Isorthoceras Flower 1962
Fuente:
Zenodo
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Recurso digital |
| Veröffentlicht: |
Zenodo
2025
|
| Schlagworte: | |
| Online-Zugang: | |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| _version_ | 1866902313934782464 |
|---|---|
| author | Kröger, Björn |
| author_facet | Kröger, Björn |
| contents | <p><b>Genus <i>Isorthoceras</i> Flower, 1962</b></p><p><b>Type species</b></p><p><i>Orthoceras sociale</i> Hall in Miller, 1877, from Graf, Iowa, USA, Elgin Member, Maquoketa Formation, latest Katian; by original designation.</p><p><b>Diagnosis</b></p><p>Orthoconic longicones with subcircular cross section and subdued ornamentation, smooth or with fine transverse and / or longitudinal lirae; siphuncle subcentral, with barrel-shaped early segments and subcylindrical later segments; septal necks suborthochoanitic to cyrtochoanitic; endosiphuncular annuli grow forward and backward, joining those of adjacent segments to form continuous parietal lining of uniform thickness throughout segments; mural to episeptal cameral deposits. (Compiled from Flower 1962 and Frey 1995.)</p> |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_5281_zenodo_14988494 |
| institution | Zenodo |
| language | |
| publishDate | 2025 |
| publisher | Zenodo |
| record_format | zenodo |
| spellingShingle | Isorthoceras Flower 1962 Kröger, Björn Biodiversity Taxonomy Animalia Mollusca Cephalopoda Orthocerida Proteoceratidae Isorthoceras <p><b>Genus <i>Isorthoceras</i> Flower, 1962</b></p><p><b>Type species</b></p><p><i>Orthoceras sociale</i> Hall in Miller, 1877, from Graf, Iowa, USA, Elgin Member, Maquoketa Formation, latest Katian; by original designation.</p><p><b>Diagnosis</b></p><p>Orthoconic longicones with subcircular cross section and subdued ornamentation, smooth or with fine transverse and / or longitudinal lirae; siphuncle subcentral, with barrel-shaped early segments and subcylindrical later segments; septal necks suborthochoanitic to cyrtochoanitic; endosiphuncular annuli grow forward and backward, joining those of adjacent segments to form continuous parietal lining of uniform thickness throughout segments; mural to episeptal cameral deposits. (Compiled from Flower 1962 and Frey 1995.)</p> |
| title | Isorthoceras Flower 1962 |
| topic | Biodiversity Taxonomy Animalia Mollusca Cephalopoda Orthocerida Proteoceratidae Isorthoceras |
| url | https://doi.org/10.5281/zenodo.14988494 |