What is the primary place of articulation (Uccaran Sthan) for the phonemes belonging to the 'त' varga (त-वर्ग) series?

According to classical Sanskrit and Hindi phonetic grammatical laws, the core operational formula is "Litulashanam Dantyah" (लृतुलसानां दन्त्याः). This directly establishes that the consonants comprising the **त-वर्ग series ($\text{त, थ, द, ध, न}$) are pronounced by touching the tip of the tongue to the upper teeth, classifying them as Dantya (Dental)** phonemes.