Parazoa

Summary[edit] Description: English: Stromatoporoid top view showing mamelons; Columbus Limestone (Devonian) of Kelleys Island, Ohio. Date: 20 September 2010. Source: Own work. Author: Wilson44691. Photograph taken by Mark A. Wilson (Department of Geology, The College of Wooster). [1] Licensing[edit] Public domainPublic domainfalsefalse. : I, the copyright holder of this work, release this work into the public domain. This applies worldwide.In some countries this may not be legally possible; if so:I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.

Siphonia pyriformis

Summary[edit] Description: English: Restoration of the last archaeocyathan poriferan, Antarcticocyathus webberi, from Late Cambrian Antarctica. Date: 23 November 2020, 07:43:44. Source: Own work. Author: Apokryltaros.

Summary[edit] Description: English: Restauration the Ethmophyllum whitneyi. Date: 6 April 2014, 12:04:51. Source: Own work. Author: Leví Bernardo Martínez.

Stromatopora concentrica

Jerea pyriformis

Fragment zdvojené schránky archeocyáta. Úžlabí u Voznice -sever

Stromatopora concentrica

Siphonia ficus

Archaeocyatha

Jerea spec.

Summary[edit] Description: English: Fossiliferous limestone in the Cambrian of South Australia. The Ajax Limestone is a Lower Cambrian unit in parts of South Australia that has abundant archaeocyathans, formerly a mystery group of sessile, benthic, filter-feeding organisms that made a calcareous skeleton (Phylum Archaeocyatha). These fossils are now known to be an extinct group of sponges (Phylum Porifera). Except for one Upper Cambrian occurrence in Antarctica, archaeocyathans are only known from the Lower Cambrian. The classic localities for these fossils are Siberia and Australia. The Ajax archaeocyathan fauna is quite diverse, with over two dozen species (Taylor, 1910). Stratigraphy: Ajax Limestone, Atdabanian and Botomian Stages, Lower Cambrian Locality: ridge-hilltop outcrop south of Aroona Creek, Mt. Scott Range, west of the town of Leigh Creek, South Australia (vicinity of 30° 35.956’ South latitude, 138° 20.426’ East longitude) Reference cited: Taylor, T.G. 1910. The Archaeocyathinae from the Cambrian of South Australia with an account of the morphology and affinities of the whole class. Memoirs of the Royal Society of South Australia 2(2): 55-188, 16 pls. Date: 20 August 2006, 22:20:00. Source: https://www.flickr.com/photos/47445767@N05/50810166487/. Author: James St. John.

Summary[edit] Description: English: Turonia variabilis from France, on display at the Museo Civico di Storia Naturale di Milano. Date: 23 July 2015. Source: Own work. Author: Hectonichus.

Summary[edit] Description: Italiano: Fossil of Metaldetes, an extinct archaeocyathian- Took the picture at Museo di Storia naturale “Antonio Stoppani” - Venegono Inferiore. Date: 25 February 2013, 10:59:57. Source: Own work. Author: Ghedoghedo.

Summary[edit] Description: English: Fossiliferous limestone in the Cambrian of South Australia. The Ajax Limestone is a Lower Cambrian unit in parts of South Australia that has abundant archaeocyathans, formerly a mystery group of sessile, benthic, filter-feeding organisms that made a calcareous skeleton (Phylum Archaeocyatha). These fossils are now known to be an extinct group of sponges (Phylum Porifera). Except for one Upper Cambrian occurrence in Antarctica, archaeocyathans are only known from the Lower Cambrian. The classic localities for these fossils are Siberia and Australia. The Ajax archaeocyathan fauna is quite diverse, with over two dozen species (Taylor, 1910). Stratigraphy: Ajax Limestone, Atdabanian and Botomian Stages, Lower Cambrian Locality: ridge-hilltop outcrop south of Aroona Creek, Mt. Scott Range, west of the town of Leigh Creek, South Australia (vicinity of 30° 35.956’ South latitude, 138° 20.426’ East longitude) Reference cited: Taylor, T.G. 1910. The Archaeocyathinae from the Cambrian of South Australia with an account of the morphology and affinities of the whole class. Memoirs of the Royal Society of South Australia 2(2): 55-188, 16 pls. Date: 20 August 2006, 22:19:58. Source: https://www.flickr.com/photos/47445767@N05/50810049741/. Author: James St. John.

Summary[edit] Description: English: Fossiliferous limestone in the Cambrian of South Australia. The Ajax Limestone is a Lower Cambrian unit in parts of South Australia that has abundant archaeocyathans, formerly a mystery group of sessile, benthic, filter-feeding organisms that made a calcareous skeleton (Phylum Archaeocyatha). These fossils are now known to be an extinct group of sponges (Phylum Porifera). Except for one Upper Cambrian occurrence in Antarctica, archaeocyathans are only known from the Lower Cambrian. The classic localities for these fossils are Siberia and Australia. The Ajax archaeocyathan fauna is quite diverse, with over two dozen species (Taylor, 1910). Stratigraphy: Ajax Limestone, Atdabanian and Botomian Stages, Lower Cambrian Locality: ridge-hilltop outcrop south of Aroona Creek, Mt. Scott Range, west of the town of Leigh Creek, South Australia (vicinity of 30° 35.956’ South latitude, 138° 20.426’ East longitude) Reference cited: Taylor, T.G. 1910. The Archaeocyathinae from the Cambrian of South Australia with an account of the morphology and affinities of the whole class. Memoirs of the Royal Society of South Australia 2(2): 55-188, 16 pls. Date: 20 August 2006, 22:19:48. Source: https://www.flickr.com/photos/47445767@N05/50809312178/. Author: James St. John.

