Protocetus atavus ("first whale") is an extinct species of primitive cetacean from Egypt. It lived during the middle Eocene period 45 million years ago.

Basic facts about Protocetus: lifespan, distribution and habitat map, lifestyle and social behavior, mating habits, diet and nutrition, population size and status.

Georgiacetinae- Georgiacetines are Bartonian protocetids, considered transitional to the basilosaurids.Their skulls and dentition are similar to those of protocetines, but the pelvis in Georgiacetus and Aegicetus indicate a reduced sacroiliac joint, with no substantial articulation between backbone and innominates.Until recently, no hindlimb material was known for this …

Nov 20, 2011 · The story of Protocetus, one of the very earliest whales and the fossil that could have quickly closed a gap in our understanding of one of the greatest transitions in evolutionary history.

Oct 19, 2012 · Protocetus is so far only known from earlier in the Eocene,‭ ‬but by the time the Eocene ended even better developed whales such as Dorudon,‭ ‬Zygorhiza and of course the gigantic Basilosaurus were all swimming and hunting in the world’s oceans.

Protocetus, restored with a body shape like modern whales. Size of Protocetus compared to a human. Protocetus are believed to have had a streamlined, whale-like body around 2.5 metres (8.2 ft) long, but was probably primitive in some respects.[2]

Protocetus atavus ("first whale") is an extinct species of primitive cetacean from Egypt. It lived during the middle Eocene period 45 million years ago. The first discovered protocetid, Protocetus atavus was described by based on a cranium and a number of associated vertebrae and ribs found in middle Lutetian Tethyan marine limestone from Gebel ...

Protocetus atavus ("first whale") is an extinct species of primitive cetacean from Egypt. It lived during the middle Eocene period 45 million years ago.

Protocetus atavus ("first whale") is an extinct species of primitive cetacean from Egypt. It lived during the middle Eocene period 45 million years ago.

Kellogg (, p. 277) regarded Protocetus as being “far advanced” in the transition to life in water, and “well adapted for a pelagic life.”

initially included Protocetus and Eocetus from the middle Eocene of Egypt [11], but with more recent discoveries has expanded into a large paraphyletic family of archaeocetes that includes three subfamilies: Protocetinae, Makaracetinae, and Georgiacetinae [12]. The Egyptian protocetids were the first protocetids to be

Nov 21, 2011 · The story of Protocetus, one of the very earliest whales and the fossil that could have quickly closed a gap in our understanding of one of the greatest transitions in evolutionary history.

Protocetus atavus ("first whale") is an extinct species of primitive cetacean from Egypt. It lived during the middle Eocene period 45 million years ago.

Phiomicetus differs from Protocetus atavus (SMNS 11084) in retaining a small, single-rooted P 1, the presence of nuchal tubercles, shorter external auditory meatus, and in being significantly larger based on the cranial measurements.

Jan 1, 2014 · The family Protocetidae was first delimited to include Protocetus and Eocetus, the only protocetid genera known at that time. Both are from the middle Eocene of Gebel Mokattam, Egypt.

Protocetus atavus ("first whale") is an extinct species of primitive cetacean from Egypt. It lived during the middle Eocene period 45 million years ago. The first discovered protocetid, Protocetus atavus was described by Fraas 1904 based on a cranium …

whales such as Protocetus, Pakicetus, Rodhocetus, and Ambulocetus. The hind limbs of these whales distally show a paraxonic arrangement, a condition in which the axis of symmetry in the foot extend about a plane located between digits III and IV (Figure 4.5).

Protocetus atavus ("first whale") is an extinct species of primitive cetacean from Egypt. It lived during the middle Eocene period 45 million years ago. The first discovered protocetid, Protocetus atavus was described by Fraas 1904 based on a cranium …

An icon used to represent a menu that can be toggled by interacting with this icon.