A dinoszauruszoknak milyen szívük volt?

Van Thescelosaurus szív, négy kamrás volt. Madarak pedig dinoszauruszok. A krokodiloknak is négy kamrás szíve van.

Röviden tömören: Nincs abban kétely, hogy négy kamrás szívük volt.

#2 Amit a szívének gondolnak, jóllehet valójában nem az.

"A study published in 2011 applied multiple lines of inquiry to the question of the object's identity, including more advanced CT scanning, histology, X-ray diffraction, X-ray photoelectron spectroscopy, and scanning electron microscopy. From these methods, the authors found the following: the object's internal structure does not include chambers but is made up of three unconnected areas of lower density material, and is not comparable to the structure of an ostrich's heart; the "walls" are composed of sedimentary minerals not known to be produced in biological systems, such as goethite, feldspar minerals, quartz, and gypsum, as well as some plant fragments; carbon, nitrogen, and phosphorus, chemical elements important to life, were lacking in their samples; and cardiac cellular structures were absent. There was one possible patch with animal cellular structures. The authors found their data supported identification as a concretion of sand from the burial environment, not the heart, with the possibility that isolated areas of tissues were preserved."