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Showing results for tags 'devonian age'.
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From the album: MY FOSSIL Collection - Dpaul7
Rugose Horn Coral Morocco Devonian age (~400 million years ago) The Rugosa, also called the Tetracorallia, are an extinct order of solitary and colonial corals that were abundant in Middle Ordovician to Late Permian seas. Solitary rugosans (e.g., Caninia, Lophophyllidium, Neozaphrentis, Streptelasma) are often referred to as horn corals because of a unique horn-shaped chamber with a wrinkled, or rugose, wall. Some solitary rugosans reached nearly a meter in length. However, some species of rugose corals could form large colonies (e.g., Lithostrotion). When radiating septa were present, they were usually in multiples of four, hence Tetracoralla in contrast to modern Hexacoralla, colonial polyps generally with sixfold symmetry. Rugose corals have a skeleton made of calcite that is often fossilized. Like modern corals (Scleractinia), rugose corals were invariably benthic, living on the sea floor or in a reef-framework. Some symbiotic rugose corals were endobionts of Stromatoporoidea, especially in the Silurian period. Rugose corals will also always have a columella, an axial rod which supports the septa running up the center of the corallite. It is present in rugose corals because they were mainly solitary and so required the extra support. Tabulate corals have no columella because they were always colonial and relied on the support of neighboring corallites. Kingdom: Animalia Phylum: Cnidaria Class: Anthozoa Subclass: †Rugosa (Milne-Edwards and Haime, 1850) -
From the album: MY FOSSIL Collection - Dpaul7
Rugose Horn Coral Morocco Devonian age (~400 million years ago) The Rugosa, also called the Tetracorallia, are an extinct order of solitary and colonial corals that were abundant in Middle Ordovician to Late Permian seas. Solitary rugosans (e.g., Caninia, Lophophyllidium, Neozaphrentis, Streptelasma) are often referred to as horn corals because of a unique horn-shaped chamber with a wrinkled, or rugose, wall. Some solitary rugosans reached nearly a meter in length. However, some species of rugose corals could form large colonies (e.g., Lithostrotion). When radiating septa were present, they were usually in multiples of four, hence Tetracoralla in contrast to modern Hexacoralla, colonial polyps generally with sixfold symmetry. Rugose corals have a skeleton made of calcite that is often fossilized. Like modern corals (Scleractinia), rugose corals were invariably benthic, living on the sea floor or in a reef-framework. Some symbiotic rugose corals were endobionts of Stromatoporoidea, especially in the Silurian period. Rugose corals will also always have a columella, an axial rod which supports the septa running up the center of the corallite. It is present in rugose corals because they were mainly solitary and so required the extra support. Tabulate corals have no columella because they were always colonial and relied on the support of neighboring corallites. Kingdom: Animalia Phylum: Cnidaria Class: Anthozoa Subclass: †Rugosa (Milne-Edwards and Haime, 1850) -
From the album: MY FOSSIL Collection - Dpaul7
Rugose Horn Coral Morocco Devonian age (~400 million years ago) The Rugosa, also called the Tetracorallia, are an extinct order of solitary and colonial corals that were abundant in Middle Ordovician to Late Permian seas. Solitary rugosans (e.g., Caninia, Lophophyllidium, Neozaphrentis, Streptelasma) are often referred to as horn corals because of a unique horn-shaped chamber with a wrinkled, or rugose, wall. Some solitary rugosans reached nearly a meter in length. However, some species of rugose corals could form large colonies (e.g., Lithostrotion). When radiating septa were present, they were usually in multiples of four, hence Tetracoralla in contrast to modern Hexacoralla, colonial polyps generally with sixfold symmetry. Rugose corals have a skeleton made of calcite that is often fossilized. Like modern corals (Scleractinia), rugose corals were invariably benthic, living on the sea floor or in a reef-framework. Some symbiotic rugose corals were endobionts of Stromatoporoidea, especially in the Silurian period. Rugose corals will also always have a columella, an axial rod which supports the septa running up the center of the corallite. It is present in rugose corals because they were mainly solitary and so required the extra support. Tabulate corals have no columella because they were always colonial and relied on the support of neighboring corallites. Kingdom: Animalia Phylum: Cnidaria Class: Anthozoa Subclass: †Rugosa (Milne-Edwards and Haime, 1850) -
