Hamulinidae
Extinct family of molluscs
From Wikipedia, the free encyclopedia
Hamulinidae is an extinct ammonoid cephalopod family belonging to the order Ammonitida.[1] These cephalopod were fast-moving nektonic carnivores. They lived during the Lower Cretaceous period (Lower Barremian - Upper Barremian).
| Hamulinidae Temporal range: Cretaceous, | |
|---|---|
| |
| Hamulina astieri from southern Alps, on display at Galerie de paléontologie et d'anatomie comparée, Paris | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Subclass: | †Ammonoidea |
| Order: | †Ammonitida |
| Suborder: | †Ancyloceratina |
| Superfamily: | †Ancyloceratoidea |
| Family: | †Hamulinidae Gill, 1871 |
_at_the_Sofia_University_'St._Kliment_Ohridski'_Museum_of_Paleontology_and_Historical_Geology.jpg)
Description
The long main shaft is followed by a hook and a shorter, close, parallel or slightly divergent final shaft. The ammonitic suture is with a subtrifid L. The U is usually reduced or indifferentiated in adults.
