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The sexes have similar physical features, but they are sexually dimorphic in size, with the male being much larger than the female. Males are 90–120 cm (35–47 in) in total length and weigh 3.5–6.0 kg (8–13 lb).
Comparison of multiple size estimates for D. terrelli. Dunkleosteus was covered in dermal bone forming armor plates across its skull and front half of its trunk. This armor is often described as being over 2–3 inches (5.1–7.6 cm) thick, [26] [14] but this is only across the thickened nuchal plate at the back of the skull. [14]
Another huge animal of this group was Uintatherium, with skull length of 76 cm (30 in), 1.5 m (4 ft 11 in) tall at the shoulder, [148] 4 m (13 ft) in length and 2.25 t (2.48 short tons), the size of a rhinoceros. [149] Despite their large size, Eobasileus as well as Uintatherium had a very small brain. [148] [149]
A fisher, a mammal related to river otters and weasels, found as roadkill in Ashtabula County in 2023, was recently confirmed to be pregnant, according to the Ohio Department of Natural Resources ...
The robust retractor and protractor muscles move in a winding pattern in opposite directions along the length of the pterygiophore, which exists in a deep longitudinal ridge along the skull. [19] Further, the long and thin inclinator of the deep sea ceratioid anglerfish allows for a distinctly wide range of anterior and posterior motion ...
A human skull and measurement device from 1902. Craniometry is measurement of the cranium (the main part of the skull), usually the human cranium.It is a subset of cephalometry, measurement of the head, which in humans is a subset of anthropometry, measurement of the human body.
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In contrast, the average dimensions of a sample of 40 modern human male molars were 10.2 mm × 11.8 mm (0.40 in × 0.46 in). [11] Ni and colleagues believed the Harbin skull represents a male, judging by the robustness and size of the skull, who was less than 50 years old, looking at the suture closures