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  1. Yesterday
  2. Haravex

    Avisaurus Tooth

    Super rare tooth congratulations on your find.
  3. Last week
  4. DPS Ammonite

    Diplocynodon sp.

    Thomas, you are setting the standard for quality, well researched and documented entries. Thank you.
  5. Troodon

    Avisaurus Tooth

    Beautiful crown with a nice root element
  6. oilshale

    Avisaurus Tooth

    Gorgeous tooth - love it.
  7. oilshale

    Diplocynodon sp.

    Prepared with transfer method; the preserved skull length is about 15 cm. Taxonomy according to GBIF. Two Diplocynodon species are known from the Miocene so far: Diplocynodon ratelii Pomel, 1847 (type species) from the early Miocene of France and Diplocynodon ungeri (Prangner, 1845), from the middle Miocene of Austria and France. According to a communication from M. Gross, this is probably Diplocynodon ungeri. Diagnosis for Diplocynodon (Martin & Gross, 2011): “enlarged fourth and fifth maxillary alveoli of roughly identical diameter; confluent third and fourth dentary alveo
  8. ThePhysicist

    Avisaurus Tooth

    Thank you! It's quite a beast of a tooth I suppose .
  9. Synonym: Pleurocystites robustus Billings, 1854. Alternative spelling: Pleurocystis. Taxonomy from fossilworks.org. Diagnosis (Sprinkle et al., 1985): “Theca rounded-triangular, nearly symmetrical; 3 rhombs elliptical, dichopores occupying less than 40% of sutures; periproct occupying 70% of lower side, about 680-700 periproctals, no rectal lobe, anal pyramid away from margin; ornament composed of medium growth lines and few ridges radiating to the plate sides and corners; brachioles having large groove extending up aboral side, cover plates fairly large; proximal stem slowly ta
  10. Auspex

    Avisaurus Tooth

    Very nice specimen! 4mm is quite large.
  11. ThePhysicist

    Avisaurus Tooth

    Identification: This tooth is triangular and thin, with significant basal constriction, a hallmark of bird teeth. Notes: This tooth has a feeding wear facet on the labial side, suggesting that it's from the left "dentary." Citation: BRETT-SURMAN, MICHAEL K. & PAUL, GREGORY S., 1985, A new family of bird-like dinosaurs linking Laurasia and Gondwanaland, Journal of Vertebrate Paleontology, Volume 5, Number 2, June, Pages 133-138, https://www.jstor.org/stable/i405987
  12. Earlier
  13. RJB

    Isurichthys cf. roumanus

    Cool fish. Amazes me how you aquier so many fish. Sorry for the bad spelling. RB
  14. The transcription of the Arab terms and names is often ambiguous. In the literature, the locality is called both Ain el Kerma and Ain Karma. Different spellings can also be found for Jebel Tselfat and Jbel Tselfat. Taxonomy from Encyclopedia of Life, EOL for short. Diagnosis according to Pictet and Humbert 1866, (translated from French by oilshale): Elongated head, ending in a long beak similar to that of Belone. Small skeleton, composed of numerous vertebrae. Short dorsal fin, a little behind the middle of the body and slightly behind the ventrals; pectoral fins that
  15. ThePhysicist

    Saurornitholestes

    Identification: Dromaeosaurs have differently-sized serrations on each carina, the ones on the distal carina being much larger and pronounced than the mesial ones. The mesial carina also has a classic twist. Notes: This tooth has feeding wear facets on both the labial and lingual sides of the tip. Citation: SUES, HANS-DIETER, 1978. A new small theropod dinosaur from the Judith River Formation (Campanian) of Alberta Canada, Zoological Journal of the Linnean Society, Volume 62, Issue 4, April, Pages 381–400, https://doi.org/10.1111/j.1096-3642.1978.tb01049.x
  16. oilshale

    Isurichthys cf. roumanus

    Identified by A. Bannikov, Borissiak Paleontological Institute, Russian Academy of Sciences. D i a g n o s i s after A. F. Bannikov (2012): "Body slightly elongated, its depth equal to, or greater than, head length. Head 0.34–0.29 of body length. Supraoccipital crest high. Jaw teeth small, uniserial. Vertebrae 28–31 in number, including 16–19 caudal vertebrae; parapophyses present on posterior abdominal vertebrae. Neural spines very slender. Ribs relatively long, absent on haemal spine of first caudal vertebra. Spinous part of dorsal fin with 8–12 spines, soft part with 15–18 widely s
  17. oilshale

    Todiltia schoewei (Dunkle, 1942)

    Alternative combination: Leptolepis schoewei. Taxonomy taken from NMNH Catalog Number USNM V 17903. DIAGNOSIS after Schaeffer & Patterson (1984): "Middle Jurassic teleostean fishes of leptolepid grade, but differing from similar fishes in having only chordacentra until late in growth. The chordacentra receive perichordal additions only in the midcaudal region, and only in the largest specimens. About 50 vertebrae, 30 abdominal. Dorsal fin in the middle of the back with about 16 rays; anal originates beneath posterior edge of dorsal, with about 14 rays; pelvics beneath dorsal o
  18. Fossildude19

    Eurolebias meridionalis (Gaudant, 1978)

    Amazing preservation on this one, Thomas! Beautiful!
  19. Alternative name: Prolebias meridionalis Gaudant, 1987 Diagnosis (after Costa, 2012): “Similar to other cyprinodontids by having: jaw dentition comprising single outer tooth row followed or not by few smaller teeth near symphyses; anterior and posterior portions of jaw suspensorium nearly parallel. Also similar to cyprinodontids by largest specimens being deep-bodied (body depth about 28–30 % standard length, vs. about 21 –26 % standard length in other Oligocene killifish taxa). It differs from all other cyprinodontids by having long, almost rectangular premaxillary ascending proce
  20. oilshale

    Illusionella tsurevica BAYKINA, 2012

    The transcription of the Russian terms and names is often ambiguous. In the literature the locality and the formation is called both Tsurevskii or Tsurevskiy. The Russian spelling is Цуревский. Diagnosis for Illusionella (after Baykina 2012, p. 304): "Skull narrow; bulla prootica 2– 2.5 times as large as bulla pterotica; frontals smooth; maxilla saber-shaped, with distinctly convex lower margin, terminating short of reaching vertical through orbital center; posterior supramaxilla in shape of irregular parallelogram; hypomaxilla absent; lower jaw projecting considerably anterior to upper j
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