Analysis 2 (S2 Text, part III.2) is our reference analysis and tree in this work. All parsimony analyses were made with the “traditional search” command of TNT. Matrix with 27 taxa, 184 characters (S2
The Eurasian fossil record is rich with the remains of sminthid rodents, a clade today represented by a single genus, Sicista. In contrast, the North American record of the family is sparse and exclus
Pan-Testudinidae is the total clade of extant terrestrial tortoises, which includes extinct fossil members of their stem lineage. Members of this clade have a rather scarce fossil record in Mexico, an
Echiurans (Thalassematidae), the spoon worms, are an elusive group of unsegmented marine annelids with a convoluted taxonomic history. Their limited fossil record and ambiguous internal relationships
