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Showing results for tags 'Brachiopod'.
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From the album: MY FOSSIL Collection - Dpaul7
Obturamentella wadei Brachiopod Bois d'Arc Formation (overlays the Haragan) of Oklahoma TIME PERIOD: Lower Devonian (359-383 Million Years Ago) The taxonomic order Rhynchonellida is one of the two main groups of living articulate brachiopods, the other being the order Terebratulida. They are recognized by their strongly ribbed wedge-shaped or nut-like shells, and the very short hinge line. Kingdom: Animalia Phylum: Brachiopoda Class: Rhynchonellata Order: Rhynchonellida Family: †Obturamentellidae Genus: †Obturamentella Species: †wadei -
From the album: MY FOSSIL Collection - Dpaul7
Obturamentella wadei Brachiopod Bois d'Arc Formation (overlays the Haragan) of Oklahoma TIME PERIOD: Lower Devonian (359-383 Million Years Ago) The taxonomic order Rhynchonellida is one of the two main groups of living articulate brachiopods, the other being the order Terebratulida. They are recognized by their strongly ribbed wedge-shaped or nut-like shells, and the very short hinge line. Kingdom: Animalia Phylum: Brachiopoda Class: Rhynchonellata Order: Rhynchonellida Family: †Obturamentellidae Genus: †Obturamentella Species: †wadei -
From the album: MY FOSSIL Collection - Dpaul7
Meristella atoka Brachiopod Bois d'Arc Formation (overlays the Haragan) of Oklahoma TIME PERIOD: Lower Devonian (359-383 Million Years Ago) Meristella is an extinct genus of brachiopods found from the Late Silurian to the Late Devonian They are characterized by a smooth oval shell and a prominent incurved beak on the pedicle valve. Meristella is placed in the family Meristellidae of the articulate brachiopod order Athyridida. Kingdom: Animalia Phylum: Brachiopoda Class: Rhynchonellata Order: †Athyridida Family: †Meristellidae Genus: †Meristella Species: †atoka -
From the album: MY FOSSIL Collection - Dpaul7
Meristella atoka Brachiopod Bois d'Arc Formation (overlays the Haragan) of Oklahoma TIME PERIOD: Lower Devonian (359-383 Million Years Ago) Meristella is an extinct genus of brachiopods found from the Late Silurian to the Late Devonian They are characterized by a smooth oval shell and a prominent incurved beak on the pedicle valve. Meristella is placed in the family Meristellidae of the articulate brachiopod order Athyridida. Kingdom: Animalia Phylum: Brachiopoda Class: Rhynchonellata Order: †Athyridida Family: †Meristellidae Genus: †Meristella Species: †atoka -
From the album: MY FOSSIL Collection - Dpaul7
Atrypa oklahomensis Brachiopod Bois d'Arc Formation (overlays the Haragan) of Oklahoma TIME PERIOD: Lower Devonian (359-383 Million Years Ago) Atrypa is a genus of brachiopod with shells round to short egg-shaped, covered with many fine radial ridges (or costae), that split further out and growthlines perpendicular to the costae and 2-3 times wider spaced. The pedunculate valve is a little convex, but tends to level out or even become slightly concave toward the anterior margin (that is: opposite hinge and pedicle). The brachial valve is highly convex. There is no interarea (that is a flat area bordering the hinge line approximately perpendicular with the rest of the valve) in either valve. Atrypa was a cosmopolitan and occurred from the late Lower Silurian (Telychian) to the early Upper Devonian (Frasnian). Other sources expand the range from the Late Ordovician to Carboniferous, approximately from 449 to 336 Ma. A proposed new species, A. harrisi, was found in the trilobite-rich Floresta Formation in Boyacá, Colombia. Kingdom: Animalia Phylum: Brachiopoda Class: Rhynchonellata Order: †Spiriferida Family: †Atrypidae Genus: †Atrypa Species: †oklahomensis -
From the album: MY FOSSIL Collection - Dpaul7
