Talk:Halszkaraptor

Gigantic cladogram

It is way too large and detailed. Since the new subfamily is basal, there is absolutely no need to list every genus in the other subfamilies. So just list the subfamilies. FunkMonk (talk) 11:39, 7 December 2017 (UTC)

I agree, so I removed almost all of the unnecessary taxa. The images were removed as well but they are not really important until we have more written about comparisons to relatives. IJReid ^{{{T - C - D - R}}} 01:34, 8 December 2017 (UTC)

Looks much better to me... FunkMonk (talk) 01:52, 8 December 2017 (UTC)

Eggs?

"like all dinosaurs, it needed to lay its eggs on land" - is that true? How did aquatic dinosaurs lay eggs on land? 2601:647:4203:CA11:853C:EDD7:5C03:EF47 (talk) 02:35, 11 December 2017 (UTC)

By walking or sliding onto land, since no fully aquatic dinosaurs are known. Lusotitan (Talk | Contributions) 02:44, 11 December 2017 (UTC)

Ooooh OK, I didn't know that "There were many aquatic reptiles that lived during the time of the dinosaurs, including plesiosaurs, nothosaurs, and mosasaurs. (pronounced plee-zee-oh-SAWRS) Plesiosaurs (meaning "near lizard") were flippered marine reptiles from the Mesozoic Era - they were not dinosaurs.". Thanks for the education! 171.66.209.130 (talk) 18:51, 11 December 2017 (UTC)

Semi-aquatic dinosaurs

The claim that the only other non-avian dinosaurs with a semi-aquatic life style are spinosaurids is potentially misleading. Liaoningosaurus is also notable in that it was potentially semiaquatic, and is even more notable for being a carnivorous or omnivorous ornithiscian. (First time editor, apologies if I have formatted or posted anything incorrectly) Robebrothers (talk) 17:08, 19 September 2019 (UTC)

@Robebrothers: if you have a reliable source, go ahead and update the article. --Nessie (talk) 18:05, 19 September 2019 (UTC)

Fabbri et al. (2022) showed that taxa with a high bone density are likely inferred as subaqueous foragers. This result supports subaqueous foraging in Spinosaurus. Yet, the opposite relationship is not true: not all subaqueous foragers have a high bone density. See, for example, Anhinga, a subaqueous forager with a low bone density. Note that low bone density is a theropod simplesiomorphy acquired well before the origin of birds and thus is not a by-product of flight. Note also that Halszkaraptor bone density is almost identical to that of Anhinga, suggesting that its bone density does not necessarily negate some form of aquatic foraging. In fact, high bone density is likely a SUFFICIENT condition for subaqueos foraging, but it is not a NECESSARY condition Dinomarek (talk) 18:41, 1 March 2023 (UTC)

Halzskaraptor ecology

With more and more evidence being stacked against semiaquatic Halzskaraptor, shouldn't it be specified that the semiaquatic nature was only concluded by Cau et al. and the conclusions of others should be inserted as well for balance? Sauriazoicillus (talk) 12:51, 8 July 2022 (UTC)

I think so. It is really strange that there are only two references and both are paper written by Cau. Previously there are some news websites on the reference but probably due to that overlaps information in paper, they are all removed. Strange thing is, Cau, A. (2020) was written to refute Chase (2019) that questioned its ecology,[1] but this article doesn't have mention of that at all. Recently in 2022, this paper[2] also questioned the aquatic habitat of Halzskaraptor. Why there are only theory as semi-aquatic dinosaur in this article? Ta-tea-two-te-to (talk) 07:08, 10 July 2022 (UTC)

Andrea Cau wrote The study by Fabbri et al. (2022) contributed to the debate on the ecology of some spinosaurs. The same simplification is to introduce an ecological interpretation of dinosaurs into the bone itself. For example, confirming the existence of bones than the barynx, is that Suchomimus - with an anatomical representation very visible to the barynx - still had ecology associated with the aquatic environment.

The bones of the neckcaraptor are applicable to the examination of theropods, with the marrow cavity proceeding around the femur. C. T. scans check for defects in the phalanges of the hands and feet, tibia, raminal, radial and ulnar bones. Do we have to conclude that, then, Halskaraptor did not have a semi-aquatic ecology?

No. By analogy with the reasoning of Fabbri et al. (2022) with respect to Suchomimus, the shape of the muzzle, the type of teeth, the morphology of the vertebrae, and the flattening of the bones of the forelimbs are consistent with any form of internal adaptation.

Of all the dinosaurs, the bones supporting Neckcaraptor are the most similar to the bones of some anatids, such as swans. Anatid appendicitis skeleton applicable to the Halszkaraptor skeleton. These birds are lighter than water, but they have developed behaviors that allow them to feed in the water. For example, you swan have immersion only while working, while the rest of the body floats on the surface. As I have argued in the past, the ten behavioral models can also be applied to the anatomical features of the Neck Caraptor. The specific lateral mobility of the body and tail and the particular shape of the hand and forearm of this theropod may serve as a function of maneuvering the body on the surface while the neck is submerged to forage in shallow waters. This "epineectonic" ecology does not require a particularly dense skeleton, as it uses a small addition of its body to float on the surface: the need for an additional feeding area in a floating area may be specially exported to this dromaeosaurid Dinomarek (talk) 13:37, 1 March 2023 (UTC)