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I found a nice, clean, empty shell of Tonna sulcosa, Banded Tun, at University Beach, Corpus Christi, Texas. At first I did not recognize it and thought it was a cassid, perhaps in the genus Semicassis, but a colleague (Dr. Wes Tunnell, thanks!) suggested looking into Tonnidae. The shell is easily recognizable by its tan spiral banding on a white shell, and the dark protoconch. I will take better photos, including of the protoconch (which is not perfect), and post them here later. Wikipedia has a great plate that shows the dark protoconch: https://en.wikipedia.org/wiki/Tonna_sulcosa (although the shell I found is more elongate). What caught me by surprise is that I could not recognize the shell, thinking it was a local species, but in the back of my mind I had seen it before. It turns out this species is originally from the Indo-West Pacific, not from the Gulf of Mexico! I do not think it represents an invasive species. The shell I found is in good condition, so it is most likely that someone bought it in a store and dropped it (accidentally or intentionally) in nearby the water. Or maybe someone who knows I often walk on the beach was trying to pull a prank on me? The dimensions of the shell are 100.68 x 69.67 x 54.94 mm.
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I found a nice, clean, empty shell of Tonna sulcosa, Banded Tun, at University Beach, Corpus Christi, Texas. At first I did not recognize it and thought it was a cassid, perhaps in the genus Semicassis, but a colleague (Dr. Wes Tunnell, thanks!) suggested looking into Tonnidae. The shell is easily recognizable by its tan spiral banding on a white shell, and the dark protoconch. I will take better photos, including of the protoconch (which is not perfect), and post them here later. Wikipedia has a great plate that shows the dark protoconch: https://en.wikipedia.org/wiki/Tonna_sulcosa (although the shell I found is more elongate). What caught me by surprise is that I could not recognize the shell, thinking it was a local species, but in the back of my mind I had seen it before. It turns out this species is originally from the Indo-West Pacific, not from the Gulf of Mexico! I do not think it represents an invasive species. The shell I found is in good condition, so it is most likely that someone bought it in a store and dropped it (accidentally or intentionally) in nearby the water. Or maybe someone who knows I often walk on the beach was trying to pull a prank on me? The dimensions of the shell are 100.68 x 69.67 x 54.94 mm.
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I found a nice, clean, empty shell of Tonna sulcosa, Banded Tun, at University Beach, Corpus Christi, Texas. At first I did not recognize it and thought it was a cassid, perhaps in the genus Semicassis, but a colleague (Dr. Wes Tunnell, thanks!) suggested looking into Tonnidae. The shell is easily recognizable by its tan spiral banding on a white shell, and the dark protoconch. I will take better photos, including of the protoconch (which is not perfect), and post them here later. Wikipedia has a great plate that shows the dark protoconch: https://en.wikipedia.org/wiki/Tonna_sulcosa (although the shell I found is more elongate). What caught me by surprise is that I could not recognize the shell, thinking it was a local species, but in the back of my mind I had seen it before. It turns out this species is originally from the Indo-West Pacific, not from the Gulf of Mexico! I do not think it represents an invasive species. The shell I found is in good condition, so it is most likely that someone bought it in a store and dropped it (accidentally or intentionally) in nearby the water. Or maybe someone who knows I often walk on the beach was trying to pull a prank on me? The dimensions of the shell are 100.68 x 69.67 x 54.94 mm.
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I found a nice, clean, empty shell of Tonna sulcosa, Banded Tun, at University Beach, Corpus Christi, Texas. At first I did not recognize it and thought it was a cassid, perhaps in the genus Semicassis, but a colleague (Dr. Wes Tunnell, thanks!) suggested looking into Tonnidae. The shell is easily recognizable by its tan spiral banding on a white shell, and the dark protoconch. I will take better photos, including of the protoconch (which is not perfect), and post them here later. Wikipedia has a great plate that shows the dark protoconch: https://en.wikipedia.org/wiki/Tonna_sulcosa (although the shell I found is more elongate). What caught me by surprise is that I could not recognize the shell, thinking it was a local species, but in the back of my mind I had seen it before. It turns out this species is originally from the Indo-West Pacific, not from the Gulf of Mexico! I do not think it represents an invasive species. The shell I found is in good condition, so it is most likely that someone bought it in a store and dropped it (accidentally or intentionally) in nearby the water. Or maybe someone who knows I often walk on the beach was trying to pull a prank on me? The dimensions of the shell are 100.68 x 69.67 x 54.94 mm.
