102:
126:
327:, the organism may fall into a clade termed "Archaeopriapulida," a stem group to the Priapulids proper. However, the morphological similarity of these organisms to their modern cousins is remarkable, especially for the Burgess Shale. A phylogenetic analysis does not provide a great deal of resolution to the relationships between these basal worms.
379:
had a slender, cyndrical, radially symmetric body averaging 6 centimeters in length. Its proboscis was armed with circum-oral hooks at the anterior. There were about 10 of these hooks, equal in size and with prominent bases. Directly posterior was an unarmed space, followed by posteriorly directed
380:
spinose hooks. The trunk is annulated with 0.2 to 0.25 millimeter spacing, and carried rows of setae possibly performing sensory functions. The apparent absence of retractor muscles correlates with
622:
Huang, D. Y.; Vannier, J.; Chen, J.Y. (2004). "Anatomy and lifestyles of Early
Cambrian priapulid worms exemplified by Corynetis and Anningvermis from the Maotianshan Shale (SW China)".
821:
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was once thought to be, or once thought to resemble the hypothetical free-living ancestor of acanthocephalids. Two specimens of
903:
888:
536:
Caron, Jean-Bernard; Jackson, Donald A. (October 2006). "Taphonomy of the
Greater Phyllopod Bed community, Burgess Shale".
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s inability to significantly invert its proboscis. The organism was probably a burrowing predator.
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Wills, M. A. (1 April 1998). "Cambrian and Recent
Disparity: the Picture from Priapulids".
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Because it superficially resembles the modern-day internal parasites known as the
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Por, F. D. (1983). "Class
Seticoronaria and Phylogeny of the Phylum Priapulida".
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446:"Scalidophora – †palaeoscolecids, priapulids, mud dragons and brush heads"
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74:
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54:
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39:
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670:
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Conway Morris, S. (1979). "The
Burgess Shale (Middle Cambrian) Fauna".
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350:, in reference to the worm's prominent rows of hooks on its
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10.1666/0094-8373(1998)024[0177:CARDTP]2.3.CO;2
745:
Burgess Shale Fossil
Gallery. Virtual Museum of Canada
717:
Whittington, H.B. (1911). "Middle
Cambrian Annelids".
697:
Burgess Shale Fossil
Gallery. Virtual Museum of Canada
768:
290:, where they comprise < 0.01% of the community.
499:"The Origins and Evolution of the Acanthocephala"
354:. The species was previously placed in the genus
497:Conway Morris, S.; Crompton, D. W. T. (1982).
402:ungulate also named after Ancalagon the Black.
8:
425:Conway Morris, S. "Fossil priapulid worms".
335:The generic name is a homage to the dragon
293:Along with the other Cambrian worms such as
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228:(Walcott, 1911) Conway Morris, 1977 (type)
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472:Annual Review of Ecology and Systematics
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368:, who noted morphological differences.
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484:10.1146/annurev.es.10.110179.001551
601:10.1111/j.1463-6409.1983.tb00510.x
515:10.1111/j.1469-185X.1982.tb00365.x
14:
719:Cambrian Geology and Paleontology
751:from the original on 2023-03-21.
703:from the original on 2023-03-21.
456:from the original on 2023-04-22.
124:
16:Extinct genus of priapulid worms
427:Special Papers in Palaeontology
1:
914:Fossil taxa described in 1911
909:Fossil taxa described in 1977
267:worm known from the Cambrian
286:are known from the Greater
930:
899:Cambrian genus extinctions
558:10.2110/palo.2003.P05-070R
636:10.1080/00241160410005088
450:Mikko's Phylogeny Archive
278:or "spiny-headed worms,"
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121:Scientific classification
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23:
444:Haaramo, Mikko (2003).
904:Burgess Shale animals
889:Burgess Shale fossils
861:Paleobiology Database
848:Paleobiology Database
364:, but was removed by
550:2006Palai..21..451C
366:Simon Conway Morris
210:Conway Morris, 1977
191:Conway Morris, 1977
503:Biological Reviews
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835:Open Tree of Life
762:Taxon identifiers
741:"Ancalagon minor"
693:"Ancalagon minor"
589:Zoologica Scripta
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174:Archaeopriapulida
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27:Temporal range:
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246:Ottoia minor
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30:Mid Cambrian
18:
794:Wikispecies
478:: 327–349.
348:legendarium
894:Priapulida
883:Categories
725:: 109–142.
509:: 85–115.
407:References
400:mesonychid
382:Ancalagon'
372:Morphology
155:Stem group
630:: 21–33.
395:Ankalagon
377:Ancalagon
352:proboscis
337:Ancalagon
331:Etymology
306:Louisella
302:Selkirkia
284:Ancalagon
265:priapulid
205:Ancalagon
144:Kingdom:
138:Eukaryota
827:11483260
785:Q3414369
779:Wikidata
749:Archived
701:Archived
679:88647544
609:85091685
574:53646959
566:20173022
523:84098740
454:Archived
388:See also
280:A. minor
237:Synonyms
225:A. minor
216:Species
180:Family:
148:Animalia
134:Domain:
840:5004091
814:6880776
671:2401237
624:Lethaia
546:Bibcode
538:PALAIOS
312:Fieldia
197:Genus:
167:Class:
866:304645
677:
669:
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572:
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521:
357:Ottoia
321:, and
296:Ottoia
822:IRMNG
675:S2CID
667:JSTOR
605:S2CID
570:S2CID
562:JSTOR
519:S2CID
360:, as
853:7003
809:GBIF
398:, a
35:PreꞒ
659:doi
632:doi
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343:'s
339:of
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223:†
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90:N
80:K
75:J
70:T
65:P
60:C
55:D
50:S
45:O
40:Ꞓ
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