3,500,000,000 years ago Blue-green algae was the first life on earth 370,000,000 years ago ...
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Transcript of 3,500,000,000 years ago Blue-green algae was the first life on earth 370,000,000 years ago ...
![Page 1: 3,500,000,000 years ago Blue-green algae was the first life on earth 370,000,000 years ago Vertebrates appeared Amphibians and reptiles.](https://reader035.fdocuments.us/reader035/viewer/2022062517/56649f325503460f94c4e311/html5/thumbnails/1.jpg)
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3,500,000,000 years agoBlue-green algae was the first life on earth
370,000,000 years agoVertebrates appearedAmphibians and reptiles
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65,000,000 years ago Dinosaurs
disappeared from fossil record
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70-40 million years agoDevelopment of placental mammals
Placental mammalsHave a placenta through which the embryo
and fetus are nourished through the uterus
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Pariah dogsSemi-feral dogs that live near towns and
survive by scavenging on garbage
Wolf pupsHunters tame young of their preyCompanions or watchdogsFossils date back 12000 years
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cats - 3500 years ago
The ancient Egyptian legend has it that the dead spirits feared cats. Therefore, they were considered guardians of the after world. Many mummified cats have been found in tombs throughout Egypt.
Also control of rodents
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Dogs 72 million dogs In 37.2 % of
households
Cats 81.7 million cats In 32.4 % of
households
**Most cat owners have an average of 2 cats
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Pet food Veterinary
Increased 38% for dogs since 2001 Supplies and over the counter
medicines Live animal purchases Pet services (grooming, boarding)
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Hospitals Colleges and universities Diagnostic labs Pharmaceutical and biotechnology
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Pet care workers Zoo administrators Lab animal care workers Small animal breeders Animal trainers Animal groomers Veterinarians Veterinary technicians biologist
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Taxonomy the science of naming an classifying
organisms 7 taxonomic divisions
Kingdom Phylum Class Order Family Genus species
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Monera - bacteria
Protista – single celled organisms
Plantae – multicellular, photosynthesizing
Fungi – mold, yeast
Animalia –invertebrates and vertebrates
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Have an embryonic notochordA flexible cord of cells in the embryo stage
of growth that eventually becomes the vertebra
Dorsal tubular nerveSpinal chord
Pharyngeal or throat area gillsThroat, nose, mouth area
A rear area tail
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MammalsMammary glandsCovered in hairWell developed
brain
ReptiliaCold blooded LungsBone skeletonScales or platesHeart = 3
chambers
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AvesWarm bloodedTwo legs, wings,
feathersLay eggs
OsteichthysesBony fishLive in waterBreath with gillsscales
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Kingdom – Animalia Phylum – Chordata – animal with vertebrae Class – Mammalia – animals that suckle young Order – Carnivora – meat eaters Family – Canidae – dog family Genus – Canis - dogs Species – familiaria – domestic dog
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Genus Species
DogCanis familiaris