Atrypa oklahomensis Brachiopod Bois d'Arc Formation (overlays the Haragan) of Oklahoma TIME PERIOD: Lower Devonian (359-383 Million Years Ago) Atrypa is a genus of brachiopod with shells round to short egg-shaped, covered with many fine radial ridges (or costae), that split further out and growthlines perpendicular to the costae and 2-3 times wider spaced. The pedunculate valve is a little convex, but tends to level out or even become slightly concave toward the anterior margin (that is: opposite hinge and pedicle). The brachial valve is highly convex. There is no interarea (that is a flat area bordering the hinge line approximately perpendicular with the rest of the valve) in either valve. Atrypa was a cosmopolitan and occurred from the late Lower Silurian (Telychian) to the early Upper Devonian (Frasnian). Other sources expand the range from the Late Ordovician to Carboniferous, approximately from 449 to 336 Ma. A proposed new species, A. harrisi, was found in the trilobite-rich Floresta Formation in Boyacá, Colombia. Kingdom: Animalia Phylum: Brachiopoda Class: Rhynchonellata Order: †Spiriferida Family: †Atrypidae Genus: †Atrypa Species: †oklahomensis -
Greetings, I have been collecting and reading about Natural History and Paleontology on and off for years and I have a modest but compreshensive invertebrate collection and small verebrate collection and a revolving collection of Paleontology/Biology books. The focus of my collection would be Paleozoic shelly things. I have about 150 unique species of Brachiopod and equal number of Paleozoic and more recent bivalves. Retirement approaches and I look forward to fossil collecting trips across America.
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From the album: MY FOSSIL Collection - Dpaul7
Eumetria vera Brachiopods SITE LOCATION: Chesterian Zone of the Bangor Limestone Formation in northern Alabama TIME PERIOD: Mississippian Period (ca 325,000,000 yrs old) Athyridida is an order of Paleozoic brachiopods included in the Rhynchonellata, which makes up part of the articulate brachiopods. The Athyridida are the Rostrospracea of R.C Moore, 1952,[3] considered at that time to be a suborder of the Spiriferida. As with the Spiriferida, the Athyridida have outwardly directed spiral brachidia that support the lophophores on either side, but instead have non-plicate shells with rounded outlines and prominent beaks but almost no inner areas on the pedicle valve. Athyridids began early in the Silurian, reached their greatest diversity in the following Devonian, and from then declined steadily until almost becoming extinct at the end of the Permian The order rejuvenated somewhat during the Triassic, only to decline again until becoming extinct in the Jurassic. Athyris, Composita, and Meristella are representative genera. Three suborders have been defined. Kingdom: Animalia Phylum: Brachiopoda Class: Rhynchonellata Order: †Athyridida Family: †Retziidae Genus: †Eumetria Species: †vera -
Brachiopods- Anthracospirifer increbescens specimen 2 a.jpg
Dpaul7 posted a gallery image in Member Collections
From the album: MY FOSSIL Collection - Dpaul7
Anthracospirifer increbescens brachiopod in matrix SITE LOCATION: Chesterian Zone of the Bangor Limestone Formation in northern Alabama TIME PERIOD: Mississippian Period (ca 325,000,000 yrs old) Spiriferida is an order of extinct articulate brachiopod fossils which are known for their long hinge-line, which is often the widest part of the shell. In some genera (e.g. Mucrospirifer) it is greatly elongated, giving them a wing-like appearance. They often have a deep fold down the center of the shell. The feature that gives the spiriferids their name ("spiral-bearers") is the internal support for the lophophore; this brachidium, which is often preserved in fossils, is a thin ribbon of calcite that is typically coiled tightly within the shell. Spiriferids first appear in the Late Ordovician with the appearance of Eospirifer radiatus. They increased in diversity throughout the Silurian and underwent a dramatic evolutionary radiation during the Devonian period, reaching peak development in variety and numbers. Spiriferida survived the great Permian extinction, finally becoming extinct during the Early Jurassic. Fossils of this order are often preserved as pyrite. Kingdom: Animalia Phylum: Brachiopoda Class: Rhynchonellata Order: †Spiriferida Family: †Spiriferidae Genus: †Anthracospirifer Species: †increbescens -
Brachiopods- Anthracospirifer increbescens specimen 2 a.jpg
Dpaul7 posted a gallery image in Member Collections
From the album: MY FOSSIL Collection - Dpaul7
