- Dec 5, 2003
This sort of nonsense gives de-extinctioning a bad name.
It belonged to a large meat-eating dinosaur, possibly a Megalosaurus, which lived between 164 and 175 million years ago," Dr Lomax said.
He added that Ms Woods' discovery had actually turned out to be "a rediscovery", as it had been partially spotted by fossil collector Rob Taylor back in November 2020.
However, despite Mr Taylor posting pictures of his find in a Facebook group dedicated to Yorkshire fossils, it had not been fully exposed at the time and its true importance was not realised, Dr Lomax said.
Plans are now being put in place to recover the print, which according to Ms Woods is in "a fragile state" and is in danger of being "lost to the sea".
If successful, it will go on display at the Rotunda Museum in Scarborough.
That is exactly the queston i asked my selfI love that they used the international dinosaur measurement metric of "...as long as a basketball court", lol.
How much is that in 'double-decker buses'?
I saw on a documentary once that they invented the roaring noise for the theropod from the original King Kong. Nobody had had the need to decide what noises a dinosaur might make prior to that. They've been roaring ever since.This thread is probably pretty sensible and scientific with lots of knowledge.
I therefore may ruin it a tad.
BUT. Something I often think about when I see dinosaurs in movies, tv, even in animatronic representations like in the Natural History museum - why are they pretty much always as roaring ferociously?
I don't think they did. Reptiles, in my limited knowledge, are some of the quietest animals on the planet. You don't hear reptiles roaring, screaming, anything like that.
I think the whole sound thing is a direct derivement from their Greek name of "terrible lizard" - deinos sauros. So, this thing is terrible, it must make terrible scary sounds - like a lion or something equally terible! Except it doesn't mean "terrible" in that sense. A better translation of deinos is "fearfully great"...so big it's scary. Which dinosaurs are.
So. I don't think they roared. I think people made it up about them roaring all the time and being scary because they thought the original Greek name meant something it didn't.
Might all be bxllocks on my part.
Sharks in movies also often roar. They don't in real life.
Nobody had had the need to decide what noises a dinosaur might make prior to that. They've been roaring ever since.
In fact, their variety of vocalisations shows that dinosaurs could have made a range of different noises.
Your intuition that they didn't roar is supported by the evidence and analyses to date - to the extent the fossil record and evolutionary connections provide clues.... Something I often think about when I see dinosaurs in movies, tv, even in animatronic representations like in the Natural History museum - why are they pretty much always as roaring ferociously?
I don't think they did. ...
Members of Archosauria, the archosauriform crown clade, are known from as early as the Middle Triassic (Sereno 1991). Archosauria includes two major lineages, Crurotarsi and Ornithodira (Sereno 1991) (Figure 4). Crurotarsi includes crocodilians (Crocodylia) and several extinct, mostly Triassic taxa (Sereno 1991). Ornithodira includes dinosaurs (Dinosauria) – including birds (Aves) – and pterosaurs (Pterosauria) and a few other extinct forms (Sereno 1991). The vocal organ in extant members of Crurotarsi (crocodilians) is the larynx, whereas in extant members of Ornithodira (birds) it is the syrinx. Because the larynx and syrinx are not homologous, it is most parsimonious to infer that vocalisation arose independently in the two lineages, in which case their common ancestor lacked vocal ability. ...
The syrinx of birds (Ornithodira: Aves) is a series of cartilage rings at the junction of the trachea and primary bronchi, with membranous folds that protrude into the lumen and can be vibrated to produce sound (Brackenbury 1989; King 1989). Vocal production by the syrinx depends on the presence of a clavicular air sac ...
... Without evidence for a clavicular air sac homologous with that of birds, we should not presume that basal birds and non-avian ornithodirans possessed a functioning syrinx.
The lack of evidence of a syrinx in ornithodirans outside Ornithothoraces will, no doubt, disappoint fans of roaring movie dinosaurs. However, lack of ability to vocalise does not necessarily mean that such animals were silent altogether. Many extant reptiles communicate with each other and with potential predators by non-vocal acoustic means such as hissing, clapping jaws together, grinding mandibles against upper jaws, rubbing scales together, or use of environmental materials (e.g. splashing against water) (Campbell and Evans 1972; Gans and Maderson 1973; Garrick et al. 1978; Thorbjarnarson and Hernández 1993). Birds also use non-vocal acoustic means of communication such as hissing, bill-clapping, stamping and wing beating (Welty and Baptista 1988; Kear 2005; Nelson 2005). Non-avian theropods with feathered wings may have beaten their wings in acoustic displays as extant birds often do. Sauropod dinosaurs of the family Diplodocidae, known from the Upper Jurassic of North America and Africa (Upchurch et al. 2004), possessed whiplike tail tips that could have produced loud, whiplike cracking sounds for intraspecific communication or in response to predators (Myhrvold and Currie 1997).
The morphology of the nasal passage in Lambeosaurinae, a Laurasian clade of Upper Cretaceous ornithischians (Horner et al. 2004), suggests a role in sonic resonation (Weishampel 1981). However, resonation need not be for vocal sounds. Some extant snakes lack vocal cords but possess resonating chambers that emphasise the low frequencies of the hiss (Young 1991). The variety of visual display structures in pterosaurs and dinosaurs (Chapman et al. 1997; Molnar 2005; Unwin 2006) shows that visual communication was important to these animals. They may therefore have relied largely on visual means of communication. Extant precedent for such reliance is found among lizards, in which non-chemical communication is primarily visual (Pough et al. 1998), despite their excellent hearing (Wever 1978).
The fossil record does not support the notion that commonly portrayed dinosaurs vocalized much (if at all) - much less that they routinely "roared" or otherwise made sounds with communicative implications.
A well-preserved dinosaur footprint has been discovered by a four-year-old girl on a beach.
Lily Wilder spotted it at Bendricks Bay, Barry, in the Vale of Glamorgan - and scientists believe it could help establish how they walked.
The footprint, spotted in January, is 220 million years old and had been preserved in mud.
While it is impossible to tell what type left it, the print is 10cm long and likely from a 75cm tall dinosaur.
National Museum Wales palaeontology curator Cindy Howells described it as "the best specimen ever found on this beach".
(Continues in longer article)
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