At the end of the winter of 1888, thanks to the efforts of Mr. Federico Godoy of Concepción, I received the skin of a tunina caught in the bay of Talcahuano, which clearly constitutes a new species, which I name Phocaena obtusata.
Dimensions:
• Total length, measured at the curve of the back – 149cm
• Distance between the tip of the snout and the dorsal fin – 69cm
• Length of the root of the dorsal fin – 20cm
• Perpendicular height of this fin – 9cm
• Distance between the dorsal and caudal fins – 60cm
• Length of the caudal fin at its midpoint – 11cm
• Width of the caudal fin – 35cm
• Distance between the tip of the snout and the pectoral fin – 31cm
• Length of the root of this fin – 8cm
• Oblique height of the root – 19cm
• Length of the mouth – 15cm
• Distance between the tip of the snout and the eye – 18cm
• Distance between the two pectoral fins – 20cm
• Maximum body circumference excluding the pectoral fins – 85cm
The body is well Fusiform; the dorsal and ventral lines are almost of the same curvature, the ventral being slightly more convex. The forehead is very sloping and only slightly convex. The eye is located in line with the mouth, and at one-third of the height of the head. The anterior part of the head, viewed from above, shows the shape of an equilateral triangle with a rounded point. The caudal part of the body is keeled as usual, and the dorsal line shows a marked angle at the beginning of this keel. The dorsal fin has a very blunt and rounded tip, and its posterior margin is only slightly forked. The pectoral fins are even more blunt, and almost the same width along their entire length; they are situated very low, as is proven, besides the drawing, by the short distance between them. The coloration is quite distinctive: the lower half of the body is a beautiful silvery white, the upper half a very dark black, and from the white portion extend five short bands of the same color upwards. The fins are black. I cannot guarantee the width, etc., of these bands; the skin I received had lost its epidermis in several places, so it was necessary to paint the embalmed animal. But disregarding the color, the shape of the head and fins alone would be sufficient to distinguish this species.
- Philippi, Anales Museo Nacional de Chile, Premira Seccion Zoolojia, 1893, pp. 12-13
Phantom species don’t often jump out at me when I’m looking through books or illustrations – often their peculiarities aren’t terribly obvious until you get into the details. For example, Bory’s Dolphin looks fairly unremarkable unless you really scrutinize details like the white moustache. However, this one jumped out at me right away, for obvious reasons.
My sources come in many languages, but this is the first Spanish source I’ve had. The description comes from Rodolfo Amando Philippi (born Rudolph Amandus Philippi in 1808), a German-Chilean zoologist. He describes a very unique porpoise with a “lobed” pattern which is not immediately identifiable.
An interesting element of this report is that the animal was brought to Philippi in the form of a skin, and I’m not exactly sure what he means by that (what would a dolphin skin even look like?). However, he does mention that the skin was damaged to the point of needing to be touched up with paint, which is interesting. I previously made a blog post cataloguing rare examples of cetacean taxidermy, highlighting how they are difficult to preserve.
 |
| An example of a preserved dolphin whose colouration has been touched up with paint. Would you feel confident describing this species based on this? Photo: @wingcoaster |
I’m curious if the porpoise illustrated was based on Philippi’s observations pre-touch up or post-touch up, but I’m inclined to say this was made post-touch up or perhaps during. There’s a good chance someone deliberately painted this dolphin like this before the new species claim was made, like a shady taxidermist dying a bird’s feathers so they can sell a rarer bird. Only in this case, the aim may not have been to deliberately dupe a collector, but a genuine attempt at preservation.
I recently recorded a presentation where I came up with several key reasons why there are so many examples of phantom whale species, and one of my hypothesized contributing factors was capture and preservation issues, and I used Phocaena obtusata as an example of this. Because preserved specimens do not age gracefully, putting observations to paper based on them is risky. Daniel Eschricht (1798-1863), who I was also researching, seemed very fond of wet specimens, which I suspect preserve the anatomy better. But, as with many marine species, whale colouration is fickle and not easily preserved, making live or recently dead individuals the best references.
This description also introduced me to the word tunina, also spelt tonina and toninha and seemingly used in both Spanish and Portuguese. This appears to be a regional name for porpoise-like cetaceans. It is similar to the Dutch word tonyn, used for the Harbour Porpoise, but I’m unsure if/how it is related.
 |
| Phocaena albiventris - now regarded as Cephalorhynchus eutropia, the Chilean Dolphin - illustrated by Philippi |
This species is one of a few “paper whales” that has a paper dedicated to it, specifically “Goodall, R. N. P., A. P. Sobral, M. Labal de Vinuesa, and I. S. Cameron. 1988b. On Phocoena obtusata, with a comparison of certain diagnostic characters in South American phocoenids and the genus Cephalorhynchus. Rep. Int. Whal. Comm. (special issue) 9:259–276.” In this paper the team comes to the conclusion that the porpoise described by Philippi is actually Cephalorhynchus eutropia, the Chilean Dolphin. However, I cannot find this damn paper. This is the first one that’s truly evaded me, I’ve found every source I’ve needed to up until this point and I guess I’ve just been incredibly lucky. At some point I may get desperate and try reaching out to random scientists but if anybody can find me a copy of this paper, I’d be very appreciative.
This is a whale I’ve wanted to draw for quite a while but was procrastinating on it despite that. I took a bit of artistic liberty in interpreting the lighter band around the colour division in the original illustration as a band of grey, which I thought gives the porpoise a very 1970s vibe. The Chilean Dolphin does have a white belly, but the white does not come up the side of the dolphin in lobes.