From the album: MY FOSSIL Collection - Dpaul7
Rugose Horn Coral Morocco Devonian age (~400 million years ago) The Rugosa, also called the Tetracorallia, are an extinct order of solitary and colonial corals that were abundant in Middle Ordovician to Late Permian seas. Solitary rugosans (e.g., Caninia, Lophophyllidium, Neozaphrentis, Streptelasma) are often referred to as horn corals because of a unique horn-shaped chamber with a wrinkled, or rugose, wall. Some solitary rugosans reached nearly a meter in length. However, some species of rugose corals could form large colonies (e.g., Lithostrotion). When radiating septa were present, they were usually in multiples of four, hence Tetracoralla in contrast to modern Hexacoralla, colonial polyps generally with sixfold symmetry. Rugose corals have a skeleton made of calcite that is often fossilized. Like modern corals (Scleractinia), rugose corals were invariably benthic, living on the sea floor or in a reef-framework. Some symbiotic rugose corals were endobionts of Stromatoporoidea, especially in the Silurian period. Rugose corals will also always have a columella, an axial rod which supports the septa running up the center of the corallite. It is present in rugose corals because they were mainly solitary and so required the extra support. Tabulate corals have no columella because they were always colonial and relied on the support of neighboring corallites. Kingdom: Animalia Phylum: Cnidaria Class: Anthozoa Subclass: †Rugosa (Milne-Edwards and Haime, 1850) -
From the album: MY FOSSIL Collection - Dpaul7
Rugose Horn Coral Morocco Devonian age (~400 million years ago) The Rugosa, also called the Tetracorallia, are an extinct order of solitary and colonial corals that were abundant in Middle Ordovician to Late Permian seas. Solitary rugosans (e.g., Caninia, Lophophyllidium, Neozaphrentis, Streptelasma) are often referred to as horn corals because of a unique horn-shaped chamber with a wrinkled, or rugose, wall. Some solitary rugosans reached nearly a meter in length. However, some species of rugose corals could form large colonies (e.g., Lithostrotion). When radiating septa were present, they were usually in multiples of four, hence Tetracoralla in contrast to modern Hexacoralla, colonial polyps generally with sixfold symmetry. Rugose corals have a skeleton made of calcite that is often fossilized. Like modern corals (Scleractinia), rugose corals were invariably benthic, living on the sea floor or in a reef-framework. Some symbiotic rugose corals were endobionts of Stromatoporoidea, especially in the Silurian period. Rugose corals will also always have a columella, an axial rod which supports the septa running up the center of the corallite. It is present in rugose corals because they were mainly solitary and so required the extra support. Tabulate corals have no columella because they were always colonial and relied on the support of neighboring corallites. Kingdom: Animalia Phylum: Cnidaria Class: Anthozoa Subclass: †Rugosa (Milne-Edwards and Haime, 1850) -
From the album: MY FOSSIL Collection - Dpaul7
Rugose Horn Coral Morocco Devonian age (~400 million years ago) The Rugosa, also called the Tetracorallia, are an extinct order of solitary and colonial corals that were abundant in Middle Ordovician to Late Permian seas. Solitary rugosans (e.g., Caninia, Lophophyllidium, Neozaphrentis, Streptelasma) are often referred to as horn corals because of a unique horn-shaped chamber with a wrinkled, or rugose, wall. Some solitary rugosans reached nearly a meter in length. However, some species of rugose corals could form large colonies (e.g., Lithostrotion). When radiating septa were present, they were usually in multiples of four, hence Tetracoralla in contrast to modern Hexacoralla, colonial polyps generally with sixfold symmetry. Rugose corals have a skeleton made of calcite that is often fossilized. Like modern corals (Scleractinia), rugose corals were invariably benthic, living on the sea floor or in a reef-framework. Some symbiotic rugose corals were endobionts of Stromatoporoidea, especially in the Silurian period. Rugose corals will also always have a columella, an axial rod which supports the septa running up the center of the corallite. It is present in rugose corals because they were mainly solitary and so required the extra support. Tabulate corals have no columella because they were always colonial and relied on the support of neighboring corallites. Kingdom: Animalia Phylum: Cnidaria Class: Anthozoa Subclass: †Rugosa (Milne-Edwards and Haime, 1850) -
