What is .DLT file extension?
Dataset created by the DELTA System, an integrated set of programs used for recording taxonomic descriptions in the DELTA format (Description Language for Taxonomy); contains taxonomic data such as leaf length and flower color that's organized through DELTA.
To create a DLT file in DELTA Editor:
Select File ? New Dataset.
Enter in your data, then Select File ? Save Dataset.
Choose your save location (you can create a new folder for the DLT file if you want), name your file, and click Save.
You can see a list of software programs here on easyfileopener.org that can open this file type so that you don’t need to search for it on the web. You can then open your file with this extension using a software listed below.