Table 2 Comparison among characteristics of Scombroclupea species

From: Scombroclupea occidentalis sp. nov. (Clupeiformes, Teleostei) from the Cenomanian (Cretaceous) Plattenkalk deposits of NE Mexico

  Scombroclupea macrophthalma Scombroclupea diminuta Scombroclupea occidentalis n. sp.
Number of vertebrae 39–42 39–40 35–36
Number of anal finlets 6 2–6 5
Number of postpelvic scutes 7–10 10–11 6–7
Pleural rib/preural vert. ratio 0.58 0.59 0.56
Posterior margin of caudal fin Straight Straight Lobed
Neural spine of pu2 Distally broadened Needle-shaped Distally broadened
Maximum lateral extension of horizontal laminae Reaches ¾ of vertebral diameter Unknown Equals vertebral diameter