From the album: MY FOSSIL Collection - Dpaul7
Rugose Horn Coral Morocco Devonian age (~400 million years ago) The Rugosa, also called the Tetracorallia, are an extinct order of solitary and colonial corals that were abundant in Middle Ordovician to Late Permian seas. Solitary rugosans (e.g., Caninia, Lophophyllidium, Neozaphrentis, Streptelasma) are often referred to as horn corals because of a unique horn-shaped chamber with a wrinkled, or rugose, wall. Some solitary rugosans reached nearly a meter in length. However, some species of rugose corals could form large colonies (e.g., Lithostrotion). When radiating septa were present, they were usually in multiples of four, hence Tetracoralla in contrast to modern Hexacoralla, colonial polyps generally with sixfold symmetry. Rugose corals have a skeleton made of calcite that is often fossilized. Like modern corals (Scleractinia), rugose corals were invariably benthic, living on the sea floor or in a reef-framework. Some symbiotic rugose corals were endobionts of Stromatoporoidea, especially in the Silurian period. Rugose corals will also always have a columella, an axial rod which supports the septa running up the center of the corallite. It is present in rugose corals because they were mainly solitary and so required the extra support. Tabulate corals have no columella because they were always colonial and relied on the support of neighboring corallites. Kingdom: Animalia Phylum: Cnidaria Class: Anthozoa Subclass: †Rugosa (Milne-Edwards and Haime, 1850) -
From the album: MY FOSSIL Collection - Dpaul7
Fossil Hexagonaria Coral Morocco (Probably west Sahara) Devonian age (359-419 Million years ago) Hexagonaria is a genus of colonial rugose coral. Fossils are found in rock formations dating to the Devonian period, about 350 million years ago. Specimens of Hexagonaria can be found in most of the rock formations of the Traverse Group in Michigan. Fossils of this genus form Petoskey stones, the state stone of Michigan. Kingdom: Animalia Phylum: Cnidaria Class: Anthozoa Order: Stauriida Family: Disphyllidae Subfamily: Hexagonariinae Genus: †Hexagonaria -
From the album: MY FOSSIL Collection - Dpaul7
Fossil Hexagonaria Coral Morocco (Probably west Sahara) Devonian age (359-419 Million years ago) Hexagonaria is a genus of colonial rugose coral. Fossils are found in rock formations dating to the Devonian period, about 350 million years ago. Specimens of Hexagonaria can be found in most of the rock formations of the Traverse Group in Michigan. Fossils of this genus form Petoskey stones, the state stone of Michigan. Kingdom: Animalia Phylum: Cnidaria Class: Anthozoa Order: Stauriida Family: Disphyllidae Subfamily: Hexagonariinae Genus: †Hexagonaria -
From the album: MY FOSSIL Collection - Dpaul7
Lithostrotionella Coral Western Tennessee Devonian Age (~400 Million Years ago) This coral was a stationary epifaunal suspension feeder. Kingdom: Animalia Phylum: Cnidaria Class: Anthozoa Subclass: †Rugosa (Milne-Edwards and Haime, 1850) Order: †Stauriida (Verrill, 1865) Family: †Petalaxidae (Fomichev, 1953) Genus: †Lithostrotionella (Yabe and Hayasaka, 1915) -
From the album: MY FOSSIL Collection - Dpaul7
Lithostrotionella Coral Western Tennessee Devonian Age (~400 Million Years ago) This coral was a stationary epifaunal suspension feeder. Kingdom: Animalia Phylum: Cnidaria Class: Anthozoa Subclass: †Rugosa (Milne-Edwards and Haime, 1850) Order: †Stauriida (Verrill, 1865) Family: †Petalaxidae (Fomichev, 1953) Genus: †Lithostrotionella (Yabe and Hayasaka, 1915) -
From the album: MY FOSSIL Collection - Dpaul7
