Amphiporida
Temporal range: Possible records from the Wenlock epoch
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Porifera
Class: †Stromatoporoidea
Order: †Amphiporida
Rukhin, 1938

Amphiporida is an extinct order of stromatoporoid sponges which lived from the mid-late Silurian (Wenlock or Ludlow epochs) to the Late Devonian (Famennian stage). Most amphiporids can be easily distinguished by their dendroid (bush-shaped) form, resembling a thicket of thin branches. Each 'branch' has an external frame-like 'sheath' surrounding the internal structure. Pillars (rods diverging up and away from the axis of growth) and isolated longitudinal canals are typical internal components, though the overall texture is more irregular than in other stromatoporoids. Laminae (flat layers) or cyst plates (convex layers) perpendicular to the axis of growth may also develop in some species.[1][2]

Amphiporida is an order with low diversity, and most species were restricted to waters corresponding to modern Asia.[3] Nevertheless, some species of Amphipora managed to become widespread and abundant reef-builders during the Frasnian stage of the Late Devonian.[4][5][6][7] The order contains a single family, Amphiporaidae. The family was previously spelled "Amphiporidae", but this was emended by the ICZN in 2013 to prevent confusion with a family of ribbon worms.[8][9]

Taxonomy

  • Family Amphiporaidae Rukhin, 1938 (emended 2013)
    • Amphipora Schulz, 1883 [middle Silurian (Wenlock?) – Late Devonian (Famennian)]
    • Clathrodictyella Bogoyavlenskaya, 1965 [late Silurian (Ludlow)]
    • Euryamphipora Klovan, 1966 [Middle Devonian (Givetian) – Late Devonian (Frasnian)]
    • Novitella Bogoyavlenskaya, 1984 [Late Devonian (Frasnian)]
    • Paramphipora Yavorsky, 1955 [middle Silurian (Wenlock?) – Late Devonian (Famennian?)]

References

  1. ↑ Stearn, Colin W.; Webby, Barry D.; Nestor, Heldur; Stock, Carl W. (1999). "Revised classification and terminology of Palaeozoic stromatoporoids" (PDF). Acta Palaeontologica Polonica. 44 (1): 1–70.
  2. ↑ Stearn, Colin W. (2015). "Chapter 12 (part): Stromatoporida, Syringostromatida, Amphiporida, and genera with uncertain affinities: Systematic Descriptions". In Selden, Paul A. (ed.). Part E, Porifera (Revised). Volumes 4 & 5. Treatise on Invertebrate Paleontology. Boulder, Colorado; Lawrence, Kansas: Geological Society of America; University of Kansas. pp. 781–836. ISBN 978-0-9903621-2-8.
  3. ↑ Stock, Carl W.; Nestor, Heldur; Webby, B.D. (2015). "Chapter 10 (part): Paleobiogeography of the Paleozoic Stromatoporoidea". In Selden, Paul A. (ed.). Part E, Porifera (Revised). Volumes 4 & 5. Treatise on Invertebrate Paleontology. Boulder, Colorado; Lawrence, Kansas: Geological Society of America; University of Kansas. pp. 653–689. ISBN 978-0-9903621-2-8.
  4. ↑ Cockbain, A.E. (1984). "Stromatoporoids from the Devonian reef complexes, Canning Basin, Western Australia" (PDF). Geological Survey of Western Australia Bulletin. 129: 1–108.
  5. ↑ Kershaw, Stephen; Brunton, Frank R (1999). "Palaeozoic stromatoporoid taphonomy: ecologic and environmental significance". Palaeogeography, Palaeoclimatology, Palaeoecology. 149 (1–4): 313–328. doi:10.1016/s0031-0182(98)00209-0. ISSN 0031-0182.
  6. ↑ Stearn, Colin W. (2015). "Chapter 9 (part): Diversity Trends of the Paleozoic Stromatoporoidea". In Selden, Paul A. (ed.). Part E, Porifera (Revised). Volumes 4 & 5. Treatise on Invertebrate Paleontology. Boulder, Colorado; Lawrence, Kansas: Geological Society of America; University of Kansas. pp. 593–597. ISBN 978-0-9903621-2-8.
  7. ↑ Kershaw, Stephen (2015). "Chapter 10 (part): Paleoecology of the Paleozoic Stromatoporoidea". In Selden, Paul A. (ed.). Part E, Porifera (Revised). Volumes 4 & 5. Treatise on Invertebrate Paleontology. Boulder, Colorado; Lawrence, Kansas: Geological Society of America; University of Kansas. pp. 631–651. ISBN 978-0-9903621-2-8.
  8. ↑ Özdikmen, Hüseyin; Demir, Hakan (2011). "Case 3540 amphiporidae Rukhin, 1938 (Porifera, Stromatoporata, Amphiporida): proposed emendation to amphiporaidae to remove homonymy with amphiporidae McIntosh, 1873 (Nemertea, Hoplonemertea)". The Bulletin of Zoological Nomenclature. 68 (3): 167–169. doi:10.21805/bzn.v68i3.a7. ISSN 0007-5167.
  9. ↑ "Opinion 2317 (Case 3540) amphiporidae Rukhin, 1938 (Porifera, Stromatoporata, Amphiporida): emended to amphiporaidae to remove homonymy with amphiporidae McIntosh, 1874 (Nemertea, Hoplonemertea)". The Bulletin of Zoological Nomenclature. 70 (2): 122–124. 2013. doi:10.21805/bzn.v70i2.a1. ISSN 0007-5167.
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