Devonian Ymeria not added to the LRT

Ymeria denticulata 
MGUH VP 6088 (Clack et al. 2012; ee-mer-ee-ah; Late Devonian; Fig. 1) was described as close to Acanthostega and Ichthyostega, but missing the skull roof. Ymeira preserves many bones in typical 3D fashion. Others like the maxilla, palatine and ectoptyergoid are shown in cross section. The coronoids are robustly denticulated (toothed). Bits of the clavicle + scapulocoracoid are also preserved.

Unfortunately,
not enough is known from this partial skull to nest Ymeria in the large reptile tree (LRT, 1480 taxa). Even so, several comparisons to Acanthostega (Fig. 2) should draw your attention to the many similarities, as the authors noted.

Clack et al. conclude
“A cladistic analysis not only suggests that Ymeria lies adjacent to Ichthyostega on the tetrapod stem, but also reveals substantial topological instability. As the third genus and the fifth species of tetrapod identified from North-East Greenland, it demonstrates the high diversity of Devonian tetrapods in that region.”

References
Clack JA, Ahlberg PE, Blom H and Finney SM 2012. A new genus of Devonian tetrapod from North-East Greenland, with new information on the lower jaw of Ichthyostega. Palaentology 55(1):73–86.

wiki/Ymeria