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7. Earnings per Share
 3 Months Ended
Mar. 31, 2021
Notes  
7. Earnings per Share

7.Earnings per Share 

For the three-month periods ended March 31, 2021 and 2020, potentially dilutive shares including outstanding stock options (Note 13) and warrants (Note 12) and convertible debt (Note 15) were excluded from the computation of diluted loss per share because they were anti-dilutive due to net losses in those periods. For the periods ended March 31, 2021 and 2020, potentially dilutive common stock equivalents excluded from the calculation of diluted earnings per share as their effect would have been anti-dilutive are as follows:

 

 

March 31,

2021

March 31,

2020

Stock options

5,625,000

5,012,500

Stock purchase warrants

5,975,027

6,333,334

Convertible debt

9,710,318

4,916,667

Total

21,310,345

16,262,501