Ancyloceratina
The Ancyloceratina were a diverse suborder of ammonite most closely related to the ammonites of order Lytoceratina. They evolved during the Late Jurassic but were not very common until the Cretaceous period, when they rapidly diversified and become one of the most distinctive components of Cretaceous marine faunas. They have been recorded from every continent and many are used as zonal or index fossils. The most distinctive feature of the majority of the Ancyloceratina is the tendency for most of them to have shells that are not regular spirals like most other ammonites. These irregularly-coiled ammonites are called heteromorph ammonites, in contrast to regularly coiled ammonites, which are called homomorph ammonites.
primaryTopic
Ancyloceratina
The Ancyloceratina were a diverse suborder of ammonite most closely related to the ammonites of order Lytoceratina. They evolved during the Late Jurassic but were not very common until the Cretaceous period, when they rapidly diversified and become one of the most distinctive components of Cretaceous marine faunas. They have been recorded from every continent and many are used as zonal or index fossils. The most distinctive feature of the majority of the Ancyloceratina is the tendency for most of them to have shells that are not regular spirals like most other ammonites. These irregularly-coiled ammonites are called heteromorph ammonites, in contrast to regularly coiled ammonites, which are called homomorph ammonites.
has abstract
Ancyloceratina - podrząd głowonogów z podgromady amonitów.
@pl
Gli Ancyloceratina sono un sot ...... ario, alla base del Paleocene.
@it
The Ancyloceratina were a dive ...... ably lived at depths 36-183 m.
@en
勾菊石亞目(學名Ancyloceratina)是一類多樣化的 ...... 指準化石。大部份勾菊石亞目的殼都不是螺旋狀,故屬於異形菊石。
@zh
class
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Link from a Wikipage to an external page
Wikipage page ID
Wikipage revision ID
677,013,015
fossil range
Jurassic - Cretaceous
image caption
A reconstruction of a heteromorph ammonite, Hamites sp
image width
subdivision
* Ancylocerataceae
* Douvilleicerataceae
* Turrilitaceae
* Deshayesitaceae
* Scaphitaceae
subdivision ranks
subordo
Ancyloceratina
subordo authority
Wiedmann, 1966
hypernym
comment
Ancyloceratina - podrząd głowonogów z podgromady amonitów.
@pl
Gli Ancyloceratina sono un sot ...... to o parzialmente sovrapposti.
@it
The Ancyloceratina were a dive ...... re called homomorph ammonites.
@en
勾菊石亞目(學名Ancyloceratina)是一類多樣化的 ...... 指準化石。大部份勾菊石亞目的殼都不是螺旋狀,故屬於異形菊石。
@zh
label
Ancyloceratina
@en
Ancyloceratina
@it
Ancyloceratina
@pl
勾菊石亞目
@zh
wasDerivedFrom
isPrimaryTopicOf
name
Ancyloceratida
@en