Skip to main content


Ammonite Model
Ammonite Fossil
Today we are going to talk about an entire Subclass of animals known as Ammonites. These shelled sea creatures lived for millions of years before going extinct along with the Dinosaurs during the late Cretaceous.

Between 240 and 65 million years ago, Ammonites could be found throughout the Oceans of the World. They ranged in size, depending on species, with the largest having shells that could grow as large as 1m in diameter. Ammonite fossils are more abundant than those of just about any other creature, since they lived for so many years and in so many places.

Ammonites lived in schools and hunted smaller sea creatures. They consumed their prey through a beak-like mouth hidden among its tentacles.

Ammonites most likely moved around by shooting water from spouts in their bodies. Their actual lifestyle is pretty speculative though, because unlike other prehistoric invertebrates (like Nautelids), the Ammonites have no living relatives.

A final fun fact to start the weekend? The name Ammonite comes from "Amun," an Egyptian god who was frequently depicted wearing spiraled horns (similar to the shell pattern).

Status : Extinct for 65 million years
Location : Oceans worldwide
Size : Varies, up to 1m in shell diameter
Classification : Phylum : Mollusca -- Class : Cephalopoda -- Subclass : †Ammonoidea
Images : Lmbuga Commons , Rept0n1x


  1. These are some pretty cool animals. I used to work at an animal hospital in Scottsdale, AZ and I didn't see anything like this come in the office. I think it would be pretty cool if I were able to see something like this.


Post a Comment

Popular posts from this blog

Bornean Orangutan

The Bornean Orangutan is one of two extant Orangutan species in the world. It is the third largest primate (after Gorillas) and is the largest primarily tree-dwelling animal in the world. Males are substantially larger than females, and average at around 165lbs. Bornean Orangutans are largely solitary. A handful might live within a small range but they will seldom interact with one another. Males and females only meet up to breed, which happens only once every several years. A young Orangutan will stay with it's mother for about five years, and the females tend to go about eight years between births. That is the longest interim period of any animal! Sadly, the Bornean Orangutans are in a lot of trouble. They need large forests in order to thrive, and deforestation and habitat degradation has left many homeless. They are also hunted for meat and for traditional medicines. Conservation areas are being established to help these guys in the wild, and it is believed that there are a

10 Years?!

My goodness! It's been 6 years since I went on hiatus, and now more than 10 years since AaD was born, and what a world we've moved in to! Animal a Day is coming back- but in the meantime, check us out on Facebook, for your daily dose of #BIRDNEWS


For anyone who was counting, yesterday was our birthday-- four years! Four years filled with animals from A to Z, more than 1,100 of them! I can't thank my readers enough, it's been wonderful! And in celebration of that milestone... I'm taking a break. Hopefully not forever, but for a little bit at least. In the mean time I plan on getting a new layout out, along with some updates to some of the older articles. I'll post updates here and on the Facebook page, I'm also brainstorming some new animal-related projects, so keep an eye out! Thanks again for four awesome years!