ammonit.ru Палеонтологическия, Paleontology
Логин
Пароль

Регистрация

Забыли пароль?

 | Палеонтология, палеонтологический портал "Аммонит.ру" |   English version of paleontological portal Ammonit.ru |  Места находок | Геохронологическая шкала | Типы окаменелостей |

 | Виртуальный палеонтологический музей | Публикации | Новости палеонтологии | Пользователи  | Палеонтологические тэги |  

Microconchs

Microconchs is a paleobiological term introduced by J.Callomon. This term denotes ammonites which reached maturity at a relatively small size. Microconchs also have other distinctive features: adult aperture modifications on the final apertural edge, such as lappets or long ventral rostra and a rough sculpture on the terminal body chamber. Most paleontologists believe that microconchs are shells of male ammonites, whereas macroconchs are female shells. The same type of sexual dimorphism with small-sized males and large-sized females is present in modern octopods which belong to Argonautidae family. At the same time the smallest macroconchs are often smaller than the largest microconchs (probably due to the fact that the fast-growing cephalopods reach maturity at different sizes, depending on the ambient temperature).

The text was added by: Alex

Самые популярные фотографии, связанные с этим ключевым словом: / Most popular photos related with this paleontological keyword:

Радуга Sutneria.(Аммонит 115) Anaplanulites submutatus (Nikitin) Sutneria eumela Novocadoceras suraense Sasonov, 1965 Deshayesites три в одном Anaplanulites difficilis Buckman

Смотреть все фото по этому тэгу >>> // See all photos with this keyword >>>

С ключевым словом "Microconchs" связаны:

Following items are related with the keyword
"Microconchs":

191 фотография

10 публикаций

Ключевые слова, связанные со словом "Microconchs":
Keywords, related with "Microconchs":

A: Ammonites

L: lappets

M: Macroconchs | Miniconchs

V: ventral rostrum

А: аммониты

В: вентральный ростр

М: микроконхи | миниконхи

У: ушки

Постоянный адрес тэга:
Permanent link:

HTML-ссылка на тэг:
HTML-link to this page: