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Crab claw (genus unknown) Formation: Grayson Marl Age: Cretaceous Dimensions: [to be added] Self-collected April 2020. Shark vertebra Formation: Ozan Formation Age: Cretaceous Dimensions: 4 cm (diameter) x 1 cm (thickness) Self-collected September 2019. A note on shark vertebra and fish vertebra: "The vertebral centra of sharks can be distinguished from the vertebrae of bony fish by a number of characteristics. Shark vertebral centra are generally disk-shaped with both faces concave. The surfaces are fine-grained and similar to porcelain in appearance. The circumferencial surfaces usually exhibit two pairs of holes where the neural and hemal arches are anchored. Fish vertebra, on the other hand, will show spiny processes where the neural and hemal arches and other bony projections were attached." Cretaceous turtle vertebra Genus/species: unknown Formation: Ozan Formation Age: Cretaceous Dimensions: 2.5 cm x 2.3 x 1.8 cm Self-collected in 2022. Genus/Species: Cymatoceras sp. Locality: Grayson Marl, Texas Age: Cretaceous Self-collected in 2019  Shark coprolite #FA001 Genus/Species: Unknown shark Locality: Ozan Formation, Texas Age: Cretaceous Dimensions: [to be added] Personally collected in June 2021.  Rudists are commonly mistaken for coral, but during the Cretaceous period these unusual looking bivalves were the dominant reef builders of the time. Genus/Species: Durania (genus) Locality: Ozan Formation, Texas Age: Cretaceous Dimensions: varies; details to be added later Personally collected between 2019-2021. Genus/Species: Belonostomus sp. (bony fish) Locality: Main Street Formation, Texas Age: Cretaceous Dimensions: [to be added] Self-collected in 2020.  Associated Cretaceous fish vertebrae.
After one successful hunt at this spot last year, I went back the next day to try my luck again. I only managed to come home with a couple of pieces but was very happy with this one. These vertebrae have been tentatively identified as belonging to Pachyrhizodus. To see the video from I discovered it, click here to go to my Instagram post. Genus/Species: Pachyrhizodus (tentative) Locality: Ozan Formation, Texas Age: Late Cretaceous Dimensions: [to be added] Self-collected June 2021. |
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