TABLE 2 in On the identity of historical specimen TM 8501 and the taxonomy of North American Basilosauridae (Mammalia, Cetartiodactyla, Archaeoceti)

TABLE 2. — Overview of diagnostic features recovered for select basilosaurid taxa. TaxonDorudon atroxSaghacetus osirisOcucajea picklingiCynthiacetus peruvianusBasilosaurus cetoidesBasilosaurus isisShape of nuchal crest in lateral viewroundedroundedroundedroundedtriangulartriangularOrientation nuchal crestanterodorsalposterodorsalanterodorsalposterodorsalanterodorsalanterodorsalOccipital shieldunconstrictedconstrictedunconstrictedunconstrictedunconstrictedmore constrictedAnterior process on frontalslarge, lanceolatenonenonesmall, triangularsmall, triangularlarge, lanceolateShape of nasalslanceolatelanceolaterectangularlanceolatelanceolatelanceolateMedial maxillae contact frontalsnoyesnonononoNasal-premaxilla contact/length of nasal0.660.50.660.660.660.66Supraorbital shieldAnteroposteriorly longAnteroposteriorly longAnteroposteriorly longAnteroposteriorly longAnteroposteriorly longAnteroposteriorly short