Deuterostome anus

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Radial and indeterminate cleavage
Deuterostome Protostome
Spiral and determinate cleavage
Deuterostome anus Protostome mouth
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A clam dredged up off the coast of Iceland is
thought to have been the longest-lived animal
discovered. Scientists said the mollusc, an
ocean quahog clam, was aged between 405 and 410
years and could offer insights into the secrets
of longevity. BBC News
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Spiders on marijuana made a reasonable stab at
spinning webs but appeared to lose concentration
about half-way through.
Caffeine, one of the most common drugs consumed
in soft drinks, tea and coffee, makes spiders
incapable of spinning anything better than a few
threads strung together at random.
On chloral hydrat, an ingredient of sleeping
pills, spiders drop off before they even get
started
Those on Benzedrine - speed - spin their webs
with great gusto, but apparently without much
planning leaving large holes, according to New
Scientist magazine
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• Chordate Characteristics
• Notochord dorsal rod that supports the body
  (spine)
• Dorsal, hollow nerve tube non-chordates have
  ventral, solid nerve cords
• Pharyngeal gill slits becomes gills or pharynx
  in many species
• Post-anal tail on embryo (or larva)

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Vertebrates only 4 of animals on earth
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Vertebrates only 3 of species
(much less than 1 if adding bacteria
and protists)
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• Vertebrate Characteristics
• vertebral column with cartilaginous or bony
  segments
• endoskeleton of living tissue (compare to
  echinoderms)
• complex circulatory systems
• highly evolved nervous systems
• complex endocrine glands
• sexual reproduction, usually with copulation,
  sexes separate mostly

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Vertebrate Classes
Osteicthyes
Chondricthyes
Agnatha
Amphibia
Mammalia
Aves
Reptilia
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Placoid
Cycloid
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Anura
Caudata
Gymnophiona - Ceacilians
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Chelonia
Squamata
Crocidilia
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Passeriformes
Falconiformes
Anseriformes
Galliformes
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Holotheria
Metatheria
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Rodentia
Carnivora
Perissodactyla
Artiodactyla
Primates
Insectivora
Lagamorpha
Cetecea
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