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Fossilized shell of the Silurian-Permian sea snail Euomphalus †Euomphalus †Euomphalus brooksensis †Euomphalus bundtzeni †Euomphalus planodorsatus – or unidentified related form †Euomphalus planorbis †Euomphalus utahensis – or unidentified related form †Favosites †Favosites emmonsi – or unidentified comparable form
The moon snail envelops the prey and then bores a hole through the shell using its radula and an acid secretion. Once the shell is bored open, the proboscis is used to consume the flesh of the prey. The hole in the shell, which has a " countersunk " appearance with chamfered edges, and which varies in size according to the species, is a ...
Later, during the American Civil War, Confederate miners looking for coal to help power their war efforts uncovered many fossils from the 210-million-year-old Late Triassic Pekin Formation. [3] Around 1869 North Carolina's first known dinosaur fossils were discovered by Washington Caruthers Kerr in a Sampson County marl pit belonging to James ...
Physa fontinalis (Linnaeus, 1758) – Fountain bladder snail – type species † Physa fuxinensis X.-H. Yu, 1987 † Physa galei Russell, 1926 † Physa galloprovincialis Matheron, 1843 † Physa gaoyouensis W. Yü, 1977 † Physa gardanensis Matheron, 1843 † Physa globosa Yen, 1954 † Physa gracilis Nicolas, 1891; Physa hankensis ...
One variety of "Turritella agate", that from the Green River Formation in Wyoming, is a fossiliferous rock which does indeed contain numerous high-spired snail shells. However, contrary to the common name, these snails are not in the marine genus Turritella , instead they are freshwater snails in the species Elimia tenera , family Pleuroceridae ...
Pleurotomariidae, common name the "slit snails", is a family of large marine gastropods in the superfamily Pleurotomarioidea of the subclass Vetigastropoda. [1] This family is a very ancient lineage; there were numerous species in the geological past.
The trackway Protichnites from the Cambrian, Blackberry Hill, central Wisconsin. A trace fossil, also known as an ichnofossil (/ ˈ ɪ k n oʊ f ɒ s ɪ l /; from Greek: ἴχνος ikhnos "trace, track"), is a fossil record of biological activity by lifeforms but not the preserved remains of the organism itself. [1]
The genus Vermetus is very ancient: it occurs in the fossil record from the Jurassic to the Quaternary (age range: from 164.7 to 0.0 million years ago). [ 2 ] Species