Brontichthys Claypole, 1894 Titanichthys is an extinct genus of giant, aberrant marine placoderm from shallow seas of the Late Devonian of Morocco, Eastern North America, and possibly Europe.

Unlike its relative, however, the various species of Titanichthys had small, ineffective-looking mouth-plates that lacked a sharp cutting edge.

[7] Rhachiosteus pterygiatus Tapinosteus heintzi Trematosteus fontanellus Bruntonichthys multidens Kendrickichthys cavernosus Bullerichthys fascidens Dinichthys herzeri Hadrosteus rapax Gorgonichthys clarki Heintzichthys gouldii Selenosteidae Tafilalichthys lavocati Bungartius perissus Titanichthys agassizi Titanichthys cf.

clarki The genus shows a great diversity in the Famennian-aged Cleveland Shale, though species are also found in similarly aged strata in Morocco and possibly the Holy Cross Mountains in Poland.

It is based on incomplete nuchal and central plates found in Upper Famennian-aged marine strata of the Holy Cross Mountains in Poland.

[8] The average combined length of the head and trunk shields for T. termieri is estimated to be 200 cm (79 in)[8] When the first fossils of T. termieri were found by geologist Henri Termier, the specimens were originally placed within the genus Gorgonichthys - that is, after Termier was able to convince his colleagues that the bone scraps were of a placoderm, and not a dinosaur.