. . . "Hemisyntrachelus"@en . . . "This genus is known in the fossil records from the Miocene to the Quaternary (age range: from 5.332 to 1.806 million years ago). Fossils are found in the marine strata of Italy, the Netherlands, Chile and Peru."@en . "This genus is known in the fossil records from the Miocene to the Quaternary (age range: from 5.332 to 1.806 million years ago). Fossils are found in the marine strata of Italy, the Netherlands, Chile and Peru."@en .