Anthracospirifer increbescens brachiopod in matrix SITE LOCATION: Chesterian Zone of the Bangor Limestone Formation in northern Alabama TIME PERIOD: Mississippian Period (ca 325,000,000 yrs old) Spiriferida is an order of extinct articulate brachiopod fossils which are known for their long hinge-line, which is often the widest part of the shell. In some genera (e.g. Mucrospirifer) it is greatly elongated, giving them a wing-like appearance. They often have a deep fold down the center of the shell. The feature that gives the spiriferids their name ("spiral-bearers") is the internal support for the lophophore; this brachidium, which is often preserved in fossils, is a thin ribbon of calcite that is typically coiled tightly within the shell. Spiriferids first appear in the Late Ordovician with the appearance of Eospirifer radiatus. They increased in diversity throughout the Silurian and underwent a dramatic evolutionary radiation during the Devonian period, reaching peak development in variety and numbers. Spiriferida survived the great Permian extinction, finally becoming extinct during the Early Jurassic. Fossils of this order are often preserved as pyrite. Kingdom: Animalia Phylum: Brachiopoda Class: Rhynchonellata Order: †Spiriferida Family: †Spiriferidae Genus: †Anthracospirifer Species: †increbescens -
From the album: MY FOSSIL Collection - Dpaul7
Brachiopod Fossil, with Tentaculites SITE LOCATION: West Virginia TIME PERIOD: Devonian Period (over 350 million years ago) Nicely detailed small Devonian brachiopod from West Virginia as well as several tentaculites impressions. Brachiopods, phylum Brachiopoda, are a group of lophotrochozoan animals that have hard "valves" on the upper and lower surfaces, unlike the left and right arrangement in bivalve molluscs. Tentaculites is an extinct genus of conical fossils of uncertain affinity, class Tentaculita, although it is not the only member of the class. It is known from Lower Ordovician to Upper Devonian deposits both as calcitic shells with a brachiopod-like microstructure and carbonaceous 'linings'. The "tentaculites" (i.e. tentaculita) are also referred to as the styliolinids. The taxonomic classification of tentaculitids is uncertain, but some group them with pteropods. They may also be related to other conical shells of uncertain affinity including cornulitids, Anticalyptraea, microconchids and trypanoporids. Their shell microstructure has warranted their comparison with the brachiopods and phoronids. Tentaculitids have ribbed, cone-shaped shells which range in length from 5 to 20 mm. Some species septate; their embryonic shell, which is retained, forms a small, sometimes spherical, chamber. Classification below is for both animals, and is split. Kingdom: Animalia/Animalia Phylum: Brachiopoda/Mollusca (?) Class: Unknown/†Tentaculita Order: Unknown/†Tentaculitida Family: Unknown/†Tentaculitidae Genus: Unknown/†Tentaculites -
From the album: MY FOSSIL Collection - Dpaul7
Brachiopod Fossil, with Tentaculites SITE LOCATION: West Virginia TIME PERIOD: Devonian Period (over 350 million years ago) Nicely detailed small Devonian brachiopod from West Virginia as well as several tentaculites impressions. Brachiopods, phylum Brachiopoda, are a group of lophotrochozoan animals that have hard "valves" on the upper and lower surfaces, unlike the left and right arrangement in bivalve molluscs. Tentaculites is an extinct genus of conical fossils of uncertain affinity, class Tentaculita, although it is not the only member of the class. It is known from Lower Ordovician to Upper Devonian deposits both as calcitic shells with a brachiopod-like microstructure and carbonaceous 'linings'. The "tentaculites" (i.e. tentaculita) are also referred to as the styliolinids. The taxonomic classification of tentaculitids is uncertain, but some group them with pteropods. They may also be related to other conical shells of uncertain affinity including cornulitids, Anticalyptraea, microconchids and trypanoporids. Their shell microstructure has warranted their comparison with the brachiopods and phoronids. Tentaculitids have ribbed, cone-shaped shells which range in length from 5 to 20 mm. Some species septate; their embryonic shell, which is retained, forms a small, sometimes spherical, chamber. Classification below is for both animals, and is split. Kingdom: Animalia/Animalia Phylum: Brachiopoda/Mollusca (?) Class: Unknown/†Tentaculita Order: Unknown/†Tentaculitida Family: Unknown/†Tentaculitidae Genus: Unknown/†Tentaculites -
