What are the exception of phylum mammalian in biology?
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ᴍᴀᴍᴍᴀʟs ᴀʀᴇ ᴛʜᴇ ᴠᴇʀᴛᴇʙʀᴀᴛᴇs ᴡɪᴛʜɪɴ ᴛʜᴇ ᴄʟᴀssᴍᴀᴍᴍᴀʟɪᴀ (/ᴍəˈᴍᴇɪʟɪə/ ғʀᴏᴍ ʟᴀᴛɪɴ ᴍᴀᴍᴍᴀ "ʙʀᴇᴀsᴛ"), ᴀ ᴄʟᴀᴅᴇ ᴏғ ᴇɴᴅᴏᴛʜᴇʀᴍɪᴄ ᴀᴍɴɪᴏᴛᴇs ᴅɪsᴛɪɴɢᴜɪsʜᴇᴅ ғʀᴏᴍ ʀᴇᴘᴛɪʟᴇs (ɪɴᴄʟᴜᴅɪɴɢ ʙɪʀᴅs) ʙʏ ᴛʜᴇ ᴘᴏssᴇssɪᴏɴ ᴏғ ᴀ ɴᴇᴏᴄᴏʀᴛᴇx (ᴀ ʀᴇɢɪᴏɴ ᴏғ ᴛʜᴇ ʙʀᴀɪɴ), ʜᴀɪʀ, ᴛʜʀᴇᴇ ᴍɪᴅᴅʟᴇ ᴇᴀʀ ʙᴏɴᴇs, ᴀɴᴅ ᴍᴀᴍᴍᴀʀʏ ɢʟᴀɴᴅs. ғᴇᴍᴀʟᴇs ᴏғ ᴀʟʟ ᴍᴀᴍᴍᴀʟ sᴘᴇᴄɪᴇs ɴᴜʀsᴇ ᴛʜᴇɪʀ ʏᴏᴜɴɢ ᴡɪᴛʜ ᴍɪʟᴋ, sᴇᴄʀᴇᴛᴇᴅ ғʀᴏᴍ ᴛʜᴇ ᴍᴀᴍᴍᴀʀʏ ɢʟᴀɴᴅs.
ᴍᴀᴍᴍᴀʟs ᴀʀᴇ ᴛʜᴇ ᴠᴇʀᴛᴇʙʀᴀᴛᴇs ᴡɪᴛʜɪɴ ᴛʜᴇ ᴄʟᴀssᴍᴀᴍᴍᴀʟɪᴀ (/ᴍəˈᴍᴇɪʟɪə/ ғʀᴏᴍ ʟᴀᴛɪɴ ᴍᴀᴍᴍᴀ "ʙʀᴇᴀsᴛ"), ᴀ ᴄʟᴀᴅᴇ ᴏғ ᴇɴᴅᴏᴛʜᴇʀᴍɪᴄ ᴀᴍɴɪᴏᴛᴇs ᴅɪsᴛɪɴɢᴜɪsʜᴇᴅ ғʀᴏᴍ ʀᴇᴘᴛɪʟᴇs (ɪɴᴄʟᴜᴅɪɴɢ ʙɪʀᴅs) ʙʏ ᴛʜᴇ ᴘᴏssᴇssɪᴏɴ ᴏғ ᴀ ɴᴇᴏᴄᴏʀᴛᴇx (ᴀ ʀᴇɢɪᴏɴ ᴏғ ᴛʜᴇ ʙʀᴀɪɴ), ʜᴀɪʀ, ᴛʜʀᴇᴇ ᴍɪᴅᴅʟᴇ ᴇᴀʀ ʙᴏɴᴇs, ᴀɴᴅ ᴍᴀᴍᴍᴀʀʏ ɢʟᴀɴᴅs. ғᴇᴍᴀʟᴇs ᴏғ ᴀʟʟ ᴍᴀᴍᴍᴀʟ sᴘᴇᴄɪᴇs ɴᴜʀsᴇ ᴛʜᴇɪʀ ʏᴏᴜɴɢ ᴡɪᴛʜ ᴍɪʟᴋ, sᴇᴄʀᴇᴛᴇᴅ ғʀᴏᴍ ᴛʜᴇ ᴍᴀᴍᴍᴀʀʏ ɢʟᴀɴᴅs.
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1. mammals are found in a variety of habitats polar ice caps, deserts, mountain, forest ,grasslands .
2. The most unique mammalian characteristic is the presence of mammary glands.
3. They have two pairs of limbs.
4. The skin of mammals is unique in possessing hair .
5. External ears or pinna are present.
6. Respiration is by lungs.
2. The most unique mammalian characteristic is the presence of mammary glands.
3. They have two pairs of limbs.
4. The skin of mammals is unique in possessing hair .
5. External ears or pinna are present.
6. Respiration is by lungs.
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