Based on types of existing life globally at a particular time
Lava that hardens (igneous rock) on the surface
Must be widely distributed and represent a type of organism that existed only briefly in order to help geologists tell the relative ages of the rock layers in which they occur
Information gathered by paleontologists which provides evidence of: history of life on earth, groups of organisms changing over long periods of time, earth's past climate, and past environments and changes in earth's surface
Break in the earth's crust which is always younger than the rock it cuts through
Scientists who study, collect and classify fossils
Extremely thin coating on rock
In horizontal sedimentary rock layers the oldest layer is at the bottom; each higher layer is younger than the layer below it
Well-tested concept that explains a wide range of observations
Age compared with ages of other rocks
Marked by significant worldwide changes in the types of fossils present in rock
All the atoms of a particular type of matter are the same
Age of the invertebrates
Middle era divided into three periods
Divided periods characterized by differences in life forms
Down
A method geologists use to determine the absolute age of rocks, by first determining the amount of a radioactive element in a rock
Preserved remains or traces of living things and are formed when living things die and are buried by sediments
Youngest era divided into two periods
Process by which one unstable element breaks down into another element that is stable
Age of the fishes
Hollow area in the sediment which shows the shape of an organism or part of an organism
Earliest life form to appear; it was a blue-green algae which added oxygen to the atmosphere through photosynthesis
Age of the Amphibians
Solid copy of the shape of an organism
Age of the Reptiles
When an organism no longer exists and never will again
Longest subdivisions; based on the abundance of fossils
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Where is my puzzle?
All your puzzles are accessible from your 'My Puzzles' page, which you can access using the navigation bar at the top when you are logged in.
Be sure to log in using the same email address you used when you created your puzzle.
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There is a 'Make Printable' button on the top left of your puzzle that will let you sign up for a plan or purchase a single puzzle.
Once paid, that button will turn into a 'Preview + Publish' button that will put your puzzle in a format that can be printed or solved online.
Once you publish your puzzle, you can click the print icon or use your browser’s print function.
It looks weird when printed.
First make sure you’ve published your puzzle. See the 'How do I print?' section above for more information.
99% of other printing issues have to do with printer settings. Instead of trying to fiddle with printer settings, which can be time-consuming and frustrating, there are a couple workarounds you can try.
You can try printing from a different browser, since different browsers have different default print settings. Alternately, you can try saving as a PDF (next to the print icon) and print that.
Why isn’t this free?
We invested in building a number of premium features that free sites are unable to offer: the ability to automatically or manually add words to your puzzle, save-as-you-go puzzle editing, the ability to access your puzzles from any computer, an uncluttered and ad-free interface, the ability for friends and colleagues to solve your puzzles online, and quick responsiveness to reported issues.
My Crossword Maker is the lowest-price service we've found that provides these features, and is designed for people who are not satisfied with what free sites are able to provide.
I thought this was free.
We’re sorry you thought My Crossword Maker was free, that must have been frustrating.
We’re constantly trying to provide a clear and straightforward user experience, and we’re not trying to hide the price: on the page where you make your puzzle, the price is listed in the overview in the top left (before you log in), below the 'Make Printable' button (after you log in), in the FAQ below the grid, and also in the tour.
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First check whether you used a different email address to create your account. Your login email is the email address where you received a welcome email from us.
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I am being asked to pay a second time.
If you are a member of My Crossword Maker and are still being asked for payment, then you may have inadvertently created a second account.
Your paid account will have the email address where you received an email confirming your subscription.
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For security a human can’t see or reset your password, so read the below information carefully.
If you haven’t gotten the password reset email, check your spam folder, be sure you’re checking the email account that the email was sent to, and be aware that some school email systems block emails from non-school email addresses.
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Be sure if you copy-paste the password not to get a space on the outside, or if you're typing it keep in mind that it's case-sensitive and that a lower-case L can look like the number 1, etc.
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Not all my words are in my puzzle.
When you hit the 'Arrange' button, our algorithm will try to arrange all your words on the grid, and will move words around to try to fit the most words.
This will get all the words on the grid about 90% of the time, depending on the word list. For the other 10%, you will get an alert explaining that the words that did not fit were added to the scratchpad.
It prints on two pages.
Big puzzles won’t always print on one page — the clues and grid are the smallest we could make them while keeping them readable for everyone.
That said, different browsers print in slightly different ways, so you could try using 'print preview' using a different browser (or try the PDF button) to see if you like how that looks better.
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We generally respond to all reported issues in about a day. If it’s been a few days and you haven’t heard back from us, it’s possible we sent an email that didn’t reach you.
Check your spam folder, and be aware that some school email systems block emails from non-school email addresses. Try providing a different email address if you think our emails to you are being blocked.
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