Tutayev

Tutayev (Тута́ев) is a town in Yaroslavl Oblast, Russia. It was established in 1822 as Romanov-Borisoglebsk from two much older towns on opposite sides of the Volga River: Romanov and Borisoglebsk.

Tutayev's population is 39,643. In comparison, population totals from past censuses were:

History
Before 1918, the town was called Romanov-Borisoglebsk (Рома́нов-Борисогле́бск); the Bolshevik government of the USSR renamed it Tutayev, after a Red Army officer. Until 1822, when an order of the Tsar united them, there were two separate towns: Romanov, founded in the late-14th century, and Borisoglebsk, established in the 15th century. The right bank of the town is still referred to by locals as the "Borisoglebsk side", and the left as the "Romanov side".

Geography
The majority of the population lives on the Borisoglebsk side, on the right bank of the river. The areas of town nearest to the Volga's right bank have many old wooden houses and historical buildings —including the Cathedral of the Resurrection— but further away from the river, Soviet-era apartment buildings predominate. There is no bridge across the Volga in Tutayev, so people have to use a ferry or, alternatively, travel north to Rybinsk or south to Yaroslavl to cross.

Paleontology
Fossils of Early Triassic temnospondyls are known from Tutayev. Remains of Thoosuchus yakovlevi and  Benthosuchus korobkovi were found in the Lower Olenekian deposits of this location.

Administrative and municipal status
Within the framework of administrative divisions, Tutayev serves as the administrative center of Tutayevsky District, even though it is not a part of it. As an administrative division, it is incorporated separately as the town of oblast significance of Tutayev—an administrative unit with the status equal to that of the districts. As a municipal division, the town of oblast significance of Tutayev is incorporated within Tutayevsky Municipal District as Tutayev Urban Settlement.

Economy
Tutayev is home to the Tutayev Motor Plant, which is one of the largest producers of diesel engines for automobiles and tractors in the Commonwealth of Independent States.