| _version_ | 1866902314148691968 |
|---|---|
| author | Kröger, Björn |
| author_facet | Kröger, Björn |
| contents | <p><b>Discosorida</b> fam., gen. et sp. indet. D</p><p>Fig. 46E–F</p><p><b>Material examined</b></p><p>ESTONIA • 1 spec.; Sutlema old quarry; Kõrgessaare Formation, Vormsi Regional Stage; TUG 1827- 162.</p><p><b>Description</b></p><p>The specimen is a 50 mm long, fragment of a mature body chamber; it is slightly endogastrically curved with a circular conch cross section.At its base, the conch diameter is 40 mm. The suture, as reconstructed from the base of the body chamber, is straight and transverse with a distinct narrow saddle at the position of the siphuncle. The septal foramen is almost marginal with a width of 5 mm (RSH = 0.125). No traces of the outer shell are preserved.</p><p><b>Remarks</b></p><p>This relatively incomplete fragment of a mature body chamber (likely from a cyrtogomphoceratid) is documented herein, because it cannot be assigned to any of the known genera or species known from Estonia or from the literature. It differs from species of <i>Kiaeroceras</i> in being more strongly curved and in lacking the characteristic narrowly rounded prosiphuncular margin. It differs from species of <i>Strandoceras</i> in having a circular conch cross section.</p> |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_5281_zenodo_15150695 |
| institution | Zenodo |
| language | |
| publishDate | 2025 |
| publisher | Zenodo |
| record_format | zenodo |
| spellingShingle | Undetermined undetermined-D Flower 1950 Kröger, Björn Biodiversity Taxonomy Animalia Mollusca Cephalopoda Discosorida Undetermined Undetermined undetermined-D <p><b>Discosorida</b> fam., gen. et sp. indet. D</p><p>Fig. 46E–F</p><p><b>Material examined</b></p><p>ESTONIA • 1 spec.; Sutlema old quarry; Kõrgessaare Formation, Vormsi Regional Stage; TUG 1827- 162.</p><p><b>Description</b></p><p>The specimen is a 50 mm long, fragment of a mature body chamber; it is slightly endogastrically curved with a circular conch cross section.At its base, the conch diameter is 40 mm. The suture, as reconstructed from the base of the body chamber, is straight and transverse with a distinct narrow saddle at the position of the siphuncle. The septal foramen is almost marginal with a width of 5 mm (RSH = 0.125). No traces of the outer shell are preserved.</p><p><b>Remarks</b></p><p>This relatively incomplete fragment of a mature body chamber (likely from a cyrtogomphoceratid) is documented herein, because it cannot be assigned to any of the known genera or species known from Estonia or from the literature. It differs from species of <i>Kiaeroceras</i> in being more strongly curved and in lacking the characteristic narrowly rounded prosiphuncular margin. It differs from species of <i>Strandoceras</i> in having a circular conch cross section.</p> |
| title | Undetermined undetermined-D Flower 1950 |
| topic | Biodiversity Taxonomy Animalia Mollusca Cephalopoda Discosorida Undetermined Undetermined undetermined-D |
| url | https://doi.org/10.5281/zenodo.15150695 |