Definition of Orthonybyoceras. Meaning of Orthonybyoceras. Synonyms of Orthonybyoceras

- Isorthoceras Liulinoceras Mesnaquaceras Metephippiorthoceras Monomuchites Orthonybyoceras Paraproteoceras Proteoceras Pseudoliolinoceras Stereospyroceras Tofangoceras...
- †Oratoceras †Ordosoceras †Ormoceras †Orthoceras †Orthocycloceras †Orthonybyoceras †Osbornoceras †Ovoceras †Ovocerina †Oxfordoceras †Oxygonioceras †Oxynautilus...
- imprints showing it had 10 arms and a distantly related Treptoceas (Orthonybyoceras) from the Upper Ordovician near Cincinnati, Ohio were found with indications...
- found in modern squids, belemnites, and indicated for Upper Ordovician Orthonybyoceras and Silurian Michelinoceras. PaleoBiology Database: Rhabdiferoceras...
- †Orthonema salteri †Orthonema subtaeniatum †Orthonota †Orthonota undulata †Orthonybyoceras – tentative report †Orthonychia †Orthonychia chesterense – tentative...
- biforata †Orthis pyramidalis †Orthodesma †Orthodesma curvatum †Orthonybyoceras †Orthonybyoceras dyeri †Orthonychia †Orthonychia coni**** †Orthopleura †Orthostrophia...
- Formation  Estonia Orthonybyoceras isakari Sp. nov Valid Kröger & Aubrechtová Ordovician (Sandbian) Vasalemma Formation  Estonia Orthonybyoceras moisense Sp...
- for species †Orthis †Orthis testudinaria †Orthoceras †Orthodesma †Orthonybyoceras †Orthonychia †Orthonychia chesterense †Orthorhynchula †Orthorhynchula...