DINOSOURS! on tumblr.

Baby triceratops!

I want you to know that rodent incisors are quite long.

this makes me a little uncomfortable. 

Rodent incisors never stop growing. This means that they need to constantly wear down their teeth otherwise they’ll develop a malocclusion (a misalignment of teeth) between their incisors. Individuals with bad teeth are often unable to eat and will eventually starve to death. 

Engraving showing the diseased part of a skull

Engraving 

From: Osteographia, or the anatomy of the bones 

By: William Cheselden 

Published: [W. Bowyer? for the author], London  1733 

Wellcome Library, London

Fossil Friday Gomphotherium. It had four tusks; two on the upper jaw and two on the elongated lower jaw.

© The Field Museum, GEO79648.

Gomphotherium skull [P14769] and lower jaw [P14770] . Early Pliocene, Valentine Formation.

8x10 Interpositive 

2/1/1939 

Your daily reminder that dogs are weird.

1   – Airedale Terrier 2 – English Bulldog 3  – Australian Cattle Dog 4   – Collie 5   – German Shepherd 6   – Labrador Retriever 7   – Pug 8   – Chinese Shar Pei 9   – Chihuahua 10 – Border Collie 11 – Australian Shepherd 12 – Dalmatian 13 – Pekingese 14 – Great Dane 15 – Rottweiler 16 – Shetland Sheepdog 17 – Bassett Hound 18 – Boston Terrier 19 – Chow Chow 20 – Dachshund 21 – Great Pyrenees 22 – Staffordshire Bull Terrier (Pitbull) 23 – Saluki 24 – Shih Tzu 25 – Beagle 26 – Boxer 27 – Cocker Spaniel 28 – French Bulldog 29 – Siberian Husky 30 – Poodle 31 – Schnauzer 32 – Wolf