From the album: MY FOSSIL Collection - Dpaul7
Brachiopod Fossil, with Tentaculites SITE LOCATION: West Virginia TIME PERIOD: Devonian Period (over 350 million years ago) Nicely detailed small Devonian brachiopod from West Virginia as well as several tentaculites impressions. Brachiopods, phylum Brachiopoda, are a group of lophotrochozoan animals that have hard "valves" on the upper and lower surfaces, unlike the left and right arrangement in bivalve molluscs. Tentaculites is an extinct genus of conical fossils of uncertain affinity, class Tentaculita, although it is not the only member of the class. It is known from Lower Ordovician to Upper Devonian deposits both as calcitic shells with a brachiopod-like microstructure and carbonaceous 'linings'. The "tentaculites" (i.e. tentaculita) are also referred to as the styliolinids. The taxonomic classification of tentaculitids is uncertain, but some group them with pteropods. They may also be related to other conical shells of uncertain affinity including cornulitids, Anticalyptraea, microconchids and trypanoporids. Their shell microstructure has warranted their comparison with the brachiopods and phoronids. Tentaculitids have ribbed, cone-shaped shells which range in length from 5 to 20 mm. Some species septate; their embryonic shell, which is retained, forms a small, sometimes spherical, chamber. Classification below is for both animals, and is split. Kingdom: Animalia/Animalia Phylum: Brachiopoda/Mollusca (?) Class: Unknown/†Tentaculita Order: Unknown/†Tentaculitida Family: Unknown/†Tentaculitidae Genus: Unknown/†Tentaculites -
From the album: MY FOSSIL Collection - Dpaul7
Brachiopod Fossil, with Tentaculites SITE LOCATION: West Virginia TIME PERIOD: Devonian Period (over 350 million years ago) Nicely detailed small Devonian brachiopod from West Virginia as well as several tentaculites impressions. Brachiopods, phylum Brachiopoda, are a group of lophotrochozoan animals that have hard "valves" on the upper and lower surfaces, unlike the left and right arrangement in bivalve molluscs. Tentaculites is an extinct genus of conical fossils of uncertain affinity, class Tentaculita, although it is not the only member of the class. It is known from Lower Ordovician to Upper Devonian deposits both as calcitic shells with a brachiopod-like microstructure and carbonaceous 'linings'. The "tentaculites" (i.e. tentaculita) are also referred to as the styliolinids. The taxonomic classification of tentaculitids is uncertain, but some group them with pteropods. They may also be related to other conical shells of uncertain affinity including cornulitids, Anticalyptraea, microconchids and trypanoporids. Their shell microstructure has warranted their comparison with the brachiopods and phoronids. Tentaculitids have ribbed, cone-shaped shells which range in length from 5 to 20 mm. Some species septate; their embryonic shell, which is retained, forms a small, sometimes spherical, chamber. Classification below is for both animals, and is split. Kingdom: Animalia/Animalia Phylum: Brachiopoda/Mollusca (?) Class: Unknown/†Tentaculita Order: Unknown/†Tentaculitida Family: Unknown/†Tentaculitidae Genus: Unknown/†Tentaculites -
Mucrospirifer thedfordensis - fossil brachiopod A.JPG
Dpaul7 posted a gallery image in Member Collections
From the album: MY FOSSIL Collection - Dpaul7
Fossil Brachiopod - Mucrospirifer thedfordensis (Front and back views) Widder Formation, Ontario, Canada Middle Devonian 383-393 Million Years ago Mucrospirifer is a genus of extinct brachiopods in the class Rhynchonellata (Articulata) and the order Spiriferida. They are sometimes known as "butterfly shells". Like other brachiopods, they were filter feeders. These fossils occur mainly in Middle Devonian strata. The biconvex shell was typically 2.5 cm long, but sometimes grew to 4 cm. The shell of Mucrospirifer has a fold, sulcus and costae. It is greatly elongated along the hinge line, which extends outward to form sharp points. This gives them a fin- or wing-like appearance. The apex area (umbo) of the pedicle valve contains a small fold for the pedicle. Mucrospirifer lived in muddy marine sediments, and were attached to the sea floor via the pedicle. The shell sometimes looks like two seashells stuck together. Brachiopods, sometimes called lamp shells, are filter feeders and are attached to the sea floor by a fibrous pedicle that extends from a hole in the pedicle valve. The “wings” of the spirifers possibly stabilized the shell in the sea floor sediments. In order to feed, brachiopod shells had to be open. The lophophore, a combination of a feeding and respiratory organ, had a number of tiny tentacles that created a current to allow filter feeding. It was supported by two arms attached to the interior of the brachial valve. This was an evolutionary disadvantage when compared to bivalve molluscs, which could feed through siphons with the shells tightly closed. The first brachiopods appeared in the early Cambrian. Some brachiopods have survived competition from molluscs, today generally living in very deep or cold water. Kingdom: Animalia Phylum: Brachiopoda Class: Rhynchonellata Order: †Spiriferida Family: †Mucrospiriferidae Genus: †Mucrospirifer Species: †thedfordensis -
Mucrospirifer thedfordensis - fossil brachiopod A.JPG
Dpaul7 posted a gallery image in Member Collections
From the album: MY FOSSIL Collection - Dpaul7
Fossil Brachiopod - Mucrospirifer thedfordensis (Front and back views) Widder Formation, Ontario, Canada Middle Devonian 383-393 Million Years ago Mucrospirifer is a genus of extinct brachiopods in the class Rhynchonellata (Articulata) and the order Spiriferida. They are sometimes known as "butterfly shells". Like other brachiopods, they were filter feeders. These fossils occur mainly in Middle Devonian strata. The biconvex shell was typically 2.5 cm long, but sometimes grew to 4 cm. The shell of Mucrospirifer has a fold, sulcus and costae. It is greatly elongated along the hinge line, which extends outward to form sharp points. This gives them a fin- or wing-like appearance. The apex area (umbo) of the pedicle valve contains a small fold for the pedicle. Mucrospirifer lived in muddy marine sediments, and were attached to the sea floor via the pedicle. The shell sometimes looks like two seashells stuck together. Brachiopods, sometimes called lamp shells, are filter feeders and are attached to the sea floor by a fibrous pedicle that extends from a hole in the pedicle valve. The “wings” of the spirifers possibly stabilized the shell in the sea floor sediments. In order to feed, brachiopod shells had to be open. The lophophore, a combination of a feeding and respiratory organ, had a number of tiny tentacles that created a current to allow filter feeding. It was supported by two arms attached to the interior of the brachial valve. This was an evolutionary disadvantage when compared to bivalve molluscs, which could feed through siphons with the shells tightly closed. The first brachiopods appeared in the early Cambrian. Some brachiopods have survived competition from molluscs, today generally living in very deep or cold water. Kingdom: Animalia Phylum: Brachiopoda Class: Rhynchonellata Order: †Spiriferida Family: †Mucrospiriferidae Genus: †Mucrospirifer Species: †thedfordensis -
A friend of mine found an interesting fossil a Keifer Creek in St.Louis Missouri. He was unsure of what it was but I assumed that it was a horn coral or perhaps a vertically split brachiopod. I am not the best at identifying fossils so I was hoping someone on the forum with more experience could take a look at it. The fossil being referred to is in the middle of the stone.
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Found this fossil at Rockford, Iowa, last week with a student group, and it didn't show up on our identification sheets. It's about the size of a quarter. Can anyone tell us what it is? Thank you.
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I found this fossil near a lake in Hamilton, Nj. The rock in the area is mostly Triassic and Crataceous exempt for a small section of rock that is from the Cambrian. I think that this is an imprint of a brachiopod because of all the ridges. Here's a picture. I hope that you can identify this. Thanks in advance.
