Heterosteidae Explained

Heterosteidae (also known as Heterostiidae[1] [2]) is an extinct family of moderately large to giant, flattened, benthic arthrodire placoderms with distinctive, flattened, triangular skulls that are extremely broad posteriorly, but become very narrow anteriorly.[3]

Heterosteidae belongs to the superfamily Dunkleosteoidea, a relative of the giant Dunkleosteus, as shown in the cladogram below:[1]

Genera

Herasmius Orvig, 1969

Heterosteus Asmuss, 1856

Yinostius J. Wang & N. Wang, 1984

Notes and References

  1. Zhu . You-An . Zhu . Min . Wang . Jun-Qing . 1 April 2016 . Redescription of Yinostius major (Arthrodira: Heterostiidae) from the Lower Devonian of China, and the interrelationships of Brachythoraci . . 176 . 4 . 806–834 . 10.1111/zoj.12356. 0024-4082 . free .
  2. Schultze . Hans-Peter . Cumbaa . Stephen L. . 26 April 2017 . A new Early Devonian (Emsian) arthrodire from the Northwest Territories, Canada, and its significance for paleogeographic reconstruction . . 54 . 5 . 461–476 . en . 10.1139/cjes-2017-0013 . 2017CaJES..54..461S . 1807/76893. free .
  3. Book: Denison, Robert. Placodermi Volume 2 of Handbook of Paleoichthyology. 1978. Gustav Fischer Verlag. Stuttgart New York. 978-0-89574-027-4. 65.

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Heterosteidae".

Except where otherwise indicated, Everything.Explained.Today is © Copyright 2009-2024, A B Cryer, All Rights Reserved. Cookie policy.