Summary[edit] Description: English: Fossiliferous limestone in the Cambrian of South Australia. The Ajax Limestone is a Lower Cambrian unit in parts of South Australia that has abundant archaeocyathans, formerly a mystery group of sessile, benthic, filter-feeding organisms that made a calcareous skeleton (Phylum Archaeocyatha). These fossils are now known to be an extinct group of sponges (Phylum Porifera). Except for one Upper Cambrian occurrence in Antarctica, archaeocyathans are only known from the Lower Cambrian. The classic localities for these fossils are Siberia and Australia. The Ajax archaeocyathan fauna is quite diverse, with over two dozen species (Taylor, 1910). Stratigraphy: Ajax Limestone, Atdabanian and Botomian Stages, Lower Cambrian Locality: ridge-hilltop outcrop south of Aroona Creek, Mt. Scott Range, west of the town of Leigh Creek, South Australia (vicinity of 30° 35.956’ South latitude, 138° 20.426’ East longitude) Reference cited: Taylor, T.G. 1910. The Archaeocyathinae from the Cambrian of South Australia with an account of the morphology and affinities of the whole class. Memoirs of the Royal Society of South Australia 2(2): 55-188, 16 pls. Date: 20 August 2006, 22:19:56. Source: https://www.flickr.com/photos/47445767@N05/50810050671/. Author: James St. John.

Summary[edit] Description: English: Fossiliferous limestone in the Cambrian of South Australia. The Ajax Limestone is a Lower Cambrian unit in parts of South Australia that has abundant archaeocyathans, formerly a mystery group of sessile, benthic, filter-feeding organisms that made a calcareous skeleton (Phylum Archaeocyatha). These fossils are now known to be an extinct group of sponges (Phylum Porifera). Except for one Upper Cambrian occurrence in Antarctica, archaeocyathans are only known from the Lower Cambrian. The classic localities for these fossils are Siberia and Australia. The Ajax archaeocyathan fauna is quite diverse, with over two dozen species (Taylor, 1910). Stratigraphy: Ajax Limestone, Atdabanian and Botomian Stages, Lower Cambrian Locality: ridge-hilltop outcrop south of Aroona Creek, Mt. Scott Range, west of the town of Leigh Creek, South Australia (vicinity of 30° 35.956’ South latitude, 138° 20.426’ East longitude) Reference cited: Taylor, T.G. 1910. The Archaeocyathinae from the Cambrian of South Australia with an account of the morphology and affinities of the whole class. Memoirs of the Royal Society of South Australia 2(2): 55-188, 16 pls. Date: 20 August 2006, 22:28:07. Source: https://www.flickr.com/photos/47445767@N05/50810048581/. Author: James St. John.

Summary[edit] Description: English: Silicified archaeocyathans in fossiliferous limestone in the Cambrian of South Australia. The Ajax Limestone is a Lower Cambrian unit in parts of South Australia that has abundant archaeocyathans, formerly a mystery group of sessile, benthic, filter-feeding organisms (Phylum Archaeocyatha). These fossils are now known to be an extinct group of sponges (Phylum Porifera). Except for one Upper Cambrian occurrence in Antarctica, archaeocyathans are only known from the Lower Cambrian. The classic localities for these fossils are Siberia and Australia. The Ajax archaeocyathan fauna is quite diverse, with over two dozen species (Taylor, 1910). The examples seen here are silicified - the original calcareous skeleton has been replaced by quartz, which is harder than the surrounding limestone matrix. With weathering and erosion, the silicified fossils project outward from the limestone host rock. Stratigraphy: Ajax Limestone, Atdabanian and Botomian Stages, Lower Cambrian Locality: ridge-hilltop outcrop south of Aroona Creek, Mt. Scott Range, west of the town of Leigh Creek, South Australia (vicinity of 30° 35.956’ South latitude, 138° 20.426’ East longitude) Reference cited: Taylor, T.G. 1910. The Archaeocyathinae from the Cambrian of South Australia with an account of the morphology and affinities of the whole class. Memoirs of the Royal Society of South Australia 2(2): 55-188, 16 pls. Date: 20 August 2006, 22:03:19. Source: https://www.flickr.com/photos/47445767@N05/50810033957/. Author: James St. John.

