Heme Iron
Iron that is easily absorbed into the bloodstream in comparison to Non- Heme Iron. It can be found in certain meats such as chicken, beef, ham, duck, lamb etc. In terms of poultry, the darker the meat then the larger quantities of Iron there will be.
Heme Iron is easily absorbed in the bloodstream, so if your concerned about receiving ample quantities of Iron in your daily diet, then red meats are your best bet.
Non-Heme Iron
Iron which isn't as easily absorbed In the bloodstream as Heme Iron and is generally found in plant based foods such as lentils, nuts, seeds, beans, spinach and potatoes with skin. You may also find Non-Heme Iron in fortified breakfast cereals.
Non-Heme Iron doesn't absorb as easily as Heme Iron, so you're best off recieving your daily dose of Iron from meats (particularly red meat) if you're concerned with your daily Iron intake.