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Found 11 results

  1. ChasingGhostsYT

    Trilobites of the Lower Cambrian

    After scouting some Kinzers spots with @Dean Ruocco , we found ourselves in rock with some beautiful Cambrian bugs. Not nearly all…but some highlights in order 1. Olenllous Getzi (Cephalon) 2. Olenllous Sp. (full bug) 3. Wanneria Walcottana (Thorax/pygdium)
  2. Kurufossils

    Mystery Huge Anomalocaris Appendange?

    Hi, I have this mystery piece of what appears to be anomalocarid appendage of sorts. The problem is I did not receive any information with it and it came out of an old collection from Maine, Usa. I'm not to sure what else it could be from the appearance but I am also very uncertain of the exact species. The piece of a very laminated sparkly shale If I had to guess it could've came from either Burgess Shale, Utah, or Nevada but I not sure what locality it could be from so if anyone if familiar with these shales and can tell from the preservation it would be a huge help, thank you and looking forward to seeing peoples opinions, and if anyone can recommend an expert to show that would also help.
  3. A family of amateur fossil hunters from Utah -- the Gunthers -- found this fascinating fossil in the Spence Gulch shale part of Utah in 1992, and shared it with Richard Robison at the University of Kansas. The mystery of what it was went unsolved for nearly 30 years, until a team at Ohio State uncovered the telltale circle that showed the creature had attached to a shelly surface via a basal disc. It's the earliest/one of the earliest known specimens of a mat-sticker making the evolutionary move to attaching to a harder surface--a leap that makes some of our modern-day echinoderms, including sea cucumbers, possible. They recently published their findings in the Bulletin of Geosciences but this discovery wouldn't have been possible if the Gunthers hadn't found the fossil in the first place. Just fascinating stuff. (story here: https://news.osu.edu/scientists-discover-evolutionary-link-to-modern-day-sea-echinoderms/),
  4. From the album: MY FOSSIL Collection - Dpaul7

    Piochaspis sellata Trilobite Chisolm Shale, Pioche, Nevada Cambrian Period ( 541 (+/- 1) - 485.4 (+/- 1.9) million years ago) This fossil measures 1/2" long and is on a matrix measuring 1" by 5/8". Ptychopariida is a large, heterogeneous order of trilobite containing some of the most primitive species known. The earliest species occurred in the second half of the Lower Cambrian, and the last species did not survive the Ordovician–Silurian extinction event. Trilobites have facial sutures that run along the margin of the glabella and/or fixigena to the shoulder point where the cephalon meets the thorax. These sutures outline the cranidium, or the main, central part of the head that does not include the librigena (free cheeks). The eyes are medial along the glabella on the suture line (however, some species have no eyes). The fossils of the moults of trilobites can often be told from the fossils of the actual animals by whether the librigena are present. (The librigena, or cheek spines, detach during moulting.) In ptychopariids, short bladelike genal spines are often present on the tips of the librigena. The thorax is large and is typically made up of eight or more segments. The thorax is usually much longer than the pygidium, which is usually small. In some species the pygidium is outlined with a flat border. The Subclass Librostoma was recently erected to encompass several related orders, including Ptychopariida, Asaphida, Proetida, Harpetida, and possibly Phacopida. These are now known as the "Librostome Orders". Trilobites of the orders Proetida, Harpetida, and of the family Damesellidae were originally placed in Ptychopariida. Kingdom: Animalia Phylum: Arthropoda Class: †Trilobita Order: †Ptychopariida Family: †Ptychopariidae Genus: †Piochaspis Species: †sellata
  5. From the album: MY FOSSIL Collection - Dpaul7