It’s hard to pick a favourite, but this might be my favourite “paper whale” in terms of appearance.
Addendum: 1988 Re-examination
Added Nov 3, 2026
Thank you Tyler Greenfield for helping me locate the 1988
re-examination of Phocaena obtusata – it’s a lot more interesting than I thought
it would be, and includes photos! The paper is authored by R.N.P. Goodall, A.P.
Sobral, M. Labal de Vinuesa and I.S. Cameron.
Goodall et al’s paper opens with a translation of the
original description as well as past theories; among them are many suggestions
that the strange porpoise was actually a Spectacled Porpoise, Phocoena
dioptrica (in this paper it is named Australophocaena dioptrica,
after Barnes, 1985).
To quote the paper, “In October 1978, Goodall and Cameron
visited MNHN-S, Chile. The specimen of Phocaena obtusata was not on public
display, although a similar, slightly longer stuffed skin was. Only after three
days of searching was an unnumbered specimen, later designated as MNHN-S 604,
found hidden in the back of a cabinet and identified by comparing the
measurements of three skins in the museum (labelled Cephalorhynchus eutropia by
the museum staff) with those given by Philippi (Table 1).”
The preserved tunina was in a peculiar state:
 |
| The Phocaena obtusata specimen |
“All three skins (Fig. 2), as well as another of Phocoena
spinipinnis, were dried, badly mounted and sewn, but the measurements of MNHN-S
604 coincided enough with those of Philippi to convince us that we had found
his specimen. Most of the body of MNHN-S 604 is covered with a thick (1cm or
more) coating of burlap and plaster. From this sheath - which completely
surrounds the body and covers the skin - the snout, dorsal fin, flippers and
flukes protrude. None of the skin on the underside of the body nor the genital
or anal apertures is visible due to the circular encasement. The snout is
deformed, the mouth lumpily sewn together with a double thickness of twine. The
tips of the flippers are missing and the flukes are badly dried and twisted.
Only the dorsal fin retains some of its original shape, although also dried; it
is not pointed as in Philippi's drawing (Figs 1, 2 and 6).
Evidently the plaster layer covering the body was
originally painted black and white below, as described by Philippi, but,
according to museum attendants, over the years varnish was applied at intervals
to all mounted skins so that now the general color is a dark golden brown,
without even the white of the lower body being visible. The visible skin of the
head is black, without a suggestion of the white on the side of the face which
is typical of A. dioptrica. Below the chin there is, just barely visible in
front of the plaster, a slightly lighter area which might be a chin spot such
as in C. eutropia or C. commersonii. The only osteological materials left in
the skin as shown by the x-rays are the last 14 caudal vertebrae (Fig. 4) and
the remains of the broken flippers (Figs 3 and 7). A wooden stick runs
longitudinally within the plaster, skin and straw filling, and there is a metal
rod in the caudal region. Putrefaction, as well as the layers of covering and
the angle at which they had to be taken, prevented clear x-rays of the
flippers. The flippers themselves could not be removed because they were wired
together within the plaster sheath. The external shape of MNHN-S 604 is very
similar to the two specimens of Cephalorhynchus eutropia in the Santiago Museum
(shown to scale in Fig. 2).”
And so, Phocaena obtusata gains a new name: specimen MNHN-S
609.
The team used other preserved cetaceans in the museum as
their basis for comparison. P. obtusata was compared against the Commerson’s
Dolphin, Chilean Dolphin, Spectacled Porpoise and Burmeister’s Porpoise.
Commerson’s Dolphin and the Spectacled Porpoise were compared despite their
known ranges being quite far from Talcahuano. The paper then goes on to compare
the dorsal fin shape, pectoral flipper bones, flipper length, tail shape and
gape length.
In the Discussion section, the authors admit they originally
came to Santiago with the expectation of confirming that the specimen was a
Spectacled Porpoise, the most obvious conclusion based on the illustration.
However, after their actual analysis of the specimen, they ended up changing
their minds.
“We have no way of knowing if Philippi (1808-1904), one
of the great natural historians of South America of the last century, who was
aging and nearly blind in 1893, actually saw the specimen of Phocaena obtusata
without the plaster or if the entire description came from an assistant. To
what extent was the pigmentation pattern changed from the original during the
painting of the skin (the plaster sheathing)? […] The strange white marks on the side might, as
Alien (1925) suggested, have been caused by folding of the skin. However, on
folding a specimen, a dissimilar pattern would have been produced on the
opposite side; the other side has never been mentioned in the literature.”
One caveat that I find interesting is the authors’ assertion
on pages 273-274 that some species of cetaceans darken and discolour when the
animal dies and leaves the water, which I have seen plenty of photo evidence of.
However, “in A. dioptrica [the Spectacled Porpoise], the white pigment
remains startlingly white after a month or more on the beach.” They use
this an evidence against P. obtusata being a Spectacled Porpoise.
The team conclude, based on their investigation, that the specimen is most likely Cephalorhynchus
eutropia – “Although the striking similarity in color between P. obtusata
and A. dioptrica seems to have been the major feature in suggesting that they
were conspecific, in view of the treatment of the specimen (loss of epidermis,
burlap and plaster reinforcing, repainting) one must cast doubt on the accuracy
of the original figure and description, and color pattern must be disregarded
as a useful taxonomic character for this specimen.”
 |
| Left side view, cropped from Fig. 2 |