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I found a nice, clean, empty shell of Tonna sulcosa, Banded Tun, at University Beach, Corpus Christi, Texas. At first I did not recognize it and thought it was a cassid, perhaps in the genus Semicassis, but a colleague (Dr. Wes Tunnell, thanks!) suggested looking into Tonnidae. The shell is easily recognizable by its tan spiral banding on a white shell, and the dark protoconch. I will take better photos, including of the protoconch (which is not perfect), and post them here later. Wikipedia has a great plate that shows the dark protoconch: https://en.wikipedia.org/wiki/Tonna_sulcosa (although the shell I found is more elongate). What caught me by surprise is that I could not recognize the shell, thinking it was a local species, but in the back of my mind I had seen it before. It turns out this species is originally from the Indo-West Pacific, not from the Gulf of Mexico! I do not think it represents an invasive species. The shell I found is in good condition, so it is most likely that someone bought it in a store and dropped it (accidentally or intentionally) in nearby the water. Or maybe someone who knows I often walk on the beach was trying to pull a prank on me? The dimensions of the shell are 100.68 x 69.67 x 54.94 mm.
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I found a nice, clean, empty shell of Tonna sulcosa, Banded Tun, at University Beach, Corpus Christi, Texas. At first I did not recognize it and thought it was a cassid, perhaps in the genus Semicassis, but a colleague (Dr. Wes Tunnell, thanks!) suggested looking into Tonnidae. The shell is easily recognizable by its tan spiral banding on a white shell, and the dark protoconch. I will take better photos, including of the protoconch (which is not perfect), and post them here later. Wikipedia has a great plate that shows the dark protoconch: https://en.wikipedia.org/wiki/Tonna_sulcosa (although the shell I found is more elongate). What caught me by surprise is that I could not recognize the shell, thinking it was a local species, but in the back of my mind I had seen it before. It turns out this species is originally from the Indo-West Pacific, not from the Gulf of Mexico! I do not think it represents an invasive species. The shell I found is in good condition, so it is most likely that someone bought it in a store and dropped it (accidentally or intentionally) in nearby the water. Or maybe someone who knows I often walk on the beach was trying to pull a prank on me? The dimensions of the shell are 100.68 x 69.67 x 54.94 mm.
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Tonna sulcosa (Von Born, 1778)
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Tonna sulcosa (Von Born, 1778)
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Tonna sulcosa (Von Born, 1778)
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Tonna sulcosa (Von Born, 1778)
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1 Summary 1.1 To the gallery of shells 2 Licensing 3 Summary[
edit] Description: Deutsch: Tonna sulcosa, Tonnidae, Gebänderte Tonnenschnecke; Länge 13,5 cm; Herkunft: Philippinen. English: Tonna sulcosa, Tonnidae, Banded Tun; Length 13.5 cm; Originating from the Philippines; Shell of own collection, therefore not geocoded. Dorsal, lateral (right side), ventral, back, and front view. This picture consists of 5 photos. The metadata refer to the dorsal view. Software: Adobe Photoshop, Combine ZM Français : Une coquille de
Tonna sulcosa, un mollusque de la famille des
Tonnidae, provenant des Phillipines. Longueur 13,5 cm. Image obtenue en assemblant cinq vues de la même coquille : dorsale, latérale (droite), ventrale, arrière et avant. Cette image est un photomontage avec les logiciels Adobe Photoshop et Combine ZM. Les métadonnées sont celles de la vue dorsale. Date: 7 January 2011. Source: Own work. Author:
H. Zell.
To the gallery of shells[
edit].
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Summary[
edit] Description: English: A shell of Tonna sulcosa. Date: 8 December 2013. Source: Own work. Author:
Hectonichus.
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Tonna sulcosa (Von Born, 1778)