    Piochaspis sellata Trilobite Chisolm Shale, Pioche, Nevada Cambrian Period ( 541 (+/- 1) - 485.4 (+/- 1.9) million years ago) This fossil measures 1/2" long and is on a matrix measuring 1" by 5/8". Ptychopariida is a large, heterogeneous order of trilobite containing some of the most primitive species known. The earliest species occurred in the second half of the Lower Cambrian, and the last species did not survive the Ordovician–Silurian extinction event. Trilobites have facial sutures that run along the margin of the glabella and/or fixigena to the shoulder point where the cephalon meets the thorax. These sutures outline the cranidium, or the main, central part of the head that does not include the librigena (free cheeks). The eyes are medial along the glabella on the suture line (however, some species have no eyes). The fossils of the moults of trilobites can often be told from the fossils of the actual animals by whether the librigena are present. (The librigena, or cheek spines, detach during moulting.) In ptychopariids, short bladelike genal spines are often present on the tips of the librigena. The thorax is large and is typically made up of eight or more segments. The thorax is usually much longer than the pygidium, which is usually small. In some species the pygidium is outlined with a flat border. The Subclass Librostoma was recently erected to encompass several related orders, including Ptychopariida, Asaphida, Proetida, Harpetida, and possibly Phacopida. These are now known as the "Librostome Orders". Trilobites of the orders Proetida, Harpetida, and of the family Damesellidae were originally placed in Ptychopariida. Kingdom: Animalia Phylum: Arthropoda Class: †Trilobita Order: †Ptychopariida Family: †Ptychopariidae Genus: †Piochaspis Species: †sellata
  6. Dpaul7

    DIPLOMYSTUS DENTATUS 1.jpg

    From the album: MY FOSSIL Collection - Dpaul7

    Hypagnostus parvifrons Trilobite House Range, Marjum formation of central Utah Cambrian Period (570-540 million years ago) Trilobites of the order Agnostida are mmall trilobites (usually only a few mm long) with cephalon and pygidium strongly similar in outline and size (isopygous); enrollment typical. Cephalon: cephalic shield with deeply parabolic outline, maximum width usually anterior of genal angle, sutures proparian or lacking; border convex; glabella fusiform, widest at base (except in Condylopygidae), glabellar segmentation highly variable, sometimes complex, but in some species entirely effaced; most species eyeless; hypostome natant, specialized with ribbon-like wings; rostral plate lacking (or uncalcified). Thorax: segments 2 (Agnostina) or 3 (some Eodiscina), axis typically broad, short fulcrate pleurae. Pygidium: strongly isopygous; pygidial margin typically closely matching cephalic margin. Occurrence: L. Cambrian to U. Ordovician (Ashgill). Kingdom: Animalia Pylum: Arthropoda Class: †Trilobita Order: †Agnostida Family: †Spinagnostidae Genus: †Hypagnostus Species: †parvifrons
  7. Dpaul7

    Trilobite Hypagnostus Parvifrons

    From the album: MY FOSSIL Collection - Dpaul7

    Hypagnostus parvifrons Trilobite House Range, Marjum formation of central Utah Cambrian Period (570-540 million years ago) Trilobites of the order Agnostida are mmall trilobites (usually only a few mm long) with cephalon and pygidium strongly similar in outline and size (isopygous); enrollment typical. Cephalon: cephalic shield with deeply parabolic outline, maximum width usually anterior of genal angle, sutures proparian or lacking; border convex; glabella fusiform, widest at base (except in Condylopygidae), glabellar segmentation highly variable, sometimes complex, but in some species entirely effaced; most species eyeless; hypostome natant, specialized with ribbon-like wings; rostral plate lacking (or uncalcified). Thorax: segments 2 (Agnostina) or 3 (some Eodiscina), axis typically broad, short fulcrate pleurae. Pygidium: strongly isopygous; pygidial margin typically closely matching cephalic margin. Occurrence: L. Cambrian to U. Ordovician (Ashgill). Kingdom: Animalia Pylum: Arthropoda Class: †Trilobita Order: †Agnostida Family: †Spinagnostidae Genus: †Hypagnostus Species: †parvifrons
  8. From the album: MY FOSSIL Collection - Dpaul7

