bilateria

This fearsome reptile is a type of constrictor known as the Blood Python (Python curtus). They’re from Southeast Asia and slither their way through swampy, poorly drained areas and low forested hills. Most people know this snake either for their leather, which approximately 100,000 individuals are killed for a year, or they’re kept as exotic pets. Being wild animals, they are overall considered unpredictable and aggressive, although captive bred blood pythons are considered more docile. In they wild they feed on a variety of small mammals and birds, whereas in captivity they only feed on rats. Females tend to be larger than males, both being heavy built. Measuring in at 1.5 - 2.5 m (5-8 ft), they have short tails in comparison to the rest of their body. These wild pythons will spend most of their time underwater, stalking and waiting for prey, and then once the opportunity comes..Ambushing it. They have an advantage though, since their lower jaw suspends for larger prey and they have curved teeth for an improved grasp on prey. They also contain heat-sensing pits to detect warm blooded prey, along with pits that are evidence these were, at one time, venomous snakes. An internal pair of hind legs is used by males to hold onto females when mating, although may leave a scratch if being used for self-defense. 

Photo credit: shadowshador

Corvus albus,image by stuart Burns is licensed under CC BY 2.0 (1st image)

Taxonomy: Eukaryota-Filozoa-Eumetazoa-Bilateria-Deuterostomia-Chordata-Craniata-Vertebrata-Gnathostomata-Eugnathostomata-Teleostomi-Tetrapoda-Reptiliomorpha-Amniota-Sauropsida-Romeriida-Diapsida-Neodiapsida-Sauria-Archosauromorpha-Crurotarsi-Archosauria-Avemetatarsalia-Dinosauromorpha-Dinosauriformes-Dinosauria-Saurischia-Eusaurischia-Theropoda-Neotheropoda-Chuniaoae-Paraves-Avialae-Aves-Carinatae-Neornithes-Neognatae-Neoaves-Terrestrornithes-Dendrornithes-Australavis-Eufalconimorphae-Psittacopasserae-Passeriformes-Passeri-Corvida-Corvoidea-Corvinae-Corvini-Corvus-Corvus albus

Pied Crow

Status:

Your tag made me curious so in answer to your question: shit is about 555 million years old because that’s how old assholes are (bilateria are animals with distinguishable mouths and assholes). I hope this new info has made your day better

I will literally never have a better friend

Thaumaptilon walcotti and the early evolution of the Cnidaria

Jonathan B Antcliffe1

1University of Oxford

The Cambrian Burgess Shale from British Columbia, Canada has provided generations of palaeontologists with new and wonderful puzzles concerning the early evolution of animal life. Thaumaptilon is one of the most intriguing of these as it links to two major problems in early animal evolution. First is the possible connection between enigmatic Ediacaran age (c. 565Ma) taxa such as Charnia and their possible successors such as Thaumaptilon from the Cambrian. It has been thought that if we could understand the relationships of Thaumaptilon to modern animals, then by inference we could understand the relationship of the critically important Ediacaran biota. Second is that Thaumaptilon has been interpreted as an early soft bodied cnidarian. The early evolution of the Cnidaria is poorly understood as Cambrian cnidarians are rare and often poorly preserved. This is particularly problematic as the bilateria appear in the fossil record at the same time, if not even before, the earliest reliable cnidarian fossils. Here new ontogenetic, anatomic, and decay data are presented that aims to resolve these major questions with implications for the earliest evolution of the Cnidaria and the battle between convergent and contingent patterns of evolution in the Cambrian Explosion.

A presentation abstract from the Palaeontological Association 58th Annual Meeting.

Hedwig Brouckaert  

Bilateria-G,C

2011

Drawing on archival inkjet print on Hahnemühle Matt Fine Art paper 308 g/m2

157 x 111,2 cm 

Corvus genus taxonomy

Taxonomy: Eukaryota-Filozoa-Eumetazoa-Bilateria-Deuterostomia-Chordata-Craniata-Vertebrata-Gnathostomata-Eugnathostomata-Teleostomi-Tetrapoda-Reptiliomorpha-Amniota-Sauropsida-Romeriida-Diapsida-Neodiapsida-Sauria-Archosauromorpha-Crurotarsi-Archosauria-Avemetatarsalia-Dinosauromorpha-Dinosauriformes-Dinosauria-Saurischia-Eusaurischia-Theropoda-Neotheropoda-Chuniaoae-Paraves-Avialae-Aves-Carinatae-Neornithes-Neognatae-Neoaves-Terrestrornithes-Dendrornithes-Australavis-Eufalconimorphae-Psittacopasserae-Passeriformes-Passeri-Corvida-Corvoidea-Corvinae-Corvini-Corvus

image

A Field Guide to the Birds, Roger Tory Peterson, 1964: Silhouettes of Corvidae

Image taken from: http://inkmaps.tumblr.com/post/3321372316/a-field-guide-to-the-birds-roger-tory-peterson