Asaphus kowalewskii is one of the 35 species of the genusAsaphus (sometimes called Neoasaphus). Fossils of this species are popular among collectors because of their prominent stalked eyes, many an inch or more in length. Trilobite picture taken by myself (DanielCD). ... Scientific classification or biological classification is how biologists group and categorize extinct and living species of organisms. ... Phyla Porifera (sponges) Ctenophora (comb jellies) Cnidaria Placozoa Subregnum Bilateria Acoelomorpha Orthonectida Rhombozoa Myxozoa Superphylum Deuterostomia Chordata (vertebrates, etc. ... Subphyla and Classes Subphylum Trilobitomorpha Trilobita - Trilobites (extinct) Subphylum Chelicerata Arachnida - Spiders, Scorpions, etc. ... Orders Agnostida Redlichiida Corynexochida Lichida Nektaspida? Phacopida Proetida Asaphida Harpetida Ptychopariida Trilobites are extinct arthropods in the class Trilobita. ... Superfamilies Anomocaroidea Asaphoidea Dikelokephaloidea Remopleuridoidea Cyclopygoidea Trinucleioidea Asaphida is a large, morphologically diverse order of trilobites that are found in strata dated from the Middle Cambrian boundary to the Upper Ordovician. ... In biology, binomial nomenclature is a standard convention used for naming species. ... See genus (mathematics) for the use of the term in mathematics. ... A fossil Ammonite Fossils are the mineralized remains of animals or plants or other traces such as footprints. ...
During the Ordovician period, several species of the genus Asaphus developed remarkable adaptations to changes in turbidity, with Asaphus kowalewskii presumably arising in a time of increased turbidity. The trilobite may have lain in wait buried in a benthic layer of loose debris or sediment with only its periscope eyestalks protruding above, looking out for danger or prey. The Ordovician period is the second of the six (seven in North America) periods of the Paleozoic era. ...
Most of the fossils of this species are found in the middle Ordovician deposits of the Wolchow River region near Saint Petersburg, Russia. Saint Petersburg (Russian: Санкт-Петербу́рг, English transliteration: Sankt-Peterburg), colloquially known as Питер (transliterated Piter), formerly known as Leningrad (Ленингра́д, 1924–1991) and Petrograd (Петрогра́д, 1914–1924), is a city located in Northwestern Russia on the delta of the river Neva at the east end of the Gulf of Finland...
References
N. Lawrow (1856). Verhandlungen der Kaiserlichen mineralogischen Gesellschaft zu St. Petersburg Jahr 1855–1856.
Some of the information in this article was taken from the website A Guide to the Orders of Trilobites by Sam Gon III.
Description: Coming from the Middle Ordovician Asery Level deposits of the Wolchow River region near Saint Petersburg, Russia, this is a large example of the trilobite Asaphuskowalewskii.
The genusAsaphus underwent some remarkable adaptations to changes in turbidity during the Ordovician, with this one presumably arising in a time of increased turbidity.
One thought is that the trilobite may have lain in wait for prey buried in the bottom sediment with only its dramatic 28 mm periscope eyestalks protruding.
Asaphuskowalewskii is one of the 35 species of trilobite of the genusAsaphus (sometimes called Neoasaphus).
Fossils of this species are popular among collectors because of their prominent stalked eyes, many an inch or more in length.
During the Ordovician period, several species of the genusAsaphus developed remarkable adaptations to changes in turbidity, with Asaphuskowalewskii presumably arising in a time of increased turbidity.
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