The new, presumably extinct species, Chrysothamnus pulchelloides, is formally described and illustrated. The plant materials came from Holocene packrat middens. Anatomical and phyletic relationships of the fossil species to extant taxa are discussed.
Anderson, Loran C.
"A new species of fossil Chrysothamnus (Asteraceae) from New Mexico,"
Great Basin Naturalist: Vol. 40
, Article 3.
Available at: http://scholarsarchive.byu.edu/gbn/vol40/iss4/3