kerygmachela in 1993 and of Opabinia in 1996 convinced him that these animals were similar to onychophorans...
130 KB (12,371 words) - 00:51, 30 July 2024
group compose of Radiodonta (Anomalocaris and relatives), Opabiniidae (Opabinia and relatives), and the "gilled lobopodians" Pambdelurion and Kerygmachelidae...
22 KB (2,010 words) - 12:43, 20 July 2024
the Burgess Shale fauna. Several of the finds, including the enigmatic Opabinia and Anomalocaris have some, though not all, features associated with arthropods...
24 KB (2,760 words) - 04:00, 27 July 2024
researchers that many of the Burgess Shale's "weird wonders", such as Opabinia and Hallucigenia, were evolutionary "aunts and cousins" of present-day...
94 KB (9,327 words) - 10:13, 19 July 2024
he wanted to call his book Homage to Opabinia. Gould wrote: I believe that Whittington's reconstruction of Opabinia in 1975 will stand as one of the great...
13 KB (1,267 words) - 07:01, 12 July 2024
Opabinia sparked modern interest in the Cambrian explosion....
102 KB (10,187 words) - 03:20, 15 July 2024
"Xenusians" or "Xenusiids" (class Xenusia). Certain Dinocaridid genera, such as Opabinia, Pambdelurion, and Kerygmachela, may also be regarded as lobopodians, sometimes...
71 KB (6,577 words) - 18:22, 30 July 2024
pteryx. Others pointed to a general resemblance between Tullimonstrum and Opabinia regalis, although Cave et al. note that they were too morphologically dissimilar...
31 KB (3,226 words) - 23:05, 21 June 2024
early marine predator, a member of the stem-arthropod group Radiodonta Opabinia was a bizarre stem-arthropod that possessed five stalked eyes, and a fused...
84 KB (9,044 words) - 05:28, 15 July 2024
far the only other known unquestionable opabiniid, with the other being Opabinia itself. There are other animals like Myoscolex and Mieridduryn that could...
7 KB (597 words) - 23:47, 20 August 2023
the most publicity, for example: Whittington's first presentation about Opabinia made the audience laugh. The reconstruction showed a soft-bodied animal...
20 KB (2,081 words) - 20:27, 11 July 2024
mixture of characters resembling various Cambrian arthropod taxa, notably Opabinia (eyes), radiodonts (frontalmost appendages) and megacheirans (trunk). The...
11 KB (1,081 words) - 23:10, 16 January 2024
a member of any known arthropod class. Organisms such as the five-eyed Opabinia and spiny slug-like Wiwaxia were so different from anything else known...
134 KB (15,421 words) - 07:52, 5 July 2024
Cambrian life: a commentary on Whittington (1975) 'The enigmatic animal Opabinia regalis, Middle Cambrian, Burgess Shale, British Columbia'". Philosophical...
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only the slightest resemblance to other known animals. Examples include Opabinia, with five eyes and a snout like a vacuum cleaner hose and Hallucigenia...
23 KB (2,509 words) - 16:01, 20 June 2024
the large bio-diversification event that occurred during the Cambrian. Opabinia, a genus of bizarre stem-group arthropod distantly related to the radiodonts...
44 KB (4,841 words) - 12:00, 26 July 2024
hypothesis derives tactopoda from a clade encompassing dinocaridids and Opabinia. A 2023 analysis concluded, on the basis of numerous morphological similarities...
73 KB (7,735 words) - 00:46, 21 July 2024
transitional forms between typical lobopodians and basal arthropods (e.g. Opabinia and Radiodonta). The positions of most other lobopodians (e.g. Hallucigenia...
30 KB (2,273 words) - 05:30, 15 July 2024
explosion. Invertebrates are grouped into different phyla (body plans). Opabinia, an extinct stem group arthropod appeared in the Middle Cambrian: 124–136 ...
63 KB (6,561 words) - 10:43, 23 June 2024
lobopodians with gill-bearing lateral flaps and also includes Kerygmachela and Opabinia. The gilled lobopodians are the closest relatives of the arthropods among...
11 KB (1,046 words) - 23:21, 13 June 2024
their body size and probably benthic or endobenthic prey. The opabiniids Opabinia (top) and Utaurora (bottom), were close relatives of the radiodonts The...
93 KB (7,491 words) - 03:34, 29 July 2024
affinity but has been interpreted as an annelid and as an arthropod close to Opabinia. Myoscolex is the earliest known example of phosphotized muscle tissue...
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Kimberichnus Vernanimalcula Burgess-type Marrella Radiodonts Halwaxiids Opabinia Odontogriphus Small shelly fauna Helcionellids Evolutionary concepts Trends...
8 KB (691 words) - 13:54, 15 March 2024
Kimberichnus Vernanimalcula Burgess-type Marrella Radiodonts Halwaxiids Opabinia Odontogriphus Small shelly fauna Helcionellids Evolutionary concepts Trends...
17 KB (1,853 words) - 21:56, 16 July 2024
Kimberichnus Vernanimalcula Burgess-type Marrella Radiodonts Halwaxiids Opabinia Odontogriphus Small shelly fauna Helcionellids Evolutionary concepts Trends...
31 KB (3,059 words) - 16:28, 12 June 2024
arthropod-like organisms found in the Burgess Shale. Other examples are Opabinia and Yohoia. The unusual and varied characteristics of these creatures were...
15 KB (1,502 words) - 23:45, 10 February 2024
lagerstätte increased interest in the issue when it revealed animals, such as Opabinia, which did not fit into any known phylum. At the time these were interpreted...
235 KB (22,633 words) - 18:43, 18 July 2024