Kettneraspis sp. Trilobite Cravat Member-Bois d'Arc Formation, Coal County, Oklahoma Devonian Age (419.2- 358.9 million years ago) The Kettneraspis sp. trilobite was a bizarre creature of the ancient seas. The broad and long array of spines was likely a display protection against potential predators. The free cheeks of these extinct creatures had a unique fringe of small spines projecting outward, as well and one cannot wonder if they served to help stir up the ocean floor to aid in search of food as the creature crawled across the sea bottom. The eye stalks protruded up of the cephalon to a greater extent than most other trilobites of this region and period. In addition, a robust head spine projected upward and back from the region between the eyes. The trilobite measures 3/4" long and is on a matrix measuring 1 1/4" by 1". Kingdom: Animalia Phylum: Arthropoda Class: †Trilobita Order: †Lichida Family: †Odontopleuridae Genus: †Kettneraspis -
From the album: MY FOSSIL Collection - Dpaul7
Kettneraspis sp. Trilobite Cravat Member-Bois d'Arc Formation, Coal County, Oklahoma Devonian Age (419.2- 358.9 million years ago) The Kettneraspis sp. trilobite was a bizarre creature of the ancient seas. The broad and long array of spines was likely a display protection against potential predators. The free cheeks of these extinct creatures had a unique fringe of small spines projecting outward, as well and one cannot wonder if they served to help stir up the ocean floor to aid in search of food as the creature crawled across the sea bottom. The eye stalks protruded up of the cephalon to a greater extent than most other trilobites of this region and period. In addition, a robust head spine projected upward and back from the region between the eyes. The trilobite measures 3/4" long and is on a matrix measuring 1 1/4" by 1". Kingdom: Animalia Phylum: Arthropoda Class: †Trilobita Order: †Lichida Family: †Odontopleuridae Genus: †Kettneraspis -
From the album: MY FOSSIL Collection - Dpaul7
Kettneraspis sp. Trilobite Cravat Member-Bois d'Arc Formation, Coal County, Oklahoma Devonian Age (419.2- 358.9 million years ago) The Kettneraspis sp. trilobite was a bizarre creature of the ancient seas. The broad and long array of spines was likely a display protection against potential predators. The free cheeks of these extinct creatures had a unique fringe of small spines projecting outward, as well and one cannot wonder if they served to help stir up the ocean floor to aid in search of food as the creature crawled across the sea bottom. The eye stalks protruded up of the cephalon to a greater extent than most other trilobites of this region and period. In addition, a robust head spine projected upward and back from the region between the eyes. The trilobite measures 3/4" long and is on a matrix measuring 1 1/4" by 1". Kingdom: Animalia Phylum: Arthropoda Class: †Trilobita Order: †Lichida Family: †Odontopleuridae Genus: †Kettneraspis -
From the album: MY FOSSIL Collection - Dpaul7
Kettneraspis sp. Trilobite Cravat Member-Bois d'Arc Formation, Coal County, Oklahoma Devonian Age (419.2- 358.9 million years ago) The Kettneraspis sp. trilobite was a bizarre creature of the ancient seas. The broad and long array of spines was likely a display protection against potential predators. The free cheeks of these extinct creatures had a unique fringe of small spines projecting outward, as well and one cannot wonder if they served to help stir up the ocean floor to aid in search of food as the creature crawled across the sea bottom. The eye stalks protruded up of the cephalon to a greater extent than most other trilobites of this region and period. In addition, a robust head spine projected upward and back from the region between the eyes. The trilobite measures 3/4" long and is on a matrix measuring 1 1/4" by 1". Kingdom: Animalia Phylum: Arthropoda Class: †Trilobita Order: †Lichida Family: †Odontopleuridae Genus: †Kettneraspis -
From the album: MY FOSSIL Collection - Dpaul7
Paraconularia ulrichana fossil Belen Formation, Calamarca, Bolivia Devonian Age (~390 million years) Conulariids had elongated, pyramidal exoskeletons, made up of rows of calcium phosphate rods. Most were square or rectangular in cross section, with prominent grooves at the corners. They lived attached to hard objects by a flexible stalk, and often lived in groups. Presumably they were filter feeders; how they reproduced is not known. They aren't that uncommon; there are a number of genera, and they ranged from the Middle Ordovician to the Triassic. There are even a few cases in which conulariid soft parts have been preserved. Nonetheless, exactly what they were is still not settled. Because of their fourfold symmetry, they have often been placed in the Cnidaria by analogy with the fourfold Scyphozoa. However, their skeleton was very different