Английская Википедия:Echioceratidae

Материал из Онлайн справочника
Версия от 18:22, 1 марта 2024; EducationBot (обсуждение | вклад) (Новая страница: «{{Английская Википедия/Панель перехода}} {{Short description|Extinct family of ammonites}} {{Automatic taxobox | fossil_range = Sinemurian, {{fossil range|196.5| 189.6 }}<ref name=Howarth2013/> | image = Echioceratidae - Echioceras raricostatum.JPG | image_caption = Fossil shells of ''Echioceras raricostatum'' from Pierreclos (France), on display at Galerie de paléontologie et d'anatomie comparée in Paris | disp...»)
(разн.) ← Предыдущая версия | Текущая версия (разн.) | Следующая версия → (разн.)
Перейти к навигацииПерейти к поиску

Шаблон:Short description Шаблон:Automatic taxobox

Echioceratidae is an extinct family of ammonites that lived during Sinemurian stage of Early Jurassic.[1]

Description

Ammonites belonging to this family are characterised by serpenticone shells with a keel, which can be surrounded by grooves if a species is densely ribbed and compressed. The whorl section is either circular or has flat sides. Ribs are simple and strong with the exception of Leptechioceras which instead possessed a strongly compressed, smooth outer whorl. The initial ontogenical stage of these ammonites is typically smooth but very short. Tubercules are represented in a few genera within this group. [1]

Genera and subgenera

Following genera are members of this family:[1]

Distribution

Fossils of species within this family have been found in the Jurassic rocks of north Africa, South and North America, Europe and Asia.[2][1]

References

Шаблон:Reflist

Шаблон:Portal Шаблон:Taxonbar


Шаблон:Ammonitina-stub

Партнерские ресурсы
Криптовалюты
Магазины
Хостинг
Разное

  1. ↑ 1,0 1,1 1,2 1,3 M. K. Howarth 2013. Treatise on Invertebrate Paleontology, Part L, Revised, Volume 3B, Chapter 4: Psiloceratoidea, Eoderoceratoidea, Hildoceratoidea.
  2. ↑ The Paleobiology Database
Источник — http://wikihandbk.com/ruwiki/index.php?title=Английская_Википедия:Echioceratidae&oldid=14440784