''Bogoslovskya'' is an extinct orthoceroid

cephalopod A cephalopod is any member of the molluscan class Cephalopoda (Greek plural , ; "head-feet") such as a squid, octopus, cuttlefish, or nautilus. These exclusively marine animals are characterized by bilateral body symmetry, a prominent head ...

genus that lived in what is now Asia (Urals and Japan) from the

Devonian The Devonian ( ) is a geologic period and system of the Paleozoic era, spanning 60.3 million years from the end of the Silurian, million years ago (Mya), to the beginning of the Carboniferous, Mya. It is named after Devon, England, whe ...

to the Permian.

Taxonomy

''Bogoslovskya'' was named by

Zhuravleva Zhuravleva is a romanisation of a Cyrillic surname. Notable people who have had their name transliterated to be this include: * Anastasiya Juravleva (born 1981), Uzbekistani jumper athlete * Lyudmila Zhuravleva Lyudmila Vasilyevna Zhuravleva (r ...

(1978) which at that time included 5 species from the Devonian of the Ural Mountains. Since then three more species have been described from the Carboniferous and Permian of Japan. Bogoslovskya was originally assigned to the subfamily Michelinoceratinae within the Orthocerida, wherein it was listed by Sepkoski (2002)J. J. Sepkoski. 2002. A compendium of fossil marine animal genera. Bulletins of American Paleontology 363:1-560 and reassigned to the Palliocerida by Zhuravleva (2005) and placed in the newly established Bogoslovskyidae.

Morphology

''Bogoslovskya'' has an orthoconic shell with an empty eccentric

siphuncle The siphuncle is a strand of tissue passing longitudinally through the shell of a cephalopod mollusk. Only cephalopods with chambered shells have siphuncles, such as the extinct ammonites and belemnites, and the living nautiluses, cuttlefish, and ...

of which there are only very thin and narrow

septal necks In biology, a septum (Latin for ''something that encloses''; plural septa) is a wall, dividing a cavity or structure into smaller ones. A cavity or structure divided in this way may be referred to as septate. Examples Human anatomy * Interatri ...

that are thickened at the edge but with no evidence of connecting rings. Species from the Devonian of the Urals have smooth shells; later forms from Japan possess transverse ornamentation in the form of lirae or thin riblets.

References

{{Taxonbar, from=Q4937739 Cephalopod genera Devonian cephalopods Paleozoic animals of Asia Devonian first appearances Permian genus extinctions