from anything known in the Cnidaria, and they may represent a separate, extinct phylum, probably triploblastic (see Babcock 1991 for a defense of the separate phylum hypothesis, and Van Iten 1991 for a defense of the cnidarian hypothesis). Conulariids have been a subject of speculation for over a century and a half. They ranged from the Middle Ordovician to the Triassic. The Conulariids had elongated, pyramidal exoskeletons, made up of rows of calcium phosphate rods. Most were square or rectangular in cross section, with prominent grooves at the corners. They lived attached to hard objects by a flexible stalk, and often lived in groups. They are thought to have been filter feeders; how they reproduced is not known. Kingdom: Animalia Pylum: Cnidaria Class: †Scyphozoa Order: †Conulariida Family: †Conulariidae Genus: †Paraconularia Species: †ulrichana -
From the album: MY FOSSIL Collection - Dpaul7
Paraconularia ulrichana fossil Belen Formation, Calamarca, Bolivia Devonian Age (~390 million years) Conulariids had elongated, pyramidal exoskeletons, made up of rows of calcium phosphate rods. Most were square or rectangular in cross section, with prominent grooves at the corners. They lived attached to hard objects by a flexible stalk, and often lived in groups. Presumably they were filter feeders; how they reproduced is not known. They aren't that uncommon; there are a number of genera, and they ranged from the Middle Ordovician to the Triassic. There are even a few cases in which conulariid soft parts have been preserved. Nonetheless, exactly what they were is still not settled. Because of their fourfold symmetry, they have often been placed in the Cnidaria by analogy with the fourfold Scyphozoa. However, their skeleton was very different from anything known in the Cnidaria, and they may represent a separate, extinct phylum, probably triploblastic (see Babcock 1991 for a defense of the separate phylum hypothesis, and Van Iten 1991 for a defense of the cnidarian hypothesis). Conulariids have been a subject of speculation for over a century and a half. They ranged from the Middle Ordovician to the Triassic. The Conulariids had elongated, pyramidal exoskeletons, made up of rows of calcium phosphate rods. Most were square or rectangular in cross section, with prominent grooves at the corners. They lived attached to hard objects by a flexible stalk, and often lived in groups. They are thought to have been filter feeders; how they reproduced is not known. Kingdom: Animalia Pylum: Cnidaria Class: †Scyphozoa Order: †Conulariida Family: †Conulariidae Genus: †Paraconularia Species: †ulrichana -
From the album: MY FOSSIL Collection - Dpaul7
Paraconularia ulrichana fossil Belen Formation, Calamarca, Bolivia Devonian Age (~390 million years) Conulariids had elongated, pyramidal exoskeletons, made up of rows of calcium phosphate rods. Most were square or rectangular in cross section, with prominent grooves at the corners. They lived attached to hard objects by a flexible stalk, and often lived in groups. Presumably they were filter feeders; how they reproduced is not known. They aren't that uncommon; there are a number of genera, and they ranged from the Middle Ordovician to the Triassic. There are even a few cases in which conulariid soft parts have been preserved. Nonetheless, exactly what they were is still not settled. Because of their fourfold symmetry, they have often been placed in the Cnidaria by analogy with the fourfold Scyphozoa. However, their skeleton was very different from anything known in the Cnidaria, and they may represent a separate, extinct phylum, probably triploblastic (see Babcock 1991 for a defense of the separate phylum hypothesis, and Van Iten 1991 for a defense of the cnidarian hypothesis). Conulariids have been a subject of speculation for over a century and a half. They ranged from the Middle Ordovician to the Triassic. The Conulariids had elongated, pyramidal exoskeletons, made up of rows of calcium phosphate rods. Most were square or rectangular in cross section, with prominent grooves at the corners. They lived attached to hard objects by a flexible stalk, and often lived in groups. They are thought to have been filter feeders; how they reproduced is not known. Kingdom: Animalia Pylum: Cnidaria Class: †Scyphozoa Order: †Conulariida Family: †Conulariidae Genus: †Paraconularia Species: †ulrichana-
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