Capsospongia, formerly known as Corralia or Corralio, is a middle Cambrian sponge genus known from 3 specimens in the Burgess shale.[1] Its type and only species is Capsospongia undulata. It has a narrow base, and consists of bulging rings which get wider further up the sponge, resulting in a conical shape. Its open top was presumably used to expel water that had passed through the sponge cells and been filtered for nutrients.
Like most sponges, Capsospoingia had a spicular skeleton; long spicules parallel to the growth direction formed columns which were connected by shorter lateral spicules.
Historyedit
Capsospongia undulata was named in 1920 by Charles Walcott as Corralia undulata.[2] However, the name was preoccupied by Corralia Roewer, 1913, a member of Opiliones. In 1955, de Laubenfels renamed the genus Corralio, adopting an incorrect spelling of Corralia Walcott had used.[3][4] In 1986 Keith Rigby established the new genus Capsospongia for it.[5] In 2004, he and Desmond Collins described a third specimen.[5]
C. undulata intersects with the complicated taxonomic history of the anomalocarids. In 1911, Walcott had named two taxa, Peytoia and Laggania, which he interpreted as a jellyfish and a sea cucumber respectively.[6] In 1978, Simon Conway Morris recognized that the mouthparts of Laggania closely resembled Peytoia, but erroneously concluded that this was because Laggania was a composite fossil of a Peytoia and another organism, which he concluded was a sponge and suggested was probably a specimen of C. undulata.[4] However, it was subsequently determined that Laggania and Peytoia were partial specimens of a larger animal, a radiodont, which now bears the name Peytoia.[7][8]
^Walcott, Charles D. (1911-04-08). "Middle Cambrian holothurians and medusae". Smithsonian Miscellaneous Collections. 57 (3).
^Collins, Desmond (1996). "The "Evolution" of Anomalocaris and Its Classification in the Arthropod Class Dinocarida (nov.) and Order Radiodonta (nov.)". Journal of Paleontology. 70 (2): 280–293. doi:10.1017/S0022336000023362. JSTOR 1306391. S2CID 131622496.
^Daley, Allison C.; Bergström, Jan (2012). "The oral cone of Anomalocaris is not a classic peytoia". Naturwissenschaften. 99 (6): 501–504. doi:10.1007/s00114-012-0910-8. PMID 22476406. S2CID 253633303.
External linksedit
. Burgess Shale Fossil Gallery. Virtual Museum of Canada. 2011. Archived from the original on 2020-11-12. Retrieved 2023-01-21.
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capsospongia, formerly, known, corralia, corralio, middle, cambrian, sponge, genus, known, from, specimens, burgess, shale, type, only, species, undulata, narrow, base, consists, bulging, rings, which, wider, further, sponge, resulting, conical, shape, open, p. Capsospongia formerly known as Corralia or Corralio is a middle Cambrian sponge genus known from 3 specimens in the Burgess shale 1 Its type and only species is Capsospongia undulata It has a narrow base and consists of bulging rings which get wider further up the sponge resulting in a conical shape Its open top was presumably used to expel water that had passed through the sponge cells and been filtered for nutrients CapsospongiaTemporal range Middle Cambrian Burgess shale PreꞒ Ꞓ O S D C P T J K Pg N Artist s restorationScientific classificationDomain EukaryotaKingdom AnimaliaPhylum PoriferaClass DemospongiaeFamily AnthaspidellidaeGenus CapsospongiaRigby 1986Species C undulataBinomial name Capsospongia undulataWalcott 1920Like most sponges Capsospoingia had a spicular skeleton long spicules parallel to the growth direction formed columns which were connected by shorter lateral spicules History editCapsospongia undulata was named in 1920 by Charles Walcott as Corralia undulata 2 However the name was preoccupied by Corralia Roewer 1913 a member of Opiliones In 1955 de Laubenfels renamed the genus Corralio adopting an incorrect spelling of Corralia Walcott had used 3 4 In 1986 Keith Rigby established the new genus Capsospongia for it 5 In 2004 he and Desmond Collins described a third specimen 5 C undulata intersects with the complicated taxonomic history of the anomalocarids In 1911 Walcott had named two taxa Peytoia and Laggania which he interpreted as a jellyfish and a sea cucumber respectively 6 In 1978 Simon Conway Morris recognized that the mouthparts of Laggania closely resembled Peytoia but erroneously concluded that this was because Laggania was a composite fossil of a Peytoia and another organism which he concluded was a sponge and suggested was probably a specimen of C undulata 4 However it was subsequently determined that Laggania and Peytoia were partial specimens of a larger animal a radiodont which now bears the name Peytoia 7 8 References edit Briggs D E G Erwin D H Collier F J 1995 Fossils of the Burgess Shale Washington Smithsonian Inst Press ISBN 1 56098 659 X OCLC 231793738 Walcott Charles D 1920 Middle Cambrian Spongiae Smithsonian Miscellaneous Collections 67 6 de Laubenfels M W 1955 Porifera In Moore Raymond C ed Treatise on Invertebrate Paleontology Part E Archaeocyatha and Porifera a b Conway Morris S 1978 Laggania cambria Walcott A Composite Fossil Journal of Paleontology 52 1 126 131 JSTOR 1303799 a b Capsospongia undulata Burgess Shale Fossil Gallery Royal Ontario Museum Retrieved 2020 08 10 Walcott Charles D 1911 04 08 Middle Cambrian holothurians and medusae Smithsonian Miscellaneous Collections 57 3 Collins Desmond 1996 The Evolution of Anomalocaris and Its Classification in the Arthropod Class Dinocarida nov and Order Radiodonta nov Journal of Paleontology 70 2 280 293 doi 10 1017 S0022336000023362 JSTOR 1306391 S2CID 131622496 Daley Allison C Bergstrom Jan 2012 The oral cone of Anomalocaris is not a classic peytoia Naturwissenschaften 99 6 501 504 doi 10 1007 s00114 012 0910 8 PMID 22476406 S2CID 253633303 External links edit Capsospongia undulata Burgess Shale Fossil Gallery Virtual Museum of Canada 2011 Archived from the original on 2020 11 12 Retrieved 2023 01 21 nbsp This article related to a Cambrian animal is a stub You can help Wikipedia by expanding it vte nbsp This article about a demosponge is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Capsospongia amp oldid 1185029660, wikipedia, wiki, book, books, library,
