paleozoic aquarium banner
Dunkleosteus terrelli
Dunkleosteus #1
Dunkleosteus terrelli is a species of the order Arthrodira, class Placodermi, lived in the Upper Devonian sea as a apex predetor, perhaps cruised the seas of North America and Eurasia in that time 3), 4).
Dunkleosteus #2
Most species of the placoderms had dorsoventrally compressed body forms and poorly developed heterocercal tails, so they have been interpreted as bottom-dwellers and swimmers using undulation of their bodies 3).
Dunkleosteus terrelli are only known from the head shields and a few articulated remains, consequentlly, they have been representated in reconstruction image relied on other small arthrodire placoderm, such as Coccosteus 3), 4).
Dunkleosteus #3
But, Dunkleosteus terrelli is 4.5 - 6m in length, and they are oval in cross-section 3). In addition, New model based on the ecomorphological approach estimates 8.79m total body length, and predicts their caudal fin having well-developed ventral lobe, high heterocercal and hypocercal angles, narrow peduncle and wide span, suggesting Dunkleosteus terrelli would have had to be a good swimmer 4).
Dunkleosteus #4
Dunkleosteus had a bladed jaws with a well-developed anterior cusp, they could suction during prey capture, as modern fishes do 1, 2). Their bite was extraordinary strong, greater than those of most modern mammalian predators, including the spotted hyenas, which are said to crack bones 1), 2).
Dunkleosteus #5
These characters suggest that Dunkleosteus could penetrate protective armor, such as cuticle or dermal bone, allowing this apex predator to potentially eat anything in its ecosystem, including other placoderms 1), 2).
Dunkleosteus #6
Some species of the placoderms from the Upper Devonian formation had embryos inside their body, suggesting some placoderms were internal fertilization and vivoparous 5). But, the direct evidences that Dunkleosteus terrelli also was vivoprous have not been found yet 3).
It is difficult to make some thin, narrow, or sharp parts on the needle felting works without glues or wires. Exactly, in case of this work, making the sharp bladed jaws with soft felts and reconstruction of fearsome appearance is a "mission impossible".
created in December 2016.
modified in March 2020.