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Found as surface float near the top of the Windom exposure, a few feet below the Genundewa Limestone at Penn-Dixie Quarry in Hamburg, NY. Distinguished from Ambocoelia umbonata by the hinge width; the hinge of A. umbonata spans the width of the valve, while that of E. praeumbona is narrower. E. praeumbona also shows a convex profile to the brachial valve, and grew to a larger size. E. praeumbona is common in the Hamilton Group only within the upper layers of the Windom Member. Originally designated Orthis praeumbona, later assigned to Ambocoelia, then reassigned to Emanuella in 1990. References: Hall, J. Palaeontology of New York v. 4. (1867) Fossilworks. http://fossilworks.org Yale Peabody Museum Collections website (http://peabody.yale.edu/collections/invertebrate-paleontology) Brett, C. E. Biostratigraphy and Paleoecology of the Windom Shale Member (Moscow Formation) in Erie County, NY. 1974. State University of New York at Buffalo.
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Three productids with most of their spines intact, showing that they looked like hedgehogs. I haven't identified them further largely because I can't see the shells properly. (Edit: likely to be Echinoconchus or similar echinoconchid - see below) These are from a Brigantian (Mississippian) mudstone in NE England, Co.Durham. 1) About 6cm across 2) Interior brachial valve showing spines projecting around the edge from behind. About 3cm across. 3) about 4cm across:
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Found as surface float on the scree pile at the Windom exposure. Originally assigned to Rhynchonella prolifica, currently assigned to Camarotoechia. Appears to have been assigned to several genera over time, including Stenocisma and Cupularostrum. Refs: Linsley, D. M. Devonian Paleontology of New York. (1994) Paleontological Research Institution Special Publication 21. Hall, J. Palaeontology of New York v. 4. (1867) Yale Peabody Museum Collections website (http://peabody.yale.edu/collections/invertebrate-paleontology)
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Found as surface float on the scree pile at the Windom exposure. Refs: Linsley, D. M. “Devonian Paleontology of New York” (1994). Paleontological Research Institution Special Publication No. 21. Hall, J. Palaeontology of New York v. 4. (1867) Yale Peabody Museum Collections website (http://peabody.yale.edu/collections/invertebrate-paleontology)
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Found as surface float on the scree pile at the Windom exposure. Possible undescribed species of genus Cyrtina. Closely resembles C. hamiltomensis, but surface is smooth and punctate, rather than covered in tiny spicules. Also differs in that extremities are slightly rounded, rather than squared, and height of interarea is equal to the width rather than smaller. References: Ehlers, G. M. Cyrtina Hamiltonensis (Hall) And A New Species Of This Brachiopod Genus From New York. Contributions From The Museum Of Paleontology The University Of Michigan Vol. XVIII, No. 12, pp. 197-204 (1963). Linsley, D. M. Devonian Paleontology of New York. (1994) Paleontological Research Institution Special Publication 21. Wilson, K. A. Field Guide to the Devonian Fossils of New York. (2014) Paleontological Research Institution Special Publication 44. Hall, J. Palaeontology of New York v. 4. (1867) Fossilworks. http://fossilworks.org Yale Peabody Museum Collections website (http://peabody.yale.edu/collections/invertebrate-paleontology)
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Found as surface float on the scree pile at the Kashong exposure. Originally assigned to Delthyris, reassigned to Spirifer, Acrospirifer, and Patriaspirifer. Alternate spellings: P. duodenaris, P. duodenaria, P. duodenarius. Does not appear in Fossilworks or Wilson’s “Field Guide to the Devonian Fossils of New York”. Classification information from Fossilworks entry for Patriaspirifer genus. Reference: Linsley, D. M. Devonian Paleontology of New York. (1994) Paleontological Research Institution Special Publication 21. Hall, J. Palaeontology of New York v. 4. (1867) Fossilworks. http://fossilworks.org Yale Peabody Museum Collections website (http://peabody.yale.edu/collections/invertebrate-paleontology)
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