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  1. Not sure what this could be. I am pretty sure this is cambrian maxfield formation. Any guesses? (It might be possible that it is one of the other carboniferous limestones that lay above, but those usually look different and have different fossils)
  2. Nautiloid

    Cedaria minor

    From the album: Nautiloid’s Trilobite Collection

    This cute little bug is from the Middle Cambrian Weeks Formation of Millard County, Utah. Purchased from a good friend.

    © Owen Yonkin 2022

  3. Nautiloid

    Labiostria westropi

    From the album: Nautiloid’s Trilobite Collection

    This bug comes from the Upper Ordovician McKay Group of British Columbia, Canada. The abundant and well preserved trilobite fauna of the McKay group represents a deep water biofacies known as the Wujiajiania biofacies. Most McKay group trilobites are collected from a narrow interval of richly fossiliferous strata.

    © Owen Yonkin 2022

  4. Nautiloid

    Small McKay Group bug

    From the album: Nautiloid’s Trilobite Collection

    This is most likely a species in the genus Orygmaspis. From the Upper Cambrian McKay Group of Cranbrook, British Columbia. Acquired from an old collection.

    © Owen Yonkin 2022

  5. Cspell

    Wheeler shale mystery

    Came across this cracking some shale...any help in id'ing it would be much appreciated!
  6. Possible synonyms Protopriapulites haikouensis Hou, Bergström, Wang, Feng & Chen, 1999. The correct name is Sicyophorus rara and not as often found Sicyophorus rarus. Description from Hou et al. 2017, p 124: "This is a relatively common priapulid‐like worm, known from over a thousand specimens. In many cases the material consists of compressed, complete individuals, and the posterior half of the body is often better preserved with an apparently rigid outline. Detailed structures can be detected by subtle differences in color and relief. The size of the animal is generally about 1cm
  7. Mochaccino

    Anomalocaris from Yunnan?

    Hello, I just got this supposed Anomalocaris fossil from Yunnan of China, Cambrian in age. It's about 1.5cm length, and I belive a section from the end of an appendage. I was wondering if someone could determine a more specific species ID for it? Hopefully my phone's camera is enough to show the details. The specimen has quite clear preservation of the ventral spines, as well as their auxiliary spines coming off the front and back, and based on that I am thinking something like Anomalocaris kunmingensis (https://www.researchgate.net/figure/Anomalocaris-kunmingensis-sp-nov-from-the-
  8. From the very moment we wrapped up at that Conasauga Formation fossil hunt at the spot I'd never heard of before, I was itching to get back there. I guess that's what going for years without hunting half-billion year old bugs does to you. Well, this past Sunday I had my opportunity to get another bug hunt in. It's a good thing I brought my water boots with me, because the spot was quite a bit wetter than the previous time I had come, with some really large puddles at the foot of the hillside I'd get to work in. After a good while of splitting, I had myself
  9. Huntonia

    Wheeler Shale Unknown

    Hey guys, I found this last month in the Wheeler Shale in Utah, and I'm at a total loss as to what it is. I showed it to a friend who collects there regularly and he wasn't sure what it is either. He suggested it might be a carpoid or something similar. It's ever so slightly raised on the matrix. Does anyone recognize it? Scale in inches:
  10. Hi there - over the weekend I stumbled upon an area where some of the Cambrian aged Argillite from the old Hayward Creek Quarry in Braintree , Massachusetts was supposedly dumped. I found little bits of fossils which was promising, but I split one rock which had a larger mystery object in it. Does anyone have any idea what this could be? It kind of looks like part of a trilobite cephalon/glabella with what could be an eye. But that could be my eyes playing tricks on me with hopes of finding remnants of the famous, now elusive Braintree trilobites (in particular paradoxides harlini). It doesn't
  11. Marco90

    Itagnostus interstrictus

    From the album: My collection in progress

    Itagnostus interstrictus White 1874 Location: Wheeler Formation, Utah, USA Age: 507 Mya (Wuliuan, Middle Cambrian) Measurements: 5x5x4,5 cm (matrix), 6x3 mm(trilobite) Kingdom: Animalia Phylum: Arthropoda Subphylum: Trilobitomorpha Class: Trilobita Order: Agnostida Suborder: Agnostina Family: Peronopsidae
  12. Marco90

    Elrathia kingii

    From the album: My collection in progress

    Elrathia kingii Meek 1870 Location: Wheeler Formation, Utah, USA Age: 507 Mya (Wuliuan, Middle Cambrian) Measurements: 3x2 cm Kingdom: Animalia Phylum: Arthropoda Subphylum: Trilobitomorpha Class: Trilobita Order: Ptychopariida Suborder: Ptychopariina Family: Alokistocaridae
  13. Marco90

    My trilobite collection

    Not just teeth and shells: my fossil collection also includes trilobites, the real protagonists of the Palaeozoic era. The first is a beautiful specimen of Morocops ovatus. Detail of the cephalon area:
  14. Dean Ruocco

    Olenellus

    From the album: Pennsylvania trilobites

    Olenellus Kinzers Fromation
  15. Dean Ruocco

    Olenellus

    From the album: Pennsylvania trilobites

    Olenellus Kinzers Fromation
  16. Dean Ruocco

    Olenellus

    From the album: Pennsylvania trilobites

    Olenellus Kinzers Fromation
  17. Dean Ruocco

    Olenellus

    From the album: Pennsylvania trilobites

    Olenellus Kinzers Fromation
  18. Dean Ruocco

    Olenellus

    From the album: Pennsylvania trilobites

    Olenellus Kinzers Fromation
  19. Dean Ruocco

    Partial Olenellus

    From the album: Pennsylvania trilobites

    Olenellus Kinzers Formation
  20. Dean Ruocco

    Olenellus

    From the album: Pennsylvania trilobites

    Olenellus Kinzers Fromation
  21. Dean Ruocco

    Olenellus sp.

    From the album: Pennsylvania trilobites

    Olenellus sp. Kinzers formation Pennsylvania
  22. Dean Ruocco

    Olenellus sp. Kinzers formation

    From the album: Pennsylvania trilobites

    Olenellus sp. Kinzers formation Pennsyvania
  23. The only information that I have on this one is that it's from Morocco, Middle Cambrian and Cambropallas. The piece is ~10.5" x 8. I only have the one picture, but might be able to get more if needed. As always, thanks!
  24. Alternative combination: Alalcomenaeus illecebrosus. Taxonomy from Liu Yu et al. 2007. Diagnosis for Leanchoilia illecebrosa Hou 1987 from Liu Yu et al. 2007, p. 264: "A species of Leanchoilia with rami of ʻgreat appendageʼ with poorly visible distinction between shaft and filament, and with a single hook on the outermost ramus. Body comparatively slim. Rostrum pointed anteriorly, not extended into a snout. Tail piece dagger-shaped." Line drawing from Liu Yu et al. p. 265: References: Hou Xian-Guang (1987) Two new arthropods from Lower Cambrian, Chengjiang, easte
  25. Hardly anybody ever talks about the Cambrian fossils of the southern midcontinent (USA). They're super-underappreciated. Show us what you've got! Here's one to start us off: Thorax and pygidium of a trilobite, possibly Orygmaspis, typically referred to as "Orygmaspis cf. Orygmaspis llanoensis" but probably a different species altogether. Note the two pairs of macropleural spines marking the final thoracic segments. Davis Formation (late Cambrian: Furongian), south side of Highway 8, St. François County, Missouri.
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