概要

Conodonts

Source: http://pubs.usgs.gov/circ/2004/1264/html/trip3/pl1.html

概要

[Conodonts from the Deer Valley and Loyalhanna Limestone Members of the Mauch Chunk Formation] FIGURES 1, 2. Conodonts from the Deer Valley Member of the Mauch Chunk Formation, Keystone quarry, Pa. This collection (93RS–79c) is from the lower 10 cm of the Deer Valley Member. Note the nonabraded, although slightly broken, conodont elements of the high-energy oolitic marine facies of the Deer Valley Member.

1. Kladognathus sp., Sa element, posterior view, X140.

2. Cavusgnathus unicornis, gamma morphotype, Pa element, lateral view, X140.

3–9. Conodonts from the uppermost Loyalhanna Limestone Member of the Mauch Chunk Formation, Keystone quarry, Pa. This collection (93RS–79b) is from the upper 10 cm of the Loyalhanna Member. Note the highly abraded and reworked aeolian forms.

3, 4. Kladognathus sp., Sa element, lateral views, X140.

5. Cavusgnathus unicornis, alpha morphotype, Pa element, lateral view, X140.

6, 7. Cavusgnathus sp., Pa element, lateral view, X140.

8. Polygnathus sp., Pa element, upper view, reworked Late Devonian to Early Mississippian morphotype, X140.

9. Gnathodus texanus?, Pa element, upper view, X140.

10–14. Conodonts from the basal 20 cm of the Loyalhanna Limestone Member of the Mauch Chunk Formation, Keystone quarry, Pa. (93RS–79a), and Westernport, Md. (93RS–67). Note the highly abraded and reworked aeolian forms.

10. Polygnathus sp., Pa element, upper view, reworked Late Devonian to Early Mississippian morphotype, 93RS–79a, X140.

11. Polygnathus sp., Pa element, upper view, reworked Late Devonian to Early Mississippian morphotype, 93RS–67, X140.

12. Gnathodus sp., Pa element, upper view, reworked Late Devonian(?) through Mississippian morphotype, 93RS–67, X140.

13. Kladognathus sp., M element, lateral views, 93RS–67, X140.

14. Cavusgnathus sp., Pa element, lateral view, 93RS–67, X140

ライセンス

この画像およびメディアは、アメリカ合衆国内務省の実務機関であるアメリカ地質調査所に属する者が職務上作成した著作物のみで構成されているため、アメリカ合衆国国内でパブリックドメインの状態にあります。詳細についてはUSGSの著作物に関する取扱い（英語）をご覧ください。 Bahasa Indonesia ∙ català ∙ čeština ∙ Deutsch ∙ eesti ∙ English ∙ español ∙ français ∙ galego ∙ italiano ∙ Nederlands ∙ português ∙ polski ∙ sicilianu ∙ suomi ∙ Tiếng Việt ∙ Türkçe ∙ български ∙ македонски ∙ русский ∙ മലയാളം ∙ 한국어 ∙ 日本語 ∙ 中文 ∙ 中文（简体） ∙ 中文（繁體） ∙ العربية ∙ فارسی ∙ +/−