Summary[edit] Description: English: Fossiliferous limestone in the Cambrian of South Australia. The Ajax Limestone is a Lower Cambrian unit in parts of South Australia that has abundant archaeocyathans, formerly a mystery group of sessile, benthic, filter-feeding organisms that made a calcareous skeleton (Phylum Archaeocyatha). These fossils are now known to be an extinct group of sponges (Phylum Porifera). Except for one Upper Cambrian occurrence in Antarctica, archaeocyathans are only known from the Lower Cambrian. The classic localities for these fossils are Siberia and Australia. The Ajax archaeocyathan fauna is quite diverse, with over two dozen species (Taylor, 1910). Stratigraphy: Ajax Limestone, Atdabanian and Botomian Stages, Lower Cambrian Locality: ridge-hilltop outcrop south of Aroona Creek, Mt. Scott Range, west of the town of Leigh Creek, South Australia (vicinity of 30° 35.956’ South latitude, 138° 20.426’ East longitude) Reference cited: Taylor, T.G. 1910. The Archaeocyathinae from the Cambrian of South Australia with an account of the morphology and affinities of the whole class. Memoirs of the Royal Society of South Australia 2(2): 55-188, 16 pls. Date: 20 August 2006, 22:19:49. Source: https://www.flickr.com/photos/47445767@N05/50810051326/. Author: James St. John.

Summary[edit] Description: English: Fossiliferous limestone in the Cambrian of South Australia. The Ajax Limestone is a Lower Cambrian unit in parts of South Australia that has abundant archaeocyathans, formerly a mystery group of sessile, benthic, filter-feeding organisms that made a calcareous skeleton (Phylum Archaeocyatha). These fossils are now known to be an extinct group of sponges (Phylum Porifera). Except for one Upper Cambrian occurrence in Antarctica, archaeocyathans are only known from the Lower Cambrian. The classic localities for these fossils are Siberia and Australia. The Ajax archaeocyathan fauna is quite diverse, with over two dozen species (Taylor, 1910). Stratigraphy: Ajax Limestone, Atdabanian and Botomian Stages, Lower Cambrian Locality: ridge-hilltop outcrop south of Aroona Creek, Mt. Scott Range, west of the town of Leigh Creek, South Australia (vicinity of 30° 35.956’ South latitude, 138° 20.426’ East longitude) Reference cited: Taylor, T.G. 1910. The Archaeocyathinae from the Cambrian of South Australia with an account of the morphology and affinities of the whole class. Memoirs of the Royal Society of South Australia 2(2): 55-188, 16 pls. Date: 20 August 2006, 22:19:24. Source: https://www.flickr.com/photos/47445767@N05/50810052416/. Author: James St. John.

Fossile d'archéocyathe.

Summary[edit] Description: English: Fossiliferous limestone in the Cambrian of South Australia. The Ajax Limestone is a Lower Cambrian unit in parts of South Australia that has abundant archaeocyathans, formerly a mystery group of sessile, benthic, filter-feeding organisms that made a calcareous skeleton (Phylum Archaeocyatha). These fossils are now known to be an extinct group of sponges (Phylum Porifera). Except for one Upper Cambrian occurrence in Antarctica, archaeocyathans are only known from the Lower Cambrian. The classic localities for these fossils are Siberia and Australia. The Ajax archaeocyathan fauna is quite diverse, with over two dozen species (Taylor, 1910). Stratigraphy: Ajax Limestone, Atdabanian and Botomian Stages, Lower Cambrian Locality: ridge-hilltop outcrop south of Aroona Creek, Mt. Scott Range, west of the town of Leigh Creek, South Australia (vicinity of 30° 35.956’ South latitude, 138° 20.426’ East longitude) Reference cited: Taylor, T.G. 1910. The Archaeocyathinae from the Cambrian of South Australia with an account of the morphology and affinities of the whole class. Memoirs of the Royal Society of South Australia 2(2): 55-188, 16 pls. Date: 20 August 2006, 22:03:38. Source: https://www.flickr.com/photos/47445767@N05/50810032882/. Author: James St. John.

Summary[edit] Description: English: Fossiliferous limestone in the Cambrian of South Australia. The Ajax Limestone is a Lower Cambrian unit in parts of South Australia that has abundant archaeocyathans, formerly a mystery group of sessile, benthic, filter-feeding organisms that made a calcareous skeleton (Phylum Archaeocyatha). These fossils are now known to be an extinct group of sponges (Phylum Porifera). Except for one Upper Cambrian occurrence in Antarctica, archaeocyathans are only known from the Lower Cambrian. The classic localities for these fossils are Siberia and Australia. The Ajax archaeocyathan fauna is quite diverse, with over two dozen species (Taylor, 1910). Stratigraphy: Ajax Limestone, Atdabanian and Botomian Stages, Lower Cambrian Locality: ridge-hilltop outcrop south of Aroona Creek, Mt. Scott Range, west of the town of Leigh Creek, South Australia (vicinity of 30° 35.956’ South latitude, 138° 20.426’ East longitude) Reference cited: Taylor, T.G. 1910. The Archaeocyathinae from the Cambrian of South Australia with an account of the morphology and affinities of the whole class. Memoirs of the Royal Society of South Australia 2(2): 55-188, 16 pls. Date: 20 August 2006, 22:28:08. Source: https://www.flickr.com/photos/47445767@N05/50810048281/. Author: James St. John.