    Brachyaspidion microps Trilobite Wheeler formation of central Utah Cambrian Period (~507 Million Years Ago) Ptychopariida is a large, heterogeneous order of trilobite containing some of the most primitive species known. The earliest species occurred in the second half of the Lower Cambrian, and the last species did not survive the Ordovician–Silurian extinction event. Trilobites have facial sutures that run along the margin of the glabella and/or fixigena to the shoulder point where the cephalon meets the thorax. These sutures outline the cranidium, or the main, central part of the head that does not include the librigena (free cheeks). The eyes are medial along the glabella on the suture line (however, some species have no eyes). The fossils of the moults of trilobites can often be told from the fossils of the actual animals by whether the librigena are present. (The librigena, or cheek spines, detach during moulting.) In ptychopariids, short bladelike genal spines are often present on the tips of the librigena. The thorax is large and is typically made up of eight or more segments. The thorax is usually much longer than the pygidium, which is usually small. In some species the pygidium is outlined with a flat border. The Subclass Librostoma was recently erected to encompass several related orders, including Ptychopariida, Asaphida, Proetida, Harpetida, and possibly Phacopida. These are now known as the "Librostome Orders". Trilobites of the orders Proetida, Harpetida, and of the family Damesellidae were originally placed in Ptychopariida. Kingdom: Animalia Pylum: Arthropoda Class: †Trilobita Order: †Ptychopariida Family: †Kingstoniidae Genus: †Brachyaspidion Species: †microps
  9. Dpaul7

    Ogygopis sp. Trilobite

    From the album: MY FOSSIL Collection - Dpaul7

    Ogygopis sp. Trilobite Harkless, Nevada, USA Cambrian Period (541 - 485.4 million years ago) Ogygopsis is a genus of trilobite from the Cambrian of Antarctica and North America, specifically the Burgess Shale. It is the most common fossil in the Mt. Stephen fossil beds there, but rare in other Cambrian faunas. Its major characteristics are a prominent glabella with eye ridges, lack of pleural spines, a large spineless pygidium about as long as the thorax or cephalon, and its length: up to 12 cm. Kingdom: Animalia Phylum: Arthropoda Class: †Trilobita Order: †Corynexochida Family: †Dorypygidae Genus: †Ogygopsis
  10. Dpaul7

    Ogygopis sp. Trilobite

    From the album: MY FOSSIL Collection - Dpaul7

    Ogygopis sp. Trilobite Harkless, Nevada, USA Cambrian Period (541 - 485.4 million years ago) Ogygopsis is a genus of trilobite from the Cambrian of Antarctica and North America, specifically the Burgess Shale. It is the most common fossil in the Mt. Stephen fossil beds there, but rare in other Cambrian faunas. Its major characteristics are a prominent glabella with eye ridges, lack of pleural spines, a large spineless pygidium about as long as the thorax or cephalon, and its length: up to 12 cm. Kingdom: Animalia Phylum: Arthropoda Class: †Trilobita Order: †Corynexochida Family: †Dorypygidae Genus: †Ogygopsis
  11. Dpaul7

    Ogygopis sp. Trilobite

    From the album: MY FOSSIL Collection - Dpaul7

    Ogygopis sp. Trilobite Harkless, Nevada, USA Cambrian Period (541 - 485.4 million years ago) Ogygopsis is a genus of trilobite from the Cambrian of Antarctica and North America, specifically the Burgess Shale. It is the most common fossil in the Mt. Stephen fossil beds there, but rare in other Cambrian faunas. Its major characteristics are a prominent glabella with eye ridges, lack of pleural spines, a large spineless pygidium about as long as the thorax or cephalon, and its length: up to 12 cm. Kingdom: Animalia Phylum: Arthropoda Class: †Trilobita Order: †Corynexochida Family: †Dorypygidae Genus: †Ogygopsis
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