Simplify the following text for a Grade 10 native English-speaking person.
Original: Although it was initially assigned to the badger group in the 1860s , it is now generally accepted that they bear very few similarities to the subfamily Melinae , instead being much closer to the marten family .
Simplified: Although it was first put to the badger group in the 1860s , it is now generally thought that they do not have much in common with the subfamily Melinae , and are instead closer to the marten family .