Seiffert ER

Lineage diversity through time Sirenian lineage diversity, quantified at half-million-year increments, is summarized in Fig. 6. As our phylogenetic analysis excludes many fossil species that are unrepresented in the morphological matrices of Furusawa (2004), Benoit et al. (2013), and Vélez-Juarbe & Wood (2018), this time-slice “lineages through time” (LTT) plot should be interpreted as minimum diversity estimates at all temporal samples.

Introduction The twenty extant species of elephant-shrews, more properly called sengis and more formally called macroscelideans, are African mammals that comprise the taxonomic order Macroscelidea. All sengi taxa are predominantly insectivorous feeders and all are small bodied with various species ranging from mouse-to-squirrel sizes (Heritage, 2018).