ɪt hɐz ɐ ʃˈiːldlˈaɪk ʃˈeɪp, wɪð wˈʌn ˈɛnd dˈɪfɹənt fɹʌmðɪ ˈʌðɚ, ænd baɪlˈæɾɚɹəl sˈɪmətɹi, ænd ɔːlðˈoʊ ɪt hˈæzbiːn sədʒˈɛstᵻd ðˌɐɾɪt pəzˈɛsᵻz ɡlˈaɪd ɹᵻflˈɛkʃən sˈɪmətɹi, sˈʌtʃ sədʒˈɛstʃənz ɑːɹ bˈeɪst əpˌɑːn ɐ tˌæfənˈɑːmɪk ɪfˈɛkt dᵻfˈɔːɹmɪŋ sˌʌm spˈɛsɪmənz.
It has a shield-like shape, with one end different from the other, and bilateral symmetry, and although it has been suggested that it possesses glide reflection symmetry, such suggestions are based upon a taphonomic effect deforming some specimens.