Wyniki wyszukiwania - BazTech

Ograniczanie wyników

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: teropod

Sortuj według:

Ogranicz wyniki do:

An enigmatic theropod Cryolophosaurus: reviews and comments on its paleobiology

Yun Changyu

Volumina Jurassica

2019

Vol. 17, no. 1

103--110

Cryolophosaurus is a genus of theropod dinosaur that is characterized by its distinctive crest formed by dorsally expanded lacrimals. Although its fossils are rare, currently recognized materials suggest this taxon was the largest predator in the Early Jurassic times in Antarctica, indicating it was the apex predator in its ecosystem. The skeleton of Cryolophosaurus bears both advanced and basal characteristics of theropods, making its position within theropod phylogenetic tree controversial. Its unusual anatomical features, size, and the habitat located close to the Jurassic polar circle all differ from other Early Jurassic theropods, indicating it was one of the most ecologically significant taxon of all theropods.

Ślady wielkich teropodów z wczesnojurajskich osadów Gór Świętokrzyskich

Niedźwiedzki G.

Przegląd Geologiczny

2006

Vol. 54, nr 7

615-621

Numerous gigantic and large theropod dinosaur footprints were recently discovered in the Lower Jurassic deposits of the Holy Cross Mountains (central Poland). These finds provide paleoichnological evidence for the occurrence of gigantic predatory dinosaurs in the earliest Jurassic (Hettangian) times. The gigantic and large theropod tracks came from two well-known lower Hettangian tracksites at Sołtykow and Gromadzice. The Sołtyków outcrop represents a siliciclastic coal-bearing lithofacies association of a fairly well-watered alluvial plain. The sequence from the Gromadzice site is dominated by typical meandering river deposits with lenticular, incised channels and overbank mudstones, rich in drifted flora and plant roots. Hitherto, twenty four specimens of gigantic theropod Eubrontes-like footprints (50–65 cm long) were found at Sołtyków tracksite. Another large theropod footprints (30–45 cm) identified at Sołtyków, resemble Kayentapus-like ichnites and classic ichnotaxa of the Newark Supergroup (i.e., Eubrontes giganteus Hitchcock, 1845 sensu Olsen et al., 1998). In the Gromadzice site, large Eubrontes giganteus, Eubrontes sp., and cf. Eubrontes sp. footprints were identified. The intriguing gigantic ichnites from Sołtyków are more similar to the large prints left by Middle–Late Jurassic theropods than to other